THE COMPANY www.ArrowGear.com FAX (630) 969-7640 Downers Grove, Illinois60515, USA Street2301 Curtiss maintaining long-lastingcustomer relations. takes ofsteady greatprideinitshistory growth anditsrecord for received vendor awards for both quality and on-time delivery. Arrow supplier to majorcompanies throughout theworld andhave consistently machining, heattreatmentandinspectionofourproducts. We areanapproved philosophy whileimplementing themostadvanced technology available for the To achieve theseobjectives, Arrow hasembracedthecontinuousimprovement on timeatacompetitive price. manufacturing process, eliminatingwaste, anddelivering aquality product Arrow’s goalisto insurecustomer primary satisfaction by improving the of thegearindustry. and bevel thatmeettherapidlychanginganddemandingrequirements From beginning,Arrow thevery hasprovided highprecisionspur, helical (630)969-0253 : continued to buildasolidreputationfor quality, andreliability. service Since itsinceptionin1947, Arrow GearCompany has HIGH PRECISIONGEARS SPECIALISTS IN SPECIALISTS Curvic of sizesandcapabilities. Please refer to thefollowing for thecomplete chart range we manufacture spiralbevel, hypoid, Zerol In additionto thestock listed gears inthiscatalog Gears Custom modify mostofourstock to gears your specifications. in ourcatalog,pleasecontactusfor assistance.We can gear requirements from theselectionofstock listed gears of 1to 1and2to 1. Shouldyou beunable to satisfyyour setsofgrounddifferent tooth spiralbevel inratios gears ratios of1to 1, 2to 1, 3to 1, 3to 2and4to 3and8 We stock 51 setsoflapped spiralbevel different in gears BEVEL GEARS SPIRAL STOCK Coniflex Spiral Bevel pr 6 . 81. GA9AM 13 AGMA AGMA 9 13.0 AGMA 13 AGMA 13 AGMA 13 3.0-48 AGMA 9 AGMA 9 AGMA 9 36" 8.0 36" 13.0 8.0 3.6-48 3.0-48 to*Some Configurations AGMA QualityNumber 10 (lapped). AGMA 13 3.6-48 Spline AGMA 9* 32" 36" Spur 32" 5.0 Internal Spline Internal 1.5 -48 Spur Helical 30" Coniflex Zerol Spiral Bevel ® yeo er ic imta aeUgon Ground Unground Face Diametral Pitch Type ofGear to customers’ printsandspecifications. ® bevel, aswell helicalandspurgears, as ® ee 2 . 840AM *AGMA 13 AGMA 9* 4.0 1.5 -48 22" Bevel ® ee 8 . 860AM *–– AGMA 9* 6.0 2.5-48 28" Bevel Maximum imtrPthWdhTohTooth Tooth Width Pitch Diameter AG IEADCAPABILITIES AND SIZE RANGE Zerol ® Bevel ⁴⁄₈ - ₈₀ ⁄₁₆₀ ® bevel, 30AM AGMA 13 AGMA 9 13.0 3 Coniflex ® Bevel EINCONSIDERATIONS DESIGN TOOTHGEARS STOCK GROUND NON-STOCK GEARS ARROW-STAN SPECIFICATIONS GEAR STOCK STANDARD SPECIFICATIONS RATING DATA AND OFGEARSANDSIZES TYPES TABLE OFCONTENTS Application Bearing Pattern Mountings Installation Bearing Loads ® ..16 ..19 ..15 Spur Curvic Helical ..4 ..5-9 ..14 ..10 ..18 ® ..3 ..12

TYPES OF GEARS RATING DATA T an appropriate overload factor. factor,In theabsenceofaservice select data andshouldbeusedwhen available. industries for applicationsfrom specific field factors haveService beendetermined by many T Calculations Arrow GearCompany. bythat allremachiningofboresbeperformed diameter inthetables.Itispreferred specified canbereboredtoHub typegears themaximum on eachpair. Seepage16. mating teeth andsetnumberareetched handspiral.Mountingdistance, backlash, left and 35°spiralanglearestandard. Allpinionsare carburized andhardened teeth. 20°pressureangle ismadeofalloyEach pairofgears steel with Number 9orground to AGMA QualityNumber 11. Quality Arrow stock arelappedto gears AGMA SPECIFICATIONS RATING DATA AND spiralbevelstock ... gears andgroundtooth Standard r w = T = HPx63025 w K T RPM SF V For is available. applications involving unusualconditions, ourEngineeringService Gear sizes in this manual must be selectedfromthecalculated allowableGear sizesinthis manualmust torque. P =Revolutions/minute RPM K T SF = Service Factor Service = SF Pitchlinevelocity = PLV T =Horsepower HP w r a v = Working torque 1 = 78 = Velocity Factor = = Catalog torque 0.262xRPMPitch = = Allowable torque (in. lb.) S =1) (SF (in. lb.) (in. lb.) Diameter 78 +PLV (Ground AGMA Q11) ( AGMA Q9 Lapped ) 4 nfr .012 1.75 2.00 2.25 1.25 1.50 1.75 Calculate thepinionworking torque (T 1) 1.00 1.25 1.50 Arrow Stock GearSelection Medium Shock Light Shock Uniform set hasacapacityof1.49 timesthatrequired. A 1.49 SFindicates thatthestock gear )Calculate thedynamicfactor K 5) Calculate thepitchlinevelocity (PLV). 4) Findtherated piniontorque inthecatalogthat 3) )Estimate therated piniontorque (T 2) hn T Then: Customer requires abevel 3:1reduction Example Calculate theallowable piniontorque (T 6) 7) Calculate the service factor. Calculate theservice 7) is approximately equal to theestimated torque. PLV =0.262xpinionpitchdiameter xRPM OREO RVNMACHINE DRIVEN ON SOURCE OE HRCE FLOAD OF CHARACTER POWER HP =38 speed=1800 SF =1 T First estimateFirst K PLV =0.262x2.51800 =1179 T From the3:1ratiosonpage7 wp ap rp v T T K T F=––– SF = T rp wp rp ap v = 2381 in.lb.(catalog value) = 78 = 63025x38 = 2381 = in.lb.x0.833=1983 in.lb. VRODFACTORS OVERLOAD 2x1330 in.lb.=2660 = = 2xT = T = 63025xHP 1330 = 78 T 78 +1179 T 983 rp wp ap RPM 78 +PLV x K 1800 nfr hc Shock Shock Uniform wp = 1.49 v p (6P45L15/6P15R45): = 1330 in.lb. = 0.833 eimHeavy Medium v . rp ). wp ap ). ). p Note: All dimensionsareininches. Torque Wt. ** Keyway M C’bore L Depth WebK Thick. Bolt J Circle C’bore H Dia. 2 2 BoreDia. G 2 Apex toBack F 2 2 E HubLength 2 D HubDia. 2 2 Bore C Dia. 2 Bore B Length 2 A MountDist. 2 2 Face Width 2 Diametral Pitch 2 1 Combination 1 1 1 Pinion 1 1 Gear Figure atNo. Part Holes Pitch Dia. Pitch Outside Dia. Dia. Pitch Outside Dia. Max. Bore Bore Length per pair, lbs. (lb. in.) No. Size +.0005 -.0000 +.001 -.000 iue1Fgr Figure3 Figure2 Figure 1 81 81 02 02 12 12 42 52 72 828 28 27 27 25 25 24 24 21 21 21 21 20 20 20 20 18 18 18 18 1 1 1 1 ¹₈ . . . . ⁵₃ ¹₁ ⁷₈ ¹¹₁₆ ¹⁵₃₂ . ⁄₆⁵₁  ₆¹₆¹³₁₆ ¹¹₁₆ ⁹₁₆ ¹₂ ⁵₁₆ ³⁄₁₆ 718457215 9629 2876 18 40 43 80 95 95307 69158 38404 24433 14209 11481 7765 5218 2991 1936 1251 712 405 138 37 81 0876654⁄ ¹₂32 3 3¹⁄₂ 4 4 4¹⁄₂ 5 6 6 7 8 10 12 18

