Standard Spindles Precision Grinding Spindles Cartridge Spindles Precision Boring Heads
Easy to mount and replace cartridge type spindles. A full line-up with perfect designs. Standard Spindles
The technology of the machine tool is ever-progressing and the requirements of standard spindles are increasing steadily. NSK takes account of such technical requirements and is endeavoring to make standard spindles that are highly precise, highly rigid and highly functional. We are confident that NSK standard spindles will satisfy your needs.
•Cartridge system, easy to mount and exchange. •Strict quality control to ensure high precision and high rigidity. •All products in this catalog are available for prompt delivery.
PRECISION GRINDING SPINDLES CARTRIDGE SPINDLES PRECISION BORING HEADS Features Features Features (1) Preload is always constant, as two sets of tandem duplex (1) Cartridge design allows for easy mounting to brackets and Head replacement is easy, as the center height, mounting bolt bearings are used with constant pressure preload. easy replacement. hole spacing, distance from the front mounting bolt holes to the (2) The most productive spindle, producing good surface finish (2) Convenient for ATC, as the cartridge spindle for machining flange end face, and other dimensions, are all standardized. with high-precision, high-performance grinding. centers incorporates the entire set of spindle bore components. (3) Highly precise and rigid main spindles for NC lathes are also Contents Contents available. Precision boring head types and features────────13, 14 Precision grinding spindle types, features and Dimension table for JSH＊＊＊＊NW type─ ───────13, 14 selection criteria─ ────────────────── 3 Contents Dimension table for SH＊＊＊＊NW type─────────13, 14 SA type (quill type) dimension table ─ ─────────── 4 Types of cartridge spindles─ ────────────── 7, 8 SC type (external and surface) dimension table ─ ───── 4, 5 Specifications and dimension table of cartridge spindles SF type (surface) dimension table─ ──────────── 5 for machining centers ─────────────── 9, 10 Exchangeable grinding wheel arbor Specifications and dimension table of Other Spindles─ ─────────────────── 15
NSK Precision Grinding Spindles NSK Precision Grinding Spindles
•Grease lubrication SA Type Internal Grinding Spindle •Direction of rotation: Clockwise (viewed from pulley side) (Exchangeable arbor-type grinding wheel) •Runout accuracy: 3 μm or less (for spindle outside diameter: 70 mm or less) 5 μm or less (for spindle outside diameter: more than 70 mm)
6 A h F D
Taper 1/20 G
1 E B C
Unit: mm Max. rot. Spindle reference No. −1 A speed (min ) B C D E F G
SA600 30 000 60 220 48 28 8 11.113 3
SA700 20 000 70 250 69 42 9 17.463 3
SA800 16 000 80 280 73 56 9 20.638 3
SA900 13 500 90 320 84 63 9 23.813 4
•Grease lubrication SC Type External and Surface •Direction of rotation: Clockwise (viewed from pulley side) •Runout accuracy: 3 μm or less (for spindle outside diameter: 70 mm or less) Grinding Spindle 5 μm or less (for spindle outside diameter: more than 70 mm) (Medium-size grinding wheel) K
6 A h F L D M
Types and Features Selection Criteria Quill type spindle for various exchangeable wheel Type of SA Type Type Suitable applications F G N arbors. Can be used for a wide range of applications. grinding H B C SC Type Two types available - flat-belt driven spindles for medium- Internal Exchangeable grinding wheel arbor type. SA size grinding wheels, and V-belt driven spindles for large- grinding Use when grinding various types of holes. size grinding wheels. Two types - one for use with medium-size External Unit: mm SF Type Flat-belt driven spindle for cup-type grinding wheels. SC grinding wheels, one for use with large-size grinding Incorporates precision bearings with high load capacity. grinding wheels. Max. rot. Spindle reference No. −1 speed (min ) A B C D E F G H K L M N ■ Runout accuracy: Less than 3 μm for all types with outside Use when grinding surfaces with the outer SC SC5500 6 400 50 180 47 56 65 − 90 9.5 − 13 15.5 41 22.23 50 M14 × 1.5 2 cylinder diameter of less than 70 mm. Surface circumference of the grinding wheel. Less than 5 μm for all types with outside cylinder diameter of grinding Use when grinding surfaces with the end face SC6500 5 000 60 220 63 70 75 − 115 13 − 19 17 51 31.75 70 M20 × 1.5 3 70 mm or greater. (SA Type: Base of test bar. SC and SF Types: SF of a cup-type or dish-type grinding wheel. End of spindle shaft.) SC7500 3 800 70 250 73 90 100 − 150 16 − 25 24 70 38.1 90 M26 × 1.5 3 Note: Please select the size suited to the mounting conditions. ■ Spindles for counterclockwise rotation can be manufactured for SC8500 3 200 80 280 83 110 125 − 180 19 − 32 24 80 63.5 115 M30 × 1.5 3 Please select the spindle suited to the grinding conditions. special orders.
