Page 208 of catalogue Super Precision Bearings of Schaeffler Technologies GmbH & Co. KG

Mounting guidelines
Handling of Super precision bearings

Bore

Bore Reference Number

Axial clamping force from including kN 1,2 1,4 1,7 2,4 2,3 2,6 3,0 3,3 3,7 4,1 4,4 4,8 5,3 5,7 6,1 6,5 7,0 7,4 8,4 9,3 10,3 11,3 12,4 13,4 14,5 15,7 16,8 19,2 21,6 24,2 26,8 29,5 32,2 35,0 37,9 40,9 32,9 2,5 2,8 3,1 3,8 3,7 4,0 4,3 4,7 5,1 5,4 5,8 6,2 6,6 7,1 7,5 7,9 8,4 8,8 9,8 10,8 11,8 12,8 13,8 14,9 16,0 17,2 18,3 20,7 23,3 25,8 28,4 31,1 33,9 36,8 39,7 42,7 45,8

Tightening torque from Nm 3,8 5,2 7,2 11,3 12,3 15,3 19,4 23,1 28,0 33,3 38,2 44,3 51,9 58,9 66,5 74,4 84,0 92,9 115 137 164 192 225 258 295 337 379 476 583 707 842 993 1 155 1 333 1 528 1 739 1 472 including

Thread

Lock nut recommendations Lock Nuts are generally used to clamp spindle bearing sets to the shaft. Nuts with axial bores are preferred over Groove nuts to tighten to the shaft, because air turbulence occuring at high speeds is minimized. The nut installation side should be ground with the thread in one chucking. A maximum axial runout tolerance of 2 μm is recommended. The clamping insert should be ground together with the thread and face, so that during the clamping procedure, the runout is not impaired.

5: Recommended clamping forces and nut tightening torque for Double Direction Angular contact thrust ball bearings from series 2344 and 2347

Left 4: Recommended clamping forces and nut tightening torque for Spindle bearings in the following designs B, HS, HC and XC for diameter series 718, 719, 70 and 72. Values indicated correspond to a side face pressure of 10 MPa.

6: Spindle specimen checklist (page 208) 7: Spindle template checklist (page 209)

207

Mounting

25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 120 130 140 150 160 170 180 190 200 220 240 260 280 300 320 340 360 380 400

5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 24 26 28 30 32 34 36 38 40 44 48 52 56 60 64 68 72 76 80

7,8 10,3 13,1 18,2 19,8 23,6 27,8 32,9 38,6 43,8 50,3 57,2 64,6 73,4 81,7 90,5 101 111 134 160 188 218 250 286 325 369 413 513 629 754 893 1 047 1 216 1 402 1 600 1 816 2 050

M25~1,5 M30~1,5 M35~1,5 M40~1,5 M45~1,5 M50~1,5 M55~2 M60~2 M65~2 M70~2 M75~2 M80~2 M85~2 M90~2 M95~2 M100~2 M105~2 M110~2 M120~2 M130~2 M140~2 M150~2 M160~3 M170x3 M180~3 M190~3 M200~3 Tr220~4 Tr240~4 Tr260~4 Tr280~4 Tr300~4 Tr320~5 Tr340~5 Tr360~5 Tr380~5 Tr400~5

Spindle bearing protocol – Assembly It is recommended that measuring values be recorded for quality assurance purposes, e.g. • Seating diameter, interference • Spacer difference dimensions • Steady-state temperature • Radial and axial runout. The use of a checklist can be helpful for this. Subsequently, an example and template are printed and these are also available at www.fag.com.