0 1 000 1 061 1 000 1 061 18P18L18  ₆³₈⁷₁  ₆⁹₁ ₆³₄¹¹₁₆ ³₄ ⁹₁₆ ⁹₁₆ ⁹₁₆ ¹₂ ⁷₁₆ ³₈ ¹⁵₁₆ ⁷₁₆ ³₄ ¹₄ ⁵₈ ³₄ ³₈ 12 ⁷₈ x ** ₆³₁₆ ¹₁₆ 18P18R18 1 . 1 . . . . 40

0 2 2 500 571 2 2 500 571 12P18L18 ⁵₁₆ x ¹₄ ₆³₁₆ ¹₁₆ 12P18R18 . 1 1 . . . . 10P20L20 ⁷₈ 11 81 0 2 000 2 086 2 000 2 086 ¹₂ ⁵₈ x ₆¹₄ ¹₁₆

* 10P20R20 Cannot bereworked. 1 1 1 . . . .

¹⁵₁₆ 8P20L20 . x 0 3 500 3 590 3 500 3 590 ³₁₆ 11 ⁷₈ 52 25 ₂¹₄ ³₃₂ 8P20R20 1 1 2 2 . . . . .

x 7P21L21 ⁷₁₆ ¹₁₆ 0 3 000 3 100 3 000 3 100 ¹₈ ¹₈ ¹₄ 53 25 ₂¹₄ ³₃₂ 7P21R21 1 1 2 2 1 . . . . ¹¹₁₆

. 6P21L21 0 4 500 4 665 4 500 4 665 x ³₁₆ ⁹₁₆ ¹⁄₂ ¹₄ 55 75 ₂³₈ ³₃₂ 6P21R21 ** 2 Keyway Unchanged 1 1 2 1 . . . . ¹³₁₆ . 5 0 5 5 000 100 5 5 000 100 6P24L24 ⁵₁₆ 11 x ⁷₈ ³₄ ³₈ 710 37  ³₈ ¹₈ 6P24R24 1 3 2 3 1 . . . . 5P25L25 0 6 000 6 172 6 000 6 172 ³₁₆ ⁷₁₆ ⁷₁₆ x ¹₂ ¹₄ ⁵₈ .  ³₈ ¹₈ 516 5P25R25 1 1 2 3 1 4 . . . .

¹¹⁄₁₆ 45P27L27 0 7 000 7 201 7 000 7 201 ⁵₁₆ x ³₄ ⁵₈ ⁷₈ ¹₈ .  ¹₂ ¹₈ 524 45P27R27 1 2 1 4 . . . . ¹⁵⁄₁₆

x 4P28L28 0 8 000 8 238 8 000 8 238 4 2 ⁷⁄₈ ¹⁄₂ ⁵₈ ³₁₆ . 517 4P28R28 23 53 63 63 636 36 36 36 36 36 35 35 32 32 3333334444 ³₃ ⁷₃ ⁷₃ ¹⁄₂ ¹⁷₃₂ ¹⁷₃₂ ¹³₃₂ 4 5 4 1 . . . . 3 3 ₆⁵₁ ³₄ ⁵₁₆ ⁵₁₆ 21 21 12 10 12 12 12 4P32L32   ⁵₁ ⁄ ³⁄₄ ¹⁄₂ ¹⁵₁₆ ³₄ ³₄ ³₄ ⁵₈ ⁵₈ 0 10 000 10 202 10 000 10 202 * * * *** ⁵₈ ¹⁄₂ ³₈ ¹⁄₂ ³₄ ³₄ . 030 4P32R32 4 5 7 1

¹¹⁄₁₆ 35P35L35 . . . . ⁷⁄₁₆ 67 56 ¹₈ ⁷₈ 0 12 000 12 262 12 000 12 262 . 046 35P35R35 5 8 6 Figure 4 ⁹⁄₁₆ . . . . 3P36L36 22 ¹⁄₂ ⁵₈ ¹⁄₂ ¹⁄₂ 0 14 000 14 304 14 000 14 304 . 079 3P36R36 11 8 7 011 10 . . . . . 257P36L36 - 1 22 89 ³₄ ⁷₈ ¹⁄₂ 72 57 0 16 000 16 372 16 000 16 372 20 ¹₄ . 108 5 257P36R36 ¹⁄₂ 10 8 13 . . . . 225P36L36 ¹⁄₂ - . 3 000 430 000 430 ¹₈ ¹₄ ¹⁄₂ 25 20 ³₄ ¹⁄₂ . 0 225P36R36

STOCK 1 TO 1 RATIO Figure 5

Figure 7 Figure 9

Figure 6 Figure 8 STOCK 2 TO 1 RATIO

Part No. 10P32L16 10P16R32 9P34L17 9P17R34 8P36L18 8P18R36 7P38L19 7P19R38 6P40L20 6P20R40 5P40L20 5P20R40 4P40L20 4P20R40 35P42L21 35P21R42 320P46L23 320P23R46

Figure 5 6 5 6 5 7 5 7 6 7 6 7 6 8 6 8 6 9

Gear Outside Dia. 3.200 3.783 4.518 5.457 6.699 8.053 9.985 12.069 14.413 Pitch Dia. 3.200 3.778 4.500 5.429 6.667 8.000 10.000 12.000 14.362

Pinion Outside Dia. 1.764 2.087 2.457 2.965 3.620 4.404 5.436 6.517 7.760 Pitch Dia. 1.600 1.889 2.250 2.714 3.333 4.000 5.000 6.000 7.181

Combination 16 32 17 34 18 36 19 38 20 40 20 40 20 40 21 42 23 46

Diametral Pitch 10 9 8 7 6 5 4 3¹⁄₂ 3¹³₆₄

Face Width ⁹⁄₁₆ ⁵₈ ¹³⁄₁₆ 11³₁₆ 1⁷₁₆ 1³₄ 22³₈

A Mount Dist. 1⁷₈ 1¹¹₁₆ 2¹₄ 1¹⁵₁₆ 2⁹₁₆ 2¹₁₆ 32⁷₁₆ 3¹¹₁₆ 2¹⁵₁₆ 4⁷₁₆ 3¹₂ 5¹₂ 2⁹₁₆ 6⁹₁₆ 3¹₈ 7⁷₈ 4⁷₁₆