NSK Precision Grinding Spindles NSK Precision Grinding Spindles
•Grease lubrication SC Type External and Surface •Direction of rotation: Clockwise (viewed from pulley side) Exchangeable Grinding Wheel Arbor Grinding Spindle •Runout accuracy: 3 μm or less (for spindle outside diameter: 70 mm or less) Taper(Reference 1/20 dimensions) Z (Large-size grinding wheel) 5 μm or less (for spindle outside diameter: more than 70 mm) •Whetstone mount of SC5501 and SC6501 is the same as SC type (for medium-size whetstone).
JIS B1854A type d P D N H M
Note: If an exchangeable spindle for SA Pitch type is required, please manufacture K one according to this figure.
6 h A Taper 1/20 F L D M G Z
C EF d P D N H M Pitch L B A
FG N P
H B C G
C EF Unit: mm Max. rot. Spindle reference No. −1 A B C D E F G H K L M N P speed (min ) L B A SC5501 5 700 50 180 47 60 65 − 100 9.5 − 13 15.5 41 22.23 50 M14 × 1.5 2 10
SC6501 4 600 60 220 48 80 75 − 125 13 − 19 17 51 31.75 70 M20 × 1.5 3 10 Unit: mm SC7501 3 200 70 250 69 110 150 − 180 16 − 19 24 70 76.2 130 M26 × 1.5 3 10.5 Spindle M SC8501 2 800 80 280 73 130 150 − 205 19 − 25 24 80 76.2 130 M30 × 1.5 3 10.5 A B C D d E F G H P Z Recommended reference No. dimensions SA600 66 6 50 14 11.113 3 13 3 8 1.25 12 5, 6, 8, 10, 12 •Grease lubrication SF Type Surface Grinding Spindle 5, 6, 8, 10, •Direction of rotation: Clockwise (viewed from pulley side) SA700 94 8 71 22 17.463 3 20 4 12 1.75 19 •Runout accuracy: 3 μm or less (for spindle outside diameter: 70 mm or less) 12, 14, 16, 18 5 μm or less (for spindle outside diameter: more than 70 mm) 6, 8, 10, 12, SA800 105 9 78 25 20.638 4 23 4 14 2 21 Face-to-face dimension P 14, 16, 18, 21 10, 12, 14, 16, SA900 118.5 11.5 86.5 30 23.813 6 26 4.5 16 2 26 K 18, 21, 24
6 h A F L D M
Unit: mm Note: The maximum length L, with Neck outside diameter respect to the exchangeable 5 6 8 10 12 14 16 18 21 24 grinding wheel arbor neck with M outer diameter M, can be H N Screw thread diameter determined using the table on 3 3 3 4 6 6 6 8 8 8 N FG B C the right. Maximum length 30 35 45 50 60 68 72 81 97 108 L Unit: mm Max. rot. E Spindle reference No. −1 Speed of SC and SF Type speed (min ) A B C D max. F G H K L M N P When motor speed is 3 000 min−1, motor pulley diameter is φ120 and the maximum dimension of the grinding wheel (E) is used, the SF5500 7 600 50 180 47 48 75 38 13 32 25.4 50 ─ 7 12 grinding speed is approximately 1 800 m/min. If operating conditions deviate from these conditions, please determine the appropriate pulley diameter to obtain a grinding speed of 1 800 m/min with the grinding wheel diameter used. SF6500 6 400 60 220 47 56 90 45 15 35 31.75 60 M22 × 1.5 7 12
SF7500 5 700 70 250 64 63 100 50 15 39 38.1 70 ─ 9 19
SF8500 5 000 80 280 64 70 115 50 15 39 38.1 80 ─ 9 23
NSK Cartridge Spindles NSK Cartridge Spindles
Types and Features
