Mounting Timken Tapered Bore Spherical Roller Bearings ...

1 Mounting Timken Tapered Bore Spherical Roller Bearings 1M 02-14 :29 5737 INC | Timken is a registered trademark of The Timken Company. | 2014 The Timken Company | Printed in Tapered bore Spherical Roller Bearings are several times to properly seat the rollers. Insert Example: mounted on Tapered shafts (Fig. 1) or on feeler guage blades between the outer ring bearing 22328K C3 (140 mm bore, taper 1:12) is cylindrical shafts with Tapered sleeves. The and top most rollers (Fig. 5). Be sure to cover being mounted on Tapered shaft. sleeves are either adapter or withdrawal the full Roller length.

2 The unmounted RIC is configurations (Fig. 2 and 3). the thickest blade that will slide through. Both A. Using feeler guage measure unmounted RIC. bearing rows should be checked in this manner. From chart it should be - . Correct shaft Mounting is dependent on the B. Move bearing on shaft until line-to-line contact axial movement of the bearing up the Tapered During Mounting , the RIC should be measured exists with bearing bore. seat. This axial movement produces an at the unloaded rollers. This may be at the interference fit which removes bearing radial top or bottom of the bearing depending on C.

3 Using locknut or hydraulic nut, force bearing internal clearance (RIC). RIC measurement orientation. The rollers must be seated during up the Tapered seat until - RIC. before and during Mounting is the preferred the process. Axial movement should continue is removed. method to determine adequacy of shaft fit until the recommended RIC reduction is - . (Fig. 4). Recommended RIC reductions are obtained. axial displace- supplied in the table on the reverse side. ment required. The mounted RIC should not be less than the D. Final measured To measure the unmounted RIC, place the minimum permissible value from the table.

4 RIC should not bearing in an upright position and center the Timken hydraulic nuts are recommended for be less than inner and outer rings. Oscillate the inner ring Mounting larger Spherical Roller Bearings .. RIC. Fig. 5. Bore . Fig. 1. Fig. 2. Fig. 3. Fig. 4. Mounting with Mounting with Mounting with Radial internal Tapered shaft adapter sleeve withdrawal sleeve clearance The Timken team applies their know-how to improve the reliability and performance of machinery in diverse markets worldwide. The company designs, makes and markets high-performance mechanical components, including Bearings , gears, belts, chain and related mechanical power transmission products and services.

5 Mounting Timken Tapered Bore Spherical Roller Bearings Normal C3 C4 1:12 Taper(1) 1:30 Taper(1) Normal C3 C4. Nominal Recommended bearing Bore Reduction of RIC Axial Displacement Radial Internal Clearance Prior to Mounting Minimum Permissible RIC. Tapered Shaft Installation After Installation Over Incl Max Min Max Min Max Min Max Min Max Min Max Min mm mm in. in. in. in. in. in. in. in. in. in. in. in. in. in. in. 30 40 - - 40 50 - - 50 65 - - 65 80 - - 80 100 - - 100 120 120 140 140 160 160 180 180 200 200 225 225 250 250 280 280 315 315 355 355 400 400 450 450 500 500 560 560 630 630 710 710 800 800 900 900 1000 1000 1120 1120 1250 Axial displacement values apply to solid steel shafts or to hollow steel shafts with bore diameter less than half the shaft diameter.

6 For shaft materials other than steel or for thin-wall shafts, please contact a Timken sales representative. (1) 1:12 Taper used for 222, 223, 230, 231, 232, 233, 239 series. 1:30 Taper used for 240, 241, 242 series. For sleeve Mounting , multiply axial displacement values by for 1:12 taper or by for 1:30 taper. Questions on Tapered shaft data, contact a Timken sales representative.