B Bore Length ³₄ 1 ⁷₈ 1¹₈ 11³₈ 1¹₈ 1⁵₈ 1³₈ 1⁷₈ 1⁵⁄₈ 2¹₄ 22¹₄ 2¹⁵₁₆

+.0005 C Bore Dia. -.0000 ⁵₈ ¹⁵₁₆ ³₄ 1¹₁₆ ⁷₈ 1⁵₁₆ 1¹₁₆ 1⁷₁₆ 1⁵⁄₁₆ 1¹¹⁄₁₆ 1⁹₁₆ 2¹⁄₁₆ 1¹³₁₆ 2¹⁄₁₆ 2⁵₈

D Hub Dia. 1¹₄ 1⁷₈ 1¹₂ 2¹₈ 1³₄ 2¹⁄₂ 2¹₈ 2⁷₈ 2³₄ 3¹₈ 2⁷₈ 3⁷₈ 3³⁄₄ 3⁷₈ 4¹₂

E Hub Length ³₁₆ ⁹₁₆ ¹₄ ⁹₁₆ ³₁₆ ⁹₁₆ ¹₈ ⁵⁄₈ ¹₄ ¹³₁₆ ¹₄ ¹⁵₁₆ ⁵₁₆ ⁵⁄₁₆ ¹₄

F Apex to Back 3³₁₆ 3⁷₈

+.001 G Bore Dia. -.000 55³₄ 9¹₄

H C’bore Dia. 6⁵₈ 8

J Bolt Circle 5³₄ 6⁷₈ 10¹₂

K Web Thick ⁵₈ ³⁄₄ ³₄

L C’bore Depth ⁵⁄₈ ³⁄₄

M Bore Length ⁵₁₆ ⁵₁₆

Holes Size ¹³₃₂ ¹⁷₃₂ ¹₂-20 a N No. 12 12 12

Keyway ³₁₆x¹₁₆ ¹₄x³₃₂ ³₁₆x¹₁₆ ¹₄x³₃₂ ³₁₆x¹₁₆ ³₈x¹₈ ¹₄x³⁄₃₂ ³₈x¹₈ ³₈x¹₈ ³₈x¹₈ ³₈x¹₈ ¹₂x³₁₆ ¹₂x³₁₆ ¹₂x³₁₆ ⁵₈x⁷⁄₃₂

**Max. Bore * 1³₁₆ ⁷₈ 1⁷₁₆ 11¹₂ 1³₁₆ 21⁵₈ 2¹₄ 1⁷⁄₈ 2³₄ 2¹₂ * 2⁷₈ * 39¹₄

Wt. each, lbs. .25 1.12 .50 1.75 .62 2.87 1.00 5.00 2.00 8.00 3.50 14.00 6.75 13.75 11.25 24.50 20 30

Torque Gear 820 1288 2352 3962 6674 11116 19996 31474 58348 (lb. in.)

Pinion 410 644 1176 1981 3337 5558 9998 15737 29174

Note: All dimensions are in inches. *Cannot be reworked. **Keyway Unchanged a - ³⁄₄ thread length

6 Figure 10 Figure 12

Figure 11 Figure 13 STOCK 3 TO 1 RATIO

Part No. 10P45L15 10P15R45 8P45L15 8P15R45 7P45L15 7P15R45 6P45L15 6P15R45 55P48L16 55P16R48 5P48L16 5P16R48 45P51L17 45P17R51 4P54L18 4P18R54 338P54L18 338P18R54 Figure 10 11 10 11 10 13 10 13 10 13 10 13 10 13 10 13 12 13

Gear Outside Dia. 4.492 5.627 6.438 7.514 8.725 9.625 11.364 13.523 16.015 Pitch Dia. 4.500 5.625 6.429 7.500 8.727 9.600 11.333 13.500 16.000

Pinion Outside Dia. 1.716 2.138 2.462 2.882 3.283 3.611 4.304 5.021 5.964 Pitch Dia. 1.500 1.875 2.143 2.500 2.909 3.200 3.778 4.500 5.333

Combination 15 45 15 45 15 45 15 45 16 48 16 48 17 51 18 54 18 54

Diametral Pitch 10 8 7 6 5¹⁄₂ 5 4¹⁄₂ 4 3³₈

Face Width ¹¹₁₆ ¹³₁₆ 11¹₈ 1¹₄ 1¹⁄₂ 1³₄ 22¹⁄₂

A Mount Dist. 2³₈ 1⁵₈ 2¹⁵₁₆ 23¹₂ 3¹⁵₁₆ 4⁹₁₆ 5¹₁₆ 5¹⁵₁₆ 7¹₁₆ 8³₈

B Bore Length ³₄ 1¹₈ ⁷₈ 1³₈ 1¹₄ 1³₁₆ 1³₈ 1⁵⁄₈ 1⁷₈ 2¹₈ 2⁵₈

+.0005 ⁵₈ 1¹₁₆ ³₄ 1⁵₁₆ ¹⁵₁₆ 1³₁₆ 1⁵⁄₁₆ 1⁷₁₆ 1¹¹₁₆ 1¹⁵⁄₁₆ 2³₈ C Bore Dia. -.0000

D Hub Dia. 1¹₄ 2¹₈ 1¹₂ 2³₈ 1⁷₈ 2¹₈ 2¹₂ 2⁷₈ 3¹₈ 3¹₂ 3¹₂

E Hub Length ¹₁₆ ⁷₁₆ ¹₁₆ ⁵₈ ³₁₆ ¹₈ ¹₈ ³₁₆ ¹₈ ¹₈ ¹₄

F Mount Dist. 1³₄ 1¹⁵₁₆ 2³₁₆ 2⁵₁₆ 2¹³₁₆ 3¹₈ 3³₄

+.001 3³₄ 4¹₂ 5¹₄ 5³₄ 78¹⁄₂ 10³₄ G Bore Dia. -.000

J Bolt Circle 4⁷₈ 5⁵⁄₈ 6⁵⁄₈ 7¹₈ 8³₈ 10 12

K Web Thick. ¹₂ ¹₂ ¹₂ ¹₂ ¹₂ ¹₂ ³₄

M Thread Length ⁷₁₆ ⁷₁₆ ¹₂ ¹₂ ³⁄₄ ³⁄₄ ⁷₈

Size ⁵₁₆-24 ⁵₁₆-24 ³₈-24 ³₈-24 ¹₂-20 ¹₂-20 ¹₂-20 Screw N No. 6 6 8 8 10 10 12 Req’d

Keyway ³₁₆x¹₁₆ ¹₄x³₃₂ ³₁₆x¹₁₆ ³₈x¹₈ ¹₄x³₃₂ ¹₄x³⁄₃₂ ³₈x¹₈ ³₈x¹₈ ³₈x¹₈ ¹₂x³₁₆ ⁵₈x⁷⁄₃₂

**Max. Bore * 1⁷₁₆ * 1¹₂ ********1⁷₈ * 2¹⁄₄ * 2³₈ 10³₄

Wt. each, lbs. .25 2.50 .50 4.00 .75 3.88 1.00 5.12 1.57.52.25 9.62 3.50 16.50 5.75 22.50 10 37.5

Torque Gear 1621 2993 4812 7143 10405 14752 23039 35446 67622 (lb. in.) Pinion 540 998 1604 2381 3468 4917 7680 11815 22541