For Machining Centers High-rigidity G series (G-40V, G-50V) ■ High-rigidity G series (G-40V、 G-45V, G-50V) ◦V-types are used for vertical installation, while H-types with High radial rigidity is achieved with a double-row cylindrical drain holes are available for horizontal installation. roller bearing incorporated in the fixed side. The application of a high-speed angular contact ball bearing with a contact angle of ◦Built-in tool clamps facilitate easier operation (suitable 30° for thrust load provides axial rigidity with high-speed for ATC). operation. The double-row cylindrical roller bearing integrated in the free side provides a large load capacity and ensures smooth ◦Use MAS・BT as the tool holder. axial movement against shaft elongation caused by rising temperatures. ◦Use MAS・I as the pull stud.
◦The outer casing is provided with a coolant groove. ■ High-speed H series (H-30V, H-40V) A high-speed angular contact ball bearing with a contact angle ◦When cooling, adjust the coolant oil temperature to room of 15° is integrated in the fixed side. temperature. (Flow is approximately 5 L/min) Although mainly used for high-speed operation, these bearings are also applicable to normal cutting at medium or low speeds ◦Insert an O ring between the unit and bracket before cooling since their quadruple configuration maintains rigidity. the outer casing. The free side incorporates a double-row cylindrical roller bearing, as in the high-rigidity series.
◦General purpose tool holders (BT #40, pull stud MAS·I) can ■ Economy type (E-40) be used. As a standard stock product, delivery is swift. Spindle functions required for cutting work are integrated in a compact body ◦The air seal cover type and V pulley are optionally available. available at an unprecedented price. ＊The air seal cover itself is not sold separately. The V pulley is The high level of precision is suitable for a wide variety of fields, an optional item sold separately; contact NSK for pre- including automobiles, electrical appliances, machine tools, installing a V pulley in the unit. optical instruments, and metals. Furthermore, the cartridge bracket can be easily attached and ◦Contact NSK for special products with custom-tailored detached. Tool clamps are built into the shaft, facilitating easy specifications, such as high-speed rotating types and shaft- tool replacement. end modified types.
Economy type (E-40) For NC Lathes
■ High-rigidity L series (L-5, L-6) ◦The shape of the shaft end on the mounting part conforms to Same bearing arrangement as the G series for machining centers. JIS B6190 A 2. High radial rigidity is achieved with a double-row cylindrical roller bearing incorporated in the fixed side. A high-speed angular ◦V-pulley, synchronized pulley, parallel key, and drive button contact ball bearing with a contact angle of 30° for thrust load should be furnished by the customer. provides axial rigidity along with high-speed operation. The double-row cylindrical roller bearing integrated in the free side ◦Runout accuracy: All types in this series feature mounting provides a large load capacity and ensures smooth radial and axial runouts of 2 μm or less. axial movement against shaft elongation caused by rising temperatures. ◦All types in this series are used for horizontal installation and provided with drain holes.
