HYDRAULIC SQUEEZE BUSHINGS

AMBUSH® Hydraulic Squeeze Bushings are used to clamp moving shafts to fixed housings in a wide range of applications. Type ASA Squeeze Bushings are designed to resist axial forces only. They are commonly used in fixturing and reciprocating shaft applications. Type AST Squeeze Bushings are designed to resist torque as well as axial forces. One or two holes (for dowel or roll pins) have been provided in the mounting cap to resist the torque and to insure that the Squeeze Bushing does not move. NOTE: The Squeeze Bushing clamps only to the shaft, not the outer diameter. The axial load is transmitted...

Axial Holding Force and Holding Torque Calculation Fa = d • (I - 2 • s ) • n • Phyd • m Sideload Calculations 0.75 *P»d ( 1.75*1+ C) Squeeze Bushings are not designed to take heavy sideloads. For this reason, auxiliary beanngs are offered for each size of Squeeze Bushing. The performance of a beanng is influenced by the conditions of speed, mating matenals. clearance, temperature, lubncation, type of loading etc. Of pnmary importance is the maintenance of an oil film between the beanng Surface to reduce (notion, dissipate heal and retard wear by minimizing metal to metal contact The most critical...

Notes: 1. Ream at assembly or drill for standard roll pins 2. Axial force based on 1,000 psi and coefficent of friction of .12 3. Side load at 1 inch axial distance to squeeze bushing, based on safety factor 3 and psurJ = 3000 Ibs/in?

Specifications and dimensions are subject to change without notification. Other sizes or special shapes can be funished upon request. Page 5

Specifcations and dimensions are subject to change without notification. Other sizes or special shapes can be furnished upon request.

1. Ream at assembly, or drill for standard roll pins. 2. Axial force based on 70 bar and coefficient of fiction of .12. 3. Side load at 25 mm axial distance to squeeze bushing, based on safety of 3 and pSUf( = 20 N/mm2

bushnc supm Figure 2 Type ASA Squeeze Bushing with (2) additional Type ASB bearings preloaded by (2) Type ASC caps with quadrings. Assembly will resist higher side loads of shaft. ASSEMBLY INSTRUCTIONS: 1. Provide chamfer (Figure 4), clean, deburr, and polish I.D. of housing to avoid damage of O-rings. When O-ring must be pushed over a cross-drilled port, the hole should be deburred or undercut and polished (see Figures 5 & 6). 2. Oil and grease O-rings and housing before assembly. 3. For AST bushings, use longer mounting screws to push bushing evenly into bore. 4. For ASA bushings, we suggest...