Note: All dimensions are in inches. *Cannot be reworked. **Keyway Unchanged

7 Figure 14

Figure 16

Figure 18

Figure 15 Figure 17 STOCK 3 TO 2 RATIO

Part No. 8P24L16 8P16R24 7P24L16 7P16R24 6P24L16 6P16R24 6P30L20 6P20R30 5P30L20 5P20R30 5P36L24 5P24R36 45P39L26 45P26R39 4P42L28 4P28R42 35P45L30 35P30R45 290P45L30 290P30R45 Figure 14 15 14 15 14 15 15 16 15 16 15 16 15 17 17 17 17 17 15 18

Gear Outside Dia. 3.037 3.496 4.070 5.067 6.080 7.278 8.722 10.589 12.943 15.639 Pitch Dia. 3.000 3.429 4.000 5.000 6.000 7.200 8.667 10.500 12.857 15.500

Pinion Outside Dia. 2.169 2.506 2.930 3.578 4.290 5.094 6.065 7.355 8.960 10.908 Pitch Dia. 2.000 2.286 2.667 3.333 4.000 4.800 5.778 7.000 8.571 10.334

Combination 16 24 16 24 16 24 20 30 20 30 24 36 26 39 28 42 30 45 30 45

Diametral Pitch 8 7 6 6 5 5 4¹⁄₂ 4 3¹⁄₂ 2.903

Face Width ⁵₈ ¹¹⁄₁₆ ¹³⁄₁₆ 11¹₈ 1¹₄ 1³₈ 1³⁄₄ 22³₄

A Mount Dist. 1¹⁵₁₆ 1³₄ 2³₁₆ 22¹₂ 2¹₄ 32³₄ 3¹₂ 3¹₈ 4¹₄ 3⁹₁₆ 5³₁₆ 2⁷₈ 4¹¹₁₆ 3⁵⁄₁₆ 5¹³₁₆ 4¹₈ 8⁵₈ 6¹₈

B Bore Length ⁷₈ 111¹₈ 1¹₈ 1¹₄ 1¹₄ 1⁵⁄₈ 1³⁄₈ 1⁷₈ 1⁵⁄₈ 21⁷₈ 3¹₄

+.0005 C Bore Dia. -.0000 ³₄ ¹⁵₁₆ ¹⁵₁₆ 1¹₁₆ 1¹₁₆ 1³₁₆ 1³⁄₁₆ 1⁷₁₆ 1⁵₁₆ 1¹¹⁄₁₆ 1⁷₁₆ 1¹⁵⁄₁₆ 1¹¹⁄₁₆ 3³₈

D Hub Dia. 1¹₂ 1⁷₈ 1⁷₈ 2¹₈ 2¹₈ 2³₈ 2³₈ 2⁷₈ 2³₄ 3¹₈ 3¹₄ 3¹₂ 3⁵₈ 6

E Hub Length ¹₄ ⁷₁₆ ⁵₁₆ ⁷₁₆ ⁷₁₆ ⁹₁₆ ⁵₁₆ ¹¹₁₆ ⁵₁₆ ¹¹₁₆ ³⁄₈ ⁹₁₆ ⁹₁₆ ¹₂

F Apex to Back. 3¹₂ 5⁹₁₆ 46¹³₁₆ 4⁷₈

+.001 G Bore Dia. -.000 4¹⁄₄ 3¹₄ 5¹₂ 46¹₂ 10

H C’bore Dia. 64⁷₈ 7¹⁄₄ 68⁷₈

J Bolt Circle 5¹₈ 46³₈ 4⁷₈ 7³⁄₄ 11¹⁄₂

K Web Thick. ⁵₈ ⁷₈ ⁵⁄₈ ⁷₈ ³⁄₄ ⁵₈

L C’Bore Dia. ⁵⁄₈ ⁷₈ ¹¹₁₆ 1 ³⁄₄

M Bore Length ⁵₁₆ ⁵₁₆ ⁵₁₆ ⁵₁₆ ⁵₁₆

Size ¹³₃₂ ¹³₃₂ ¹³₃₂ ¹⁷₃₂ ¹⁷₃₂ ¹₂-20a Holes No. 12 12 12 12 12 12

Keyway ³₁₆x¹₁₆ ¹₄x³₃₂ ¹₄x³₃₂ ¹₄x³₃₂ ¹₄x³₃₂ ¹₄x³₃₂ ¹₄x³₃₂ ³₈x¹₈ ³₈x¹₈ ³₈x¹₈ ³₈x¹₈ ¹₂x³₁₆ ³₈x¹₈ ⁷₈x⁵₁₆

**Max. Bore * 1³₁₆ * 1⁹₁₆ * 1¹¹₁₆ 1¹¹₁₆ 1⁵⁄₈ 1⁷⁄₈ 2¹₄ 2¹₂ 2⁵⁄₈ 2³₄ *****4³⁄₈ 10

Wt. each, lbs. .38 1.00 .75 1.62 1.00 2.25 1.63 4.37 3.38 6.25 5.25 11.50 8.62 9.50 8.25 14.00 13.50 25.50 44.5 45

Gear 902 1295 2084 3850 5960 8658 13122 23370 37958 81825 Torque (lb. in.) Pinion 601 863 1389 2567 3973 5772 8748 15580 25305 54550

Note: All dimensions are in inches. *Cannot be reworked. **Keyway Unchanged a - ⁷⁄₈ thread length

8 Figure 19 Figure 20 Figure 21 STOCK 4 TO 3 RATIO

Part No. 8P28L21 8P21R28 7P28L21 7P21R28 6P32L24 6P24R32 5P32L24 5P24R32 4P32L24 4P24R32 35P36L27 35P27R36 3P36L27 3P27R36 Figure 19 19 19 19 19 20 19 20 19 21 21 21 21 21

Gear Outside Dia. 3.548 4.068 5.379 6.503 8.084 10.434 12.152 Pitch Dia. 3.500 4.000 5.333 6.400 8.000 10.286 12.000

Pinion Outside Dia. 2.789 3.186 4.219 5.053 6.288 8.117 9.424 Pitch Dia. 2.625 3.000 4.000 4.800 6.000 7.714 9.000