High-rigidity L series (L-5, L-6)
NSK Cartridge Spindles NSK Cartridge Spindles
For Machining Centers G series (V type) cross section Cross section of H series (V type)
A (Radial rigidity point) A (Radial rigidity point) ) ) 6 6 1 1 2 1 5 Taper 7/24 4 h ) h ( ) P ( d d d d D M 6 6 1 D 1
2 1 Taper 7/24 4 5 d M h (BT#40) h P ( d d d d ( D M
(BT#40) d M D 3 M 3 H type for 2
M horizontal installation H type for M horizontal installation 2 l11 has a drain hole. PA C3 M l11 has a drain hole. PA C3 l10 l5 l6 l7 L8 C2 l10 l5 l6 l7 l8 C2 l9 l1 l2 l3 L4 C1 l9 l1 l2 l3 l4 C1 l l
M4 High-Rigidity G Series 5
Note 2 M −1 Note 1 Rigidity (N/μm) Specification Max. rot. speed (min ) Runout accuracy (μm) max. Average National (reference) Allowable Spindle
power Pulley Tool clamp Tool unclamp Tool clamp 3 2 3
static axial weight d taper Base of test End of 300 consumption groove Radial force (N) force (N) type D D Type Rev. speed m max Taper Axial load (N) (approx.) (kg) d n bar test bar (kW) (point A) G-40V (H) 40 8 000 62 × 104 5.5 5MS-7 275 245 25 500 40 6 870 8 830 Ball chuck 2 3 8 G-50V (H) 50 4 000 58 × 104 11 7MS-6 520 500 80 400 140 14 700 26 500 Collet chuck Side view (common in G and H series)
Unit: mm
Dimensions Pulley Shaft dia. NT Large d2 d3 d4 d5 C1 C2 C3 D D1 D2 D3 M M1 M2 M3 M4 M5 l l1 l2 l3 l4 l5 l6 l7 l8 l9 l10 l11 d d1 Type P PA
G-40V (H) 65 44.5 76 60 55 90 44 40 35.4 76 10.5 140 140 162 185 50 M50 × 1.5 11 17.5 15.9 14 480 124 24 184 138 27 57 31 23 10 11 8
G-50V (H) 110 69.85 130 98 100 137 48 43 34 130 12.5 220 220 250 280 95 M95 × 2.0 16 23 25.4 26 700 152 35 270 225 33 75 87 30 18 15.2 12.5
Note 1: Pulley groove design uses Bando Chemical Industries, Ltd.’s “Banflescrum” specifications. High-Speed H Series
Note 2 Specification −1 Average Note 1 Rigidity (N/μm) 5MS-7 Max. rot. speed (min ) Runout accuracy (μm) max. Allowable Spindle National power Pulley (reference) Tool clamp Tool unclamp Tool clamp static axial weight Number of grooves taper Base of test End of 300 consumption groove Radial force (N) force (N) type Type Rev. speed m max Taper Axial load (N) (approx.) (kg) Belt type d n bar test bar (kW) (point A) H-30V (H) 30 12 000 78 × 104 3.75 5MS-4 128 98 9 800 28 3 920 5 100 Ball chuck Note 2: Tool clamp uses ball chuck for National Taper #40 2 3 8 and below, collet chuck for National Taper above H-40V (H) 40 10 000 82 × 104 5.5 5MS-7 167 137 12 700 40 6 870 8 830 Ball chuck #40 (Collet made by BERG Inc.)
