Single-Acting, Spring-Return Rams Available in capacities of 5 to 100 tons and for maximum working pressures up to 10,000 PSI; 2 to 1 safety factor on material yield; designed and tested to meet ANSI B30.1. Standard stroke lengths of 5/8" to 14-1/4", these compact rams require a minimum of mounting space. Several of the rams feature threaded ram collars and internal base threads to simplify mounting. Also,some of the models have threaded piston rod ends. OTC�s design ensures positive, leak-resistant sealing throughout all pressure ranges, yet full piston return characteristics are maintained. Additional bearing surface has been designed into these units, to effectively resist the punishing stress exerted by off-center loads. Depending on capacity, these rams can handle a variety of bending and straightening jobs, construction maintenance applications, pressing operations, body and frame straightening, and rear housing and axle correction. 10-Ton Single-Acting, Spring-Return Ram OTC No. 4103 Capacity in Tons: 10 Stroke: 2-1/8" Oil Capacity (cu. in.): 4.8 Effective Ram Area (sq. in.): 2.236 Tons at 10,000 PSI: 11.2 Spring Return: Yes Height Collapsed: 5-9/16" Height Extended: 7-11/16" Piston Protrusion at Collapsed Height: 1-1/16" Diameter: 2-1/4" Diameter: 1-5/8" Piston Thread (N.P.T.): 1-1/4" Collar Thread (Straight): 2-1/4" � 14 Internal Base Thread (N.P.S.M.): None Weight (lbs./oz.): 5 /14 All rams include No. 9796 3/8" NPTF half coupler; oil port threads are 3/8" NPTF.