Combination 21 28 21 28 24 32 24 32 24 32 27 36 27 36

Diametral Pitch 8 7 6 5 4 3¹₂ 3

Face Width ¹¹⁄₁₆ ³₄ 11¹₄ 1¹₂ 1³₄ 2

A Mount Dist. 2¹₄ 2¹₈ 2⁵₈ 2⁷₁₆ 3³₈ 33¹⁵₁₆ 3⁷₁₆ 4¹⁵₁₆ 2⁷₈ 4³₄ 3³₄ 5⁷₁₆ 4⁷₁₆

B Bore Length 11¹₈ 1¹₈ 1¹₄ 1³₈ 1⁵₈ 1⁵₈ 1⁷₈ 2

+.0005 C Bore Dia. -.0000 ¹⁵₁₆ 1¹₁₆ 1¹₁₆ 1³₁₆ 1⁵₁₆ 1⁷₁₆ 1⁷₁₆ 1¹¹₁₆ 1¹³⁄₁₆

D Hub Dia. 1⁷₈ 2¹₈ 2¹₈ 2³₈ 2³₄ 2⁷₈ 3¹₄ 3¹₈ 3³₄

E Hub Length ³₈ ¹₂ ⁷₁₆ ⁹₁₆ ⁷₁₆ ⁹₁₆ ⁷₁₆ ⁹₁₆ ⁵₈

F Apex to Back. 3¹₂ 5¹₂ 4¹₂ 6¹₂ 5³₁₆

+.001 G Bore Dia. -.000 3³₄ 3¹₂ 546

H C’bore Dia. 5³₈ 5¹₈ 7¹₄ 68¹₈

J Bolt Circle 4¹₂ 4¹₄ 6¹₈ 4⁷₈ 7

K Web Thick. ⁵₈ ³₄ ³₄ ³₄ ³⁄₄

L C’bore Depth ⁵₈ ³₄ ³₄ 1¹₁₆ ³⁄₄

M Bore Length ⁵₁₆ ⁵₁₆ ⁵₁₆ ⁵₁₆ ⁵₁₆

Size ¹³₃₂ ¹³₃₂ ¹⁷₃₂ ¹⁷₃₂ ¹⁷₃₂ Holes No. 12 12 12 12 12

Keyway ¹₄x³₃₂ ¹₄x³₃₂ ¹₄x³₃₂ ¹₄x³₃₂ ³₈x¹₈ ³₈x¹₈ ³₈x¹₈ ³₈x¹₈ ¹₂x³₁₆

**Max. Bore 1³₁₆ 1⁷₁₆ 1⁹₁₆ 1¹¹₁₆ 222³₈ 2¹₈ 2³₄ *****

Wt. each, lbs. 1.00 1.50 1.25 2.38 3.00 5.25 5.12 8.28 9.38 8.12 10.25 15.75 16.00 24.00

Gear 1469 2025 4324 7435 13185 23356 34959 Torque (lb. in.) Pinion 1102 1519 3243 5576 9889 17517 26219

Note: All dimensions are in inches. *Cannot be reworked. **Keyway Unchanged

9 NON-STOCK RATIOS 6IC IC IMTRO GEAR OF DIAMETER PITCH 16 INCH GEAR OF DIAMETER PITCH INCH 14 All ring gears arecarburizedand All ringgears for other sizesandratios.) Department (Please contactourDesignEngineering of ratiosto cover awiderangeofapplications. Diameter ofthe They arelisted ingroups according to thePitch needed for themachiningprocesses. without unduedelays other thanthenormaltime We aretooled to produce thesegear combinations larger thanourgeneralselectionofstock gears. represent alineofSpiralBevel insizes Gears The combinationslisted inthefollowing pages Ratios (Non-Stock) Standard ARROW-STAN flatness androundness. and kept to theclosestpossiblelimits of on themostmoderntypeofequipment available, 13 14 14 16 15 16 14 Gear ...... 9 3 990 1 3 019 3 5 030 1 3 019 5 4 950 4 6 040 2 5 027 O.D. Pinion ...... IE PCFCTO EINCAPACITY DESIGN SPECIFICATION SIZES 1 43 14 517 9 43 14 993 2 44 14 220 2 63 16 720 9 64 16 599 7 45 14 973 3 66 16 837 g Gear e Pitch Dia. Pitch a r , withasuitableselection Pinion ...... 94 09 53 55 52 75 44 24 63 06 02 50 82 28 ai Combi- Ratio ® ...... 315 53 417 94 520 95 315 93 417 94 522 55 522 55 d i e nation q q u ------84 68 74 67 94 59 44 74 74 67 64 56 63 56 e n c h Diam. Pitch e ...... d 62 ⁵₈7 9 7¹₂ 2⁵₈ 2¹₄ 86 92 ³₄7 9 7¹₂ 2³₄ 2¹₄ 79 12 ¹₄7 9 7³₄ 3¹₄ 2¹₄ 21 32⁄ ⁷₈8 10 8¹₂ 2⁷₈ 2¹⁄₂ 63 92⁄ ¹₂10 8¹₂ 3 2¹⁄₂ 19 02 ¹₂7 9 7³₄ 3¹₂ 2¹₄ 00 02⁄ ¹₂10 8¹₂ 4 2¹⁄₂ 50 Width Face Gear Mounting Distance 10 the shaft becauseoffastening problems.the shaft higher than3:1areusuallydesignedintegral with to suityour machineorhousing.Pinionsofratios tooling available. canbedesigned Pinionmembers following tablesto take advantage ofextensive shouldbeorderedRing gears asshown inthe selecting gearsize. shown onpage4,must becalculated before in terms oftorque. Theallowable torque, as As inourstock gearline,capacitiesarerated Pinion (Min.) Arrow-Stan gearstyleusedonringgears. oeBolt Bore . . . . 5 10 250 5 10 250 5 10 250 5 10 250 . . . 5 12 750 5 12 750 5 12 750 Circle Dia...... 0 2¹⁄₂ 12 500 0 2¹⁄₂ 12 500 0 2¹⁄₂ 12 500 0 2¹⁄₂ 12 000 0 2¹⁄₂ 12 500 0 2¹⁄₂ 12 000 0 2¹⁄₂ 12 000 Bolts No. of Size Bolt ------086 37930 8367 20 093 38777 9839 20 011341840 14183 20 013051208 10380 20 019043145 16950 20 018054428 13810 20 027060556 23790 20 Lb. Inches Torque Pinion Lb. Inches Torque Gear 18 INCH PITCH DIAMETER OF GEAR SIZES SPECIFICATION DESIGN CAPACITY

Pitch Dia. Mounting Bore Bolt No. Bolt Torque Torque O.D. Ratio Combi- Diam. Face Distance nation Pitch Width Circle of Size Pinion Gear Gear Pinion Gear Pinion Dia. Bolts Lb. Inches Lb. Inches Gear Pinion (Min.) NON-STOCK RATIOS 18.196 18.196 18 18 1.00 39-39 2.17 3¹³₁₆ 10 10 10.750 13.375 12 ¹⁄₂-20 147373 147373 18.062 7.980 18 7.33 2.46 22-54 3.00 2³₄ 4³₄ 9¹₂ 12.500 14.125 12 ¹⁄₂-20 33827 83030 18.015 6.558 18 5.89 3.06 18-55 3.06 2³₄ 4 9¹₂ 12.500 14.125 12 ¹⁄₂-20 26219 80114 18.013 5.235 18 4.58 3.93 15-59 3.28 2³₄ 3¹₂ 9¹₄ 12.500 14.125 12 ¹⁄₂-20 19457 76531 18.034 4.235 18 3.65 4.93 14-69 3.83 2³₄ 3 9¹₄ 12.500 14.125 12 ¹⁄₂-20 14362 70784

20 INCH PITCH DIAMETER OF GEAR

20.218 20.218 20 20 1.00 39-39 1.95 4¹⁄₄ 11 11 12.500 14.625 12 ⁵⁄₈-18 196902 196902 20.086 8.795 20 8 2.520-50 2.50 3 5¹⁄₄ 10¹₂ 13.875 15.500 12 ⁵⁄₈-18 44196 110490 20.025 7.987 20 7.47 2.68 28-75 3.75 3 4³₄ 10¹₂ 13.875 15.500 12 ⁵⁄₈-18 36101 96702 20.026 7.466 20 6.93 2.88 26-75 3.75 3 4¹⁄₂ 10¹₂ 13.875 15.500 12 ⁵⁄₈-18 33291 96032 20.023 6.318 20 5.71 3.50 20-70 3.50 3 4 10¹₂ 13.875 15.500 12 ⁵⁄₈-18 27588 96558 20.015 5.641 20 5.07 3.95 19-75 3.75 3 3¹⁄₂ 10¹₂ 13.875 15.500 12 ⁵⁄₈-18 23520 92842 20.012 4.856 20 4.27 4.69 16-75 3.75 3 3¹⁄₄ 10¹₂ 13.875 15.500 12 ⁵⁄₈-18 19418 91022

