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With Straight Bore HubsBFCNote: Hub/shoulder designvaries per couplingsize. Consult <strong>Rex</strong>nordfor specific sizeassembly drawings.DAS p ecificatio n D ata With S traig h t B o re H u b sD imensio n s In In chesO mega Recom. C o n tinuous C o n tinuousC o u p lin g Max. B ore H P /100 To rq u e Max.CF W eightS iz e (In.) R P M (In . L b s.) R P M A B ( In .) ( O u t)D ( In .)(O u t)(L b. )E S 2-R 1.13. 3019075003.50. 943.504.001.855.755.922. 3E S 3-R 1.38. 5836575004.001.503.505.002.327.258.004. 0E S 4-R 1.63. 8855075004.561.693.505.002.607.258.385. 1E S 5-R 1.881.4892575005.381.753.505.003.137.258.507. 5E S 10-R 2.132.30145075006.381.883.505.003.657.258.7510. 3E S 20 2.383.65230048007.252.062.557.004.489.3811.1215. 6E S 30 2.885.79365042008.252.312.057.005.429.3811.6225. 1E S 40 3.388.85550036009.502.501.677.006.639.3812.0040E S 50 3.6312.147650310011.002.751.177.008.139.3812.5060E S 60 4.0019.8412,500280012.503.252.679.758.7512.5016.2584E S 70 4.5035.1222,125260014.003.621.999.759.2512.5017.00102E S 80 6.0062.7039,500180016.004.872.189.7511.2512.5019.50180Suffix “R” designates high speed ring design. Rings are furnished standard for sizes E S2-R to E S10-R, optional for sizes E S20 to E S80.Service factor = 1.0.Spacer coupling furnished with optional high speed rings (sizes E S 20 to E S 80) can be operated up to maximum allowable speeds for standardseries couplings. S ee RP M Ratings on page 4.Minimum shaft spacing is 0.25 inch. S ee page 8 for additional information.O verall length of element.With max bore hubs. See page 14 for larger bore capacities with shallow keyways.• Adjustable Spacer DesignOptional hole mounting positions and reversiblehub features allow adjustment to accommodatemost shaft spacing requirements (see page 8)• Universal HubsStraight bore and compression bushed hubdesigns are identical and interchangeable for boththe spacer and standard couplings. This meansmaximum utilization of off the shelf inventory.Straight Bore Hubs QD Hubs and Bushings TAPER-LOCK ® Hubs and Bushings6Note: Dimensions subject to change. Certified dimensions of ordered material furnished on request.
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