Omega extended spacer couplings are designed to connect equipment with shaft spacing requirements beyond the Omega spacer coupling capabilities. They are ideal for applications with wide non-standard shaft gaps, and can be an economic alternative to floating shaft couplings (i.e. stock pump applications.)

Sleeve extensions ("SE") are furnished in steel. They mount to regular Omega spacer elements (standard elements for sizes E100 & E120) and cast iron or steel hubs - straight bore or compression bushed design. By adjusting the hub/shaft engagement (see figures E & F on page E-8) and spacer element mounting position, the Omega extended spacer coupling can be utilized for many shaft spacing requirements.

Single Extension                Double Extension

Maximum Spacing ­ "C" Dimension ­ Inches

Spacer Coupling Size	Max. RPM Std.	Max. RPM Matched Assembly	With SHRB Hubs			With HQD Hubs			With HTL Hubs			Weight (Lb.) One SE
			Max. Without SE	One SE	Two SE	Max. Without SE	One SE	Two SE	Max. Without SE	One SE	Two SE
ES3-R ES4-R ES5-R ES10-R	1800 1800 1800 1800	3600 3600 3600 3600	5.00 5.00 5.00 5.00	7.00 7.00 7.00 7.00	9.00 9.00 9.00 9.00	- - - - 5.56 5.06 5.49	- - - - 7.56 7.06 7.49	- - - - 9.56 9.06 9.49	5.38 5.38 5.38 5.25	7.38 7.38 7.38 7.25	9.38 9.38 9.38 9.25	1.2 1.4 1.5 1.6
ES20 ES30 ES40 ES50 ES60 ES70 ES80	1800 1800 1800 1800 1800 1800 1500	3600 3600 3600 3100 2800 2600 1800	7.00 7.00 7.00 7.00 9.75 9.75 9.75	9.75 9.75 9.75 9.75 14.38 15.13 15.38	12.50 12.50 12.50 12.50 19.00 20.50 21.00	6.96 6.44 5.74 6.24 7.68 6.72 4.76	9.71 8.97 8.23 8.73 12.31 12.10 10.39	12.46 11.72 10.98 11.48 16.93 17.47 16.01	6.75 6.50 6.00 6.00 8.75 7.34 6.84	9.50 9.25 8.75 8.75 13.38 12.72 12.37	12.25 12.00 11.50 11.50 18.00 18.09 18.00	3.7 4.5 5.3 8.0 20.8 34.6 46.2
E100 E120	1500 1500	1800 1800	3.75 4.88	8.75 10.13	13.75 15.38	1.75 1.74	7.00 6.74	12.25 11.74	6.00 7.13	11.25 12.13	16.50 17.13	76.0 81.3

Maximum spacings shown are with hubs mounted outward and flush with shaft ends. Longer custom length extensions are available; consult Rexnord.
Hub/sleeve extension assembly precisely machined and matched to obtain higher speed rating. Specify "Matched Assembly" when ordering.

ORDER INFORMATION: When ordering, be sure to specify whether one or two sleeve extensions are required. If custom length, specify distance between shaft ends.

· Optional sleeve extensions ("SE")
An economical alternative to floating shaft couplings (i.e., stock pump applications).