22 INCH PITCH DIAMETER OF GEAR

22.175 22.175 22 22 1.039-39 1.77 4⁴³⁄₆₄ 12¹⁄₄ 12¹⁄₄ 13.875 16.000 12 ³⁄₄-16 255914 255914 22.079 8.069 22 7.33 3.00 21-63 2.86 3¹⁄₄ 4³₄ 11¹₂ 15.000 17.000 12 ³⁄₄-16 43419 130257 22.042 6.171 22 5.50 4.00 18-72 3.27 3¹⁄₄ 4 11¹₂ 15.000 17.000 12 ³⁄₄-16 30092 120372 22.012 5.633 22 4.99 4.41 17-75 3.41 3¹⁄₄ 3³⁄₄ 11¹₂ 15.000 17.000 12 ³⁄₄-16 26602 117362 22.010 5.057 22 4.40 5.00 15-75 3.41 3¹⁄₄ 3¹₂ 11¹₂ 15.000 17.000 12 ³⁄₄-16 23122 115610

24 INCH PITCH DIAMETER OF GEAR

24.243 24.243 24 24 1.00 42-42 1.75 5⁷⁄₆₄ 13¹⁄₄ 13¹⁄₄ 15.250 17.000 12 ³⁄₄-16 319016 319016 24.045 11.932 24 11.37 2.11 36-76 3.17 3¹⁄₄ 6³₄ 12¹₂ 17.500 19.500 12 ³⁄₄-16 69528 146781 24.041 9.667 24 9.00 2.67 27-72 3.00 3¹⁄₄ 5¹₂ 12¹₂ 17.500 19.500 12 ³⁄₄-16 54907 146419 24.048 8.586 24 7.73 3.11 19-59 2.46 3¹⁄₄ 5 12¹₂ 17.500 19.500 12 ³⁄₄-16 49704 154344 24.027 8.146 24 7.44 3.23 22-71 2.96 3¹⁄₄ 5 12¹₂ 17.500 19.500 12 ³⁄₄-16 44722 144330 24.012 7.585 24 6.86 3.50 20-70 2.92 3¹⁄₄ 4¹₂ 12¹₂ 17.500 19.500 12 ³⁄₄-16 41120 143920 23.985 6.141 24 5.44 4.41 17-75 3.13 3¹⁄₄ 4 12¹₂ 17.500 19.500 12 ³⁄₄-16 30977 136667

11 STOCK GROUND TOOTH 30% morewiththesamesizegearandpinion. transmit moretorque orhorsepower .upto A constantvelocity factor of1.00 meansyou factor devaluation unnecessary. (See page 4.) Ground tooth spiralbevel make gears velocity speeds exceeding feet 8000surface perminute. Ground tooth spiralbevel shouldbeusedfor gears Speeds inExcess of8,000SFPM discriminating gearbuyers. manufactured to thefollowing fulfill requirements for stockEvery ground tooth gearisdesignedand delivery.off-the-shelf 2:1 ratiosarecurrentlyavailable for time-saving, from stock. Themostpopularsizesof1:1and groundoffer tooth spiral bevel . gears Arrow Gear Company gearmanufacturer was to thefirst ...FROM STOCK GEARS BEVEL SPIRAL TOOTH GROUND Now...from thespiralbevel gearspecialists 12 power transmissionsystems. promises to many offer to benefits manufacturers of a ground tooth gearfrom scratch.Thisability in afractionofthetimewhen compared to producing fromgears awidevariety ofourstock anddoso gears, Arrow isableto produce ground tooth spiralbevel Bevel Gears Arrow's OnDemand Programfor GroundTooth Spiral capacity. minimize tooth spacingerrors andincreaseload toGrinding gearteeth correctsheattreatdistortion Capabilities Uniform Load-Carrying life. tooth areshot gears peenedfor additionalfatigue bevel for gears increasedcapacity. AllArrow ground Investigate thepossibleuseofground tooth spiral redesigningorgearbox sizeincreases. unnecessary present housingandmountings?Eliminate Have your gearcapacity requirements outgrown your High Capacity QualityNumber 11 orbetter. manufactured to AGMA All Arrow ground tooth spiralbevel are gears Higher Quality ground tooth spiralbevel gears. gear, printing pressesandmachinetools specify and manufacturers ofradarsystems, navigational To achieve near“zero” positioningerror, designers Eliminate Positioning Errors minimum of2.0to assurequiet operations. box. Tooth contactratiosaremaintainedto a high speedsto reducethedecibellevel ofyour gear Ground tooth spiralbevel areadesign“must”at gears Reduce GearNoise Note: Alldimensionsareininches. Wt. each, lbs. Wt. each, * Keyway Hub E Length Hub D Dia. C BoreDia. Bore B Length Mount A Dist. Face Width Diametral Pitch Combination Pinion Gear Torque (lb. in.) Figure No. Part Max. Bore Pitch Dia. Pitch Outside Dia. Dia. Pitch Outside Dia. Pinion Gear +.0005 -.0000 53 53 53 53 34 04 346 23 40 20 46 23 35 35 35 35 35 35 35 35 22 22 22 22 22 22 223 22 23 22 23 22 22 22 22 22 22 22 22 22 ¹₄ 3 3 3 3 8720 9979 3032 6686 3343 3922 1961 2300 1150 7496 7496 4929 4929 2809 2809 1807 1807 1 35GT35L35 1 ¹¹³⁄₁₆ 1 2 2 1 . . . . ₆⁹₁ ₆³₄¹₄⁹₁ ₆⁵₈⁹₃ ¹³₁₆ ⁹₃₂ ⁵₈ ³₁₆ ⁹₁₆ ¹₄ ³₄ ⁹₁₆ ⁹₁₆ ⁹₁₆ 08 10 ¹¹⁄₁₆ 1 TORATIO . 0 4 4 500 4 560 4 500 560 x ³₁₆ ⁹₁₆ ¹₄ ¹₂ 82 88 ₂³₈ ³₃₂

35GT35R35 Figure 22

2 40GT35L35 1 1 1 2 . . . . ¹³₁₆ . . ⁵₁₆ 0 5 5 000 5 075 5 000 075 x ³₈ ⁷₈ ³₄ 11 95 69 575 7 75  ³₈ ¹₈ *

Keyway Unchanged. 40GT35R35

50GT35L35 1 3 . . . . 2 3 1 0 6 6 000 6 110 6 000 110 . ⁷₁₆ ⁷₁₆ ³⁄₁₆ x ¹₂ ¹₄ ⁵₈ 58 25  ³₈ ¹₈

50GT35R35 13

1 60GT35L35 1 2 3 1 4 . . . . . ¹₁ ⁷⁄₈ ¹¹₁₆ . 0 2 2 000 4 144 4 000 144 3 10 833 ⁄₆¹³⁄₁₆ ⁵⁄₁₆ x ³₄ ⁵₈ ⁷₈ ¹₈ 25  ³₁₆ ¹₈

