Page 8 of Borgeson Catalog by Borgeson

If more than two joints are used in a steering system, a support bearing must be used to prevent looping and binding. Use of a vibration reducer and two u-joints will also call for a support bearing to be used. The support must be mounted to the frame, not to a sheet metal section of the body. Sheet metal will not withstand the stresses. The shaft should fit easily through the support with no binding. A system with a double u-joint and a single u-joint counts as a three joint system and would require a support bearing. Note: all support bearings work with round or DD shafting Rod End Bearings Rod end bearings with a 3/4" hole size are commonly used for supports. Rod end bearings are supplied with two jam nuts for mounting. They are available in steel, stainless steel and polished stainless steel. Billet Support Bearings All billet supports accommodate a 3/4" shaft. Our standard supports are 2-1/2" long with two threaded holes in the end for mounting and are available in steel, aluminum, polished aluminum, stainless steel, and polished stainless steel. A 6" long steel billet support is also available, which can be cut at any angle for a perfect fit. The steel support has no mounting holes and must be welded in. 6 BORGESON Steering Shaft Support Bearings Billet Aluminum Shaft Supports Steel Billet Shaft Support STEEL COUPLERS Steel Stainless Polished Description Steel Stainless 313400 323400 N/A 3/4-36 x 3/4 Smooth 313434 323434 N/A 3/4-36 Through Spline 310900 320900 N/A 9/16-26 x 3/4 Smooth 314300 324300 N/A 1-48 x 1-1/4 Smooth 315200 325200 N/A 1 DD x 1-1/4 Smooth 314900 324900 N/A 3/4 DD x 3/4 Smooth 311800 321800 N/A 5/8-36 312100 322100 N/A 5/8-36 Chrysler Couplers and Adapters Often a u-joint can be eliminated by using a 2" straight extension, called a coupler, to extend either the steering box, R P shaft or the column shaft. The coupler can be welded and/or pinned to the unsplined end of a shaft. We offer shafts that are splined only on one end in 3 lengths: 5", 16" and 36". The 1"- 48 and 1"- DD couplers have a 1-1/4" hole that will accept either an adapter to reduce inside diameter to 3/4" smooth or another splined or 3/4" DD coupler. The coupler assembly would have to be pinned and/or welded together. Welding the coupler is acceptable because there are no moving parts to damage, and the couplers steel is less susceptible to heat damage from welding. As an alternative, you can use a Vibration Reducer as a coupler to extend a short shaft, since the VR now comes with female ends to fit many popular applications. Couplers are available in the same spline and Double D sizes as our u-joints. Couplers and adapters are available in steel and stainless steel. Aluminum couplers and adapters are not available. 3/4 1-1/4 13/16 1 1 1-1/4 1-1/4 1-1/2 1-1/4 1-1/2 1 3/4 1-1/4 3/4 C736 3/4" 36 Spline x 3/4" Smooth 1 3/4 1-1/4 3/4 1-1/4 3/4 3/4 7DD 3/4" DD x 3/4" Smooth C836 13/16" 36 Spline x 1" Smooth C736 x 2 3/4" 36 Spline Only C1DD 1"Double D x 1-1/4" Smooth C148 1" 48 x 1-1/4" Smooth A-10R 3/4"I.D x 1"O.D. A-12R 3/4"I.D x 1-1/4"O.D. p n o THROUGH SPLINE COUPLER COUPLERS ADAPTERS COUPLERS SHAFT SUPPORT BEARINGS Steel Stainless Polished Description Steel Stainless 700000 710000 720000 Steel Rod End Bearing 670000 680000 690000 Billet Support 2-1/2" 670600 N/A N/A Billet Support 6" Many other sizes are available and in stock.

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