Unit: mm
Dimensions Pulley Shaft dia. NT Large d2 d3 d4 d5 C1 C2 C3 D D1 D2 D3 M M1 M2 M3 M4 M5 l l1 l2 l3 l4 l5 l6 l7 l8 l9 l10 l11 d d1 Type P PA
H-30V (H) 50 31.75 57 44 45 74 34.5 32.5 27.5 64 11.5 120 120 140 160 43 M42 × 1.5 9 14 15.9 11 390 111 20 146 106 25 41 22 18 7 8.6 8
H-40V (H) 65 44.45 76 60 55 90 44 40 35.4 76 10.5 140 140 162 185 50 M50 × 1.5 11 17.5 15.9 14 480 124 24 184 138 27 57 31 23 10 11 8
10 NSK Cartridge Spindles NSK Cartridge Spindles
For NC Lathes Economy type cross section Cross section of L series
Pulley installation location (parallel key: two places) Tool holder 7013CTYDBB N1011 (Key groove size K) BT＃40 2-8 × 7 × 35L A (Radial rigidity point)
l11
) L10 L9 ) ) ) 2 78 2 7 1 3 h7 130 H7 ( d D ( d d d d M 44.45 4 8 H7 H7 φ ( ( d d φ 6 5 φ d d Taper 1/4 130h6 φ 0 A Type −0.020 50
φ M16 × 2.0 M50 × 1.5 Drain hole: three holes ＊Drain hole 5 Pull stud Cleaning air-hole 30
l8 1 M (Set screw) MAS I type φ5 M 25 20 80 20 l7 l6 Unclamped 9 800 N l5 l4 l3 l2 l1 8 60 220 100 25 Clamp 6 860 N l 380 27 No holder
6-M8 Bolt 11-N 3 D 0 2 1 D D 17 φ PCD150
0 15.9−0.05
Unit: mm Runout accuracy (mm) Bearing used Specifications Average Clamped Unclamped Shaft-end specifi- Rigidity (N/μm) (reference) Allowable Spindle Rotation Direction of Mass Max. rot. power Orientation Lubrication At a point force force cation −1 static axial weight speed rotation (kg) At base of Driving speed (min ) consumption 300 mm away Taper side (N) (N) (JIS) load (N) (approx.) (kg) test bar from base side Type Axial Radial (point A) (kW) Horizontal, Maximum Both 0.003 0.010 L-5 A 2-5 5 000 353 333 41 200 60 5.5 vertical −1 Grease 25 7013CTYDBB N1011 6 860 9 800 (driving end up) 5 000 min directions or less or less L-6 A 2-6 4 000 451 539 61 800 80 7.5 Note: For horizontal installation, remove the set screw to open the drain hole.
Unit: mm Dimensions D D1 D2 D3 M M1 M2 N d d1 d2 d3 d4 d5 Type
L-5 170 220 195 104.8 20 14 M65 × 1.5 M10, 22 depth 82.563 80 70 133 65 55
L-6 200 260 235 133.4 20 14 M80 × 1.5 M12, 25 depth 106.375 100 90 165 80 70
Unit: mm Dimensions d6 d7 d8 l l1 l2 l3 l4 l5 l6 l7 l8 l9 l10 l11 K Type Unit: mm L-5 50 42 45 503 13 48 26 283 133 13 100 34 25 55 35 12 × 5 × 50 l
L-6 60 54 60 574 14 55 30 315 160 13 120 35 25 60 35 12 × 5 × 53 l
11 12 NSK Precision Boring Spindles NSK Precision Boring Spindles
Steel plate JSH (NW) Type Note (1) J Pilot bush
Rubber cover Q K F X E V D N H G L M 0.02 0 Z ＋ 101.6 Boring bar 30 Drain hole
P Y U S R S C B T±0.01 T±0.01 Steel plate cover 83 254 76 A W±0.02 Types and Features SH3000NW (SH3060NW, SH3080NW) Type [Most suited to low speed, heavy cutting] 20 FE 1 Dimensions This type uses two tapered roller bearings and one angular Boring head A B C D E F designation contact ball bearing. The preload of the tapered roller bearings Boring bar 20
is adjusted by rotating the round nut mounted on the rear of the 34 JSH1045NW, SH1045NW 20 36 50 26 20 10