60GT35R35 2 1 . 22 62 11 11 ⁹₁₆ x ³₄ ¹₁₆ ³₈ 45GT46L23 . . . . 5 2 2 250 5 424 5 500 518 . 2 TO1RATIO 2 7 222 2 1 2 ¹₁₆ . ⁵⁄₁₆ ¹₂ ¹₂ ³₈ 71 87 x

 ¹₄ ¹₈ 45GT23R46 1 1 Figure 23 2 1 32 . x ³₁₆ ¹₁₆ 05 00 ¹₈ ¹⁄₈ ₂³₈ ³₃₂ 54GT40L20 . . . . . 1 3 3 714 6 935 6 429 446 6 6 368 11 1 2 1 ⁷₁₆ . ⁷₁₆ 21 x ⁷₈ ⁵⁄₈ 02 00

¹₈ ³₈ 54GT20R40 3 1 2 1 Figure 23 ¹¹⁄₁₆ . ⁵⁄₁₆ x ⁵⁄₈ ³₄ ³⁄₈ 08 00

¹₈ ³₈ 67GT46L23 . . . . 333 596 667 664 ³⁄₁₆ . 9 2 1 2 3 1 ¹⁵₁₆ ¹¹₁₆ x . ¹₄ ¹₈ ⁷⁄₈ 00 ¹₈ 67GT23R46

STOCK GROUND TOOTH Fig. 24 - Tangential Load Coefficients for Bearing Loads Coefficients for Spiral Bevel Gears: Σ=90° Shaft Angle/φ=20° Pressure Angle/ψ=35° Spiral Angle Load Face Concave Pinion Convex Gear Convex Pinion Concave Gear Ratio Ng/np Kxp=(Krg) Kxg=(Krp) Kxp=(Krg) Kxg=(Krp) 1.0 .809 -.181 -.181 .809 1.1 .817 -.142 -.219 .800 1.2 .822 -.107 -.253 .790 1.3 .826 -.075 -.284 .779 TANGENTIAL LOAD 1.4 .828 -.045 -.312 .769

BEARING LOADS 1.5 .829 -.019 -.336 .758 COEFFICIENTS FOR 1.6 .829 .006 -.358 .748 1.7 .829 .028 -.378 .738 BEARING LOADS 1.8 .828 .048 -.396 .728 1.9 .827 .067 -.413 .719 2.0 .825 .084 -.428 .711 The normal load on spiral tooth 2.5 .815 .152 -.485 .673 surfaces may be resolved into three (3) 3.0 .805 .200 -.524 .643 components: (Wt) tangential; (Wx) axial 3.5 .795 .235 -.551 .620 and (Wr) radial. 4.0 .787 .261 -.572 .601 4.5 .780 .282 -.587 .586 The tangential and radial components act in 5.0 .774 .298 -.599 .573 5.5 .768 .312 -.609 .562 a plane perpendicular to the gear axis and produce 6.0 .764 .323 -.618 .553 radial bearing loads. The axial component acts in a 6.5 .760 .333 -.625 .546 direction parallel to the axis producing thrust plus 7.0 .756 .341 -.630 .539 additional radial bearing loads. 7.5 .753 .348 -.635 .533 8.0 .750 .354 -.640 .528 The value of the axial and radial loads can be 8.5 .747 .359 -.643 .523 determined by multiplying the tangential load at 9.0 .745 .364 -.647 .519 mid face (Wtm) by the applicable coefficient (Kx) or 9.5 .743 .369 -.650 .515 10.0 .741 .372 -.653 .512 (Kr) for the concave or convex load face of either the pinion (p) or the gear (g). Wt = Tangential Load = 126050 HP HP = Horsepower d RPMp d = Pinion Pitch Diameter Wtm = Tangential Load Wt F = Face Width Fig. 24 is a table of coefficients (Kx) and (Kr) vs. at Mid-Face = mg = Ratio NG/NP F gear ratios for 35° spiral bevel gears with 90° 1- Kx = Axial Coefficient 2 []d 1+mg Kr = Radial Coefficient shaft angles and 20° pressure angle. Note the (+) RPMp = Pinion RPM values indicate forces tending to separate the two Wx = Axial Load Component = KxWtm rmp = pinion mean pitch radius Wr = Radial Load Component = Kr Wtm rmg = gear mean pitch radius gears and the (-) values indicate forces drawing the rmp = d - F rmg = rmp xmg gears into tighter mesh. 2 2 (1+mg)2

Fig. 25 - Normal Tooth Fig. 26 - Normal Backlash at Load Components Tightest Point of Mesh

Diametral Pitch Backlash Gear 1 .020" to .030" 2 .012" to .016" 3 .008" to .011" 4 .006" to .008" 6 .004" to .006" Pinion Ratio 10 .002" to .004" 20 and Finer .001" to .003" Fig. 27 - Axial Movement Per .001" Change in Backlash (Inches)

14 Fig. 28-Measuringorgaging asshown istherecommendedmethodfor locatingthepinion. Pinionshouldbeset memberofthebearing. on thestationary less than0.015" thickandshouldpreferably be location, andthebearingpreload,shouldnot be The shimsusedinadjustingthegearandpinion obtain thedesiredamountofbacklash. then beadjusted to meshwiththepinionto has beencorrectlypositioned,thegearshould to thepinion thebackface of thepinionhub.After flat ontheextreme smallendofthepinionteeth or to measurefrom to thecenter a ofthegearshaft made for thispurpose.Thegagemay bearranged ora“dummy”centered shaft onthegearshaft determined by measurementorby agage to 28), itscorrectmountingdistance(Seefigure axially. Itisadvisableto adjustthepinion first be madefor adjustingboth thegearandpinion Provisionat assemblyismostimportant. should The correctsettingoradjustmentofthepinion Mounting Distance INSTALLATION shaft for taking measurements. for taking shaft front ofthepinionuseadummy doesnotpass in If thegearshaft to mounting distance marked to give onpinion,andgearshouldbeadjusted correctbacklash. to mountingdistance Mounting distance 15 the specialconditionsofoperation. these limitswillrequire to modifications suit (See alsoFigure29).Inmany instances, this tableandapplyto thetightest pointofmesh. values etchedonARROW arederived gears from assembled, readyto run.Thebacklash backlash attightest pointofmeshfor gears Figure 26suggeststherecommendednormal movement thebacklash. ofeithermemberaffects Figure27break. shows theratioatwhichaxial oreven thetooth surfaces, and possiblyscuff are settoo tightthey willbe noisy, wear excessively, for safeBacklash isnecessary operation.Ifgears according to pitchandoperatingconditions. to have adefinite amountofbacklash,whichvaries Bevel shouldbemanufactured gears andassembled Backlash until readyto assemble. or sets,andthey shouldnot beseparated should always befastened together inpairs In storage orduringshipmentlappedgears of thegearset. ontheteethcan beobserved ofboth members should bearrangedsothatthecontactpattern for Aninspectionholeandcover periodiccheck. desirable both from anassemblystandpointand inmeshis A meansofinspectingthegears on frontofteeth. toflat locating pinionfromgearshaft Recommended gagingdimensionsfor of backlash. setting ittohave theproperamount thepinionismountedgearlocated by After proper thickness inassembly.proper thickness Spacing collarisgroundto Courtesy: TheGleasonWorksCourtesy:

INSTALLATION Matched angular contact or double row deep groove angular contact bearings are preferred. At the other end of the shaft a single row radial bearing may be used as shown in Figures 30 and 33.

