Ball Bearings Catalog Page D120 Super Precision Ball Bearings-Pillow Block Units

A BALL BEARINGS D D120 TIMKEN PRODUCTS CATALOG MM-EX REPLACEMENT BEARINGS - FOR EX-CELL-O SPINDLES Ex-Cell-O Preload Bore (in.) O.D. (in.) Width - Pair (in.) Maximum Bearing Number Part No. lbs. Speed Max. Min. Max. Min. Max. Min. (RPM) MM20EXCR DU FS223 20 0 0.3752 .3750 1.1252 1.1250 0.6875 0.6775 65000 MM30EXCR DU FS223 30 0 0.6252 .6250 1.5002 1.5000 1.0000 0.9900 35000 MM30EXCR DU 5 # 30 5 0.6252 .6250 1.5002 1.5000 1.0000 0.9900 25000 MM50EXCR DU FS223 50 0 0.8127 .8125 2.0002 2.0000 1.0000 0.9900 30000 MM50EXCR DU 10 # 50 10 0.8127 .8125 2.0002 2.0000 1.0000 0.9900 18000 MM50EXCR DU 50 # 50 0.8127 .8125 2.0002 2.0000 1.0000 0.9900 5000 *MM55EXCR DU 10 # 55 10 0.8127 .8125 2.0002 2.0000 1.0000 0.9900 22000 MM57EXCR DU FS223 57 0 1.0627 1.0625 2.2502 2.2500 1.0000 0.9900 30000 MM57EXCR DU 10 # 57 10 1.0627 1.0625 2.2502 2.2500 1.0000 0.9900 15000 MM57EXCR DU 50 # 57 50 1.0627 1.0625 2.2502 2.2500 1.0000 0.9900 5000 MM67EXCR DU FS223 67 0 1.2502 1.2500 2.4377 2.4375 1.2500 1.2400 30000 MM67EXCR DU 10 # 67 10 1.2502 1.2500 2.4377 2.4375 1.2500 1.2400 12500 MM67EXCR DU 30 # 67 30 1.2502 1.2500 2.4377 2.4375 1.2500 1.2400 7500 MM67EXCR DU 75 # 67 75 1.2502 1.2500 2.4377 2.4375 1.2500 1.2400 4500 MM90EXCR DU 20 # 90 20 1.6252 1.6250 3.4377 3.4375 1.6250 1.6150 10000 MM90EXCR DU 100 # 90 100 1.6252 1.6250 3.4377 3.4375 1.6250 1.6150 4500 MM90EXCR DU 150 # 90 150 1.6252 1.6250 3.4377 3.4375 1.6250 1.6150 2700 MM90EXCR DU 250 # 90 250 1.6252 1.6250 3.4377 3.4375 1.6250 1.6150 900 **MM92EXCR DU 20 # 92 20 1.7502 1.7500 3.4377 3.4375 1.6250 1.6150 12000 **MM92EXCR DU 100 # 92 100 1.7502 1.7500 3.4377 3.4375 1.6250 1.6150 4500 **MM92EXCR DU 150 # 92 150 1.7502 1.7500 3.4377 3.4375 1.6250 1.6150 2700 **MM92EXCR DU 250 # 92 250 1.7502 1.7500 3.4377 3.4375 1.6250 1.6150 900 MM115EXCR DU 30 # 115 30 2.2502 2.2500 4.7502 4.7500 2.2500 2.2400 5000 MM115EXCR DU 250 # 115 250 2.2502 2.2500 4.7502 4.7500 2.2500 2.2400 3600 MM115EXCR DU 350 # 115 350 2.2502 2.2500 4.7502 4.7500 2.2500 2.2400 1800 MM135EXCR DU 20 # 135 20 1.2502 1.2500 2.6877 2.6875 1.2500 1.2400 8000 MM135EXCR DU 75 # 135 75 1.2502 1.2500 2.6877 2.6875 1.2500 1.2400 4000 MM155EXCR DU 150 # 155 150 2.7502 2.7500 4.7502 4.7500 2.2500 2.2400 4000 MM155EXCR DU 300 # 155 300 2.7502 2.7500 4.7502 4.7500 2.2500 2.2400 1800 MM165EXCR DU 200 # 165 200 3.5002 3.5000 6.3127 6.3125 3.0000 2.9900 2800 MM165EXCR DU 400 # 165 400 3.5002 3.5000 6.3127 6.3125 3.0000 2.9900 1200 These bearings not intended for new design applications. Consult your local Timken representative. Do not interchange with MM-XWO. * Four slots in outer ring faces. ** No keyway in bore. FS-223 Zero to negative preload. EX-CELL-O SPINDLE BEARINGS "EX" Series (Timken Fafnir WI construction) designed to meet Ex-Cell-O replacement requirements for inch nominal spindles with bore and O.D. tolerances nominal to plus. "XWO" Series (Timken Fafnir WO separable construction) designed to meet Ex-Cell-O replacement requirements for inch nominal spindles with bore and O.D. tolerances nominal to minus. Measurement of shafts and housings (or reconditioning of parts) should determine replacement bearing style. Shafts and housings should be checked (and reworked) to avoid improper shaft and housing fits. Preload selection should be based on operating speed and lubrication system of spindle.

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