spindle. The angular contact ball bearing is spring preloaded, 14 JSH1060NW, SH3060NW, thus the main spindle shaft is supported at 3 points. 25 45 50 31 20 10 SH1060NW Steel plate cover 35 5 Groove form when attached bolt 0.00 0 ＋ D B C JSH 1000NW (JSH1045NW, JSH1060NW, JSH1080NW) Type and nut specifications are A JSH1080NW, SH3080NW, φ φ φ
φ 30 50 85 36 25 10 [Most suited to light-load, high-speed cutting] applied (common in JSH and SH). SH1080NW This type uses two ultra-precise angular contact ball bearings on each end. The preload is adjusted by inserting spacers between the bearings. Note (1) SH (NW) Type V J Pilot bush Boring bar ■ Runout accuracy: The radial and axial runout for the boring bar mounting part is less than 3 μm for all types. ■ All boring heads have waterproof labyrinth mechanisms, but Cover we recommend using the protective cover as shown in the L F E P K B figures on the right. G 2
0 0.0
■ ＋ Accessories: Bolts, nuts and a wrench for installation are included 6 X
with all products. 101. 30 Drain hole
Boring bar 10 Z Y D S R S MQ 83 254 76 T±0.01 T±0.01 A W±0.02
Unit: mm Dimensions Front bearing Max. rot. Boring head shaft −1 A B C D E F G H J K L M N P Q R S T U V W X Y Z Boring head speed (min ) weight (approx.) (kg) designation diameter JSH1045NW 45 8 000 465 35 17 162 80 102 110 8 3 − M10 × 1.5 Tap 18 Depth 32 25 M16 × 1.5 40 14 Parallel key 5 × 5 × 25 108 14 68 9 20 136 36 16.5 25 43
JSH1060NW 60 4 000 475 40 22 187 80 102 150 20 3 − M10 × 1.5 Tap 18 Depth 43 40 M30 × 1.5 58 19 Parallel key 7 × 7 × 30 140 15 85 9 25 170 45 20 30 70
JSH1080NW 80 3 000 480 45 22 202 118 142 185 26 6 − M12 × 1.75 Tap 18 Depth 62 55 M45 × 1.5 74 19 Parallel key 10 × 8 × 35 165 17.5 100 9 30 200 50 20 30 100
Unit: mm Dimensions Front bearing Max. rot. (2) Boring head shaft −1 A B D E F G J K L M P Q R S T V W X Y Z ★ Boring head speed (min ) weight (approx.) (kg) designation diameter SH3060NW 60 2 000 475 18 9 195 102 150 3 − M10 × 1.5 Tap 18 Depth PCD80 45 25 12 120 50 125 17.5 80 JIS Type A 3 line 160 30 20 4 70
SH3080NW 80 1 500 480 21 9 210 142 185 6 − M12 × 1.5 Tap 18 Depth PCD118 50 30 2 150 65 165 17.5 100 JIS Type A 4 line 200 30 20 5 100 Note (1) For pilot bush parts, please refer to the pilot bush parts dimensions table on this page. (2) The specification of the V-pulley groove is JIS B 1854 A type.
13 14 Other Spindles Other Spindles
Specially Designed Spindles With an Introduction to Other NSK Spindles
High-speed Integrated Motor Spindle for Machining Centers
Motor: AC Servo Motor (FANUC) Use: Machining center Lubrication: Grease, Grease replenishment Tool: BT40 HSK-A63
High-Frequency Spindle
Motor: High-frequency motor Use: NC milling machine, NC router, internal grinding Lubrication: Grease, oil mist, oil vapor Option: High-frequency inverter
φ20 × 30 000 min−1 (1.25 kW) φ8 × 180 000 min−1 (0.35 kW)
In addition to standard spindles, the spindles mentioned above are specially designed and manufactured by NSK. Be sure to indicate specially designed spindles in your order.
15 16 17 18 NSK used environmentally friendly printing methods for this publication.
CAT. No. E2202a 2012 X-3 Printed in Japan NSK Ltd. 2012