MOUNTINGS When mounted on taper roller bearings, the indirect mounting should be used. That is, the MOUNTINGS large ends of the tapered rollers of each bearing should point outward as shown in Figures 31 and 32. The thrust load of the pinion is thus Rigid mountings should be provided to hold the absorbed by the bearing adjacent to the pinion displacements of the gears under operating loads and the reverse thrust load will be taken by the within recommended limits. Care should be taken opposite bearing. to see that keys are hardened, properly fitted and that couplings are not out of true or out of square. In either type of mounting both the gears and thrust bearings should be locked against thrust in For a number of years the Gleason Works has either direction. This applies to straight bevel and been making deflection tests on gears and their Zerol® bevel gears as well as to spiral bevel and mountings and observing these same units in hypoid gears. It is accepted practice to preload service. From these tests the recommended the bearings to remove initial freedom in the allowable deflections under maximum service mounting. The amount of preload depends upon load have been determined for gears from the mounting load and operating speed, and 6" to 15" diameter: should be established by the bearing 1. The pinion should not lift or depress more manufacturer. than 0.003". 2. The pinion should not yield axially more than 0.003" in either direction. 3. The gear should not lift or depress more than .003". 4. The gear should not yield axially more than 0.003" in either direction on miters or near miters or more than 0.010" away from the pinion on higher ratios.

Spiral bevel gears should in general be mounted on anti-friction bearings in an oil-tight case. While designs may be made for a given set of conditions using plain bearings for radial and thrust loads, the problem of maintaining the gears in satisfactory alignment is usually more easily accomplished with ball or roller bearings.

There are two general types of pinion mountings, namely the straddle and the overhung mounting. Either ball or roller bearings may be used in both types of mountings.

Ball bearings with extremely small axial yield should be used behind each pinion to take care of combined thrust and radial loads. Set Number Mating Teeth Mounting Backlash Distance Fig. 29 - All Arrow Stock Gears are marked with the above assembly information.

16 Manufacturers Association forportionsofthetextandillustrativematerialusedin thissection. Acknowledgment isgratefully extendedtoGleasonWorks, Rochester, New York andtothe American Gear Fig. 32 - Straddle pinion mounting for short shafts shafts Fig. 32-Straddle pinionmountingfor short Fig. 30-Typical mountingfor bothmembers straddle bearings. Gearmountedinoil-tightcase. showing andradial useofcombinedthrust of aspiralbevel pair 17 Fig. 33 - Arrangement recommended for long shafts Fig. 33-Arrangementrecommendedfor longshafts Fig. 31 -Thismountingisanotherform ofbearing position ofgearmountedinoil-tightcase. to prevent affecting temperaturechanges arrangement for overhung .

MOUNTINGS BEARING PATTERN (Note: Pinion member is left hand in all illustrations.) all in hand left is member Pinion (Note: the lengthoftooth, thelocationslightly Gears accepted standards. beenfollowed, have bearing patt Using asuitable BEARING PATTERN To decreasemounting distance correct: PROFILE ERROR To angle decreaseshaft correct: SHAFT ANGLEERROR To move correct: piniondown CROSS CONTACT HIGH TOECONTACT are cutwithacontactpatternabouthalf CONVEX SIDE HEEL CONTACT ERROR CONVEX SIDE ern. Ifthemar TOE CONTACT CONVEX SIDE marking compound, checkthe compound, marking the pattern willconform to ERROR HIGH HEELCONTACT kings onthegearset CONCAVE SIDE ERROR CONCAVE SIDE CONCAVE SIDE TOE CONTACT TOE CONTACT TOE CONTACT CONCAVE SIDE TOE CONTACT CONVEX SIDE HEEL CONTACT CONCAVE SIDE TOE CONTACT CONVEX SIDE CONTACT LOW TOE CONCAVE SIDE CONTACT LOW HEEL CONVEX SIDE 18 To increasemounting distance correct: PROFILE ERROR To angle increaseshaft correct: SHAFT ANGLEERROR To move correct: pinionup CROSS CONTACT be concentrat Under no the tooth, andwillthusbecomemorecentral. pattern will shift pattern willshift toe endofthetoothe favoring LOW HEELCONTACT CONVEX SIDE HEEL CONTACT TOE CONTACT CONVEX SIDE CONVEX SIDE ERROR All Illustrations: Courtesy ofTheGleasonWorks. Courtesy All Illustrations: circumstances mustthepattern ed ontheendsofteeth. Desirable BearingPattern ERROR some ERROR LOW TOECONTACT CONCAVE SIDE HEEL CONTACT CONCAVE SIDE what toward HEEL CONTACT CONCAVE SIDE HEEL CONTACT CONCAVE SIDE HEEL CONTACT CONVEX SIDE th. U HEEL CONTACT CONVEX SIDE TOE CONTACT CONCAVE SIDE theheelof nder loadthe CONTACT HIGH TOE CONVEX SIDE CONTACT HIGH HEEL CONCAVE SIDE 3. 2. 1. Email ______Telephone City Street 7. 6. ______No. Part Type: 5. 4. Name Company______Please complete theform, reproduce it,andsenditalongwithasketch oftheapplication. Provide thefollowing datainlinewithyour requirements. specific GEARS ANDGEARDRIVES ENGINEERING INFORMATION APPLICATION 8. ______IT ISESSENTIALTHAT YOU SENDANASSEMBLY PRINTORSKETCH SHOWING AI:Approx RATIO: APPLICATION: ieLmttos______Size Limitations @RPM Uniform OFLOAD: TYPE RATING: TT N NSA EINPRMTR ______STATE ANYUNUSUAL DESIGNPARAMETERS QUANTITY: Prototype ______e. size&mountingconstraints tod. methodofconnectingthegearset power source c. provisions for adjustingbacklash b. meansofabsorbingaxial&radialgearloads a. drivingmemberanddirectionofrotation ______te aeil______Material ______AGMA Class ______Angle Shaft ______SpiralAngle Other Helical Spur ______PrAngle Noofteeth Hypoid Pitch______Straight Bevel Zerol Bevel Spiral Bevel ______Fax Fax ______Normal Input HP Maximum Input HP Reversing: Yes ______© 2008,Arrow GearCompany Prime Mover ______GEAR D PHONE (630)969-7640 : ______A T A ______ No _____ Pr ______ Med. Shock Exact 2301 Curtiss Street2301 Curtiss FAX @RPM ______R ______(630)969-0253 : 19 Title State oduction ______Torque ______Torque ______Torque ______Type ofLub. Overhung load hrs ______Life B10 Duty Cycle Requirements: Shaft ______Other Angle Parallel Hi Shock ______ ______Downers Grove, Illinois60515 ______www.ArrowGear.com Zip ______ ______educer ENCL OSED DRIVES Intersect Country Increaser ______ Skew

APPLICATION DATA 2301 Curtiss Street Downers Grove, IL 60515, USA (630) 969-7640 Fax: (630) 969-0253 www.ArrowGear.com

© 2008, Arrow Gear Company

2008 V1