A-A-52558A
3.8 Cylinder assembly. The cylinder assembly shall include a cylinder, valve mechanism, piston, and chuck. The valve mechanism shall control the direction of the air to the piston. The piston shall be a combination piston-hammer. The chuck shall be dimensioned to receive standard accessories having collared hexagon shanks 0.875 in. (22 mm) across the flats by 3.25 in. (830 mm) (see Figure 1). The chuck bushing shall be replaceable. An air cushion of not less than 0.003 in. (0.08 mm) at both ends of the piston stroke shall be furnished.
NOTE: Dimensions are in inches.
FIGURE 1. Shank dimensions.
3.9 Leader hose. Unless otherwise specified (see 7.3), a 10 foot (ft) long, 0.5 in. inside diameter hose (3 meters (m) long, 13 mm inside diameter) shall be furnished with an external 1/2-14 NPT connector with a double bolt clamp on one end and a 0.5 in. (13 mm) coupling half quick disconnect with male hose fitting with a size 1, pneumatic hose clamp conforming to SAE J1508 on the other end.
3.10 Air inlet connection. The air inlet connection thread shall be 1/2 in. internal American National pipe thread. The air inlet connection shall be a swivel type connection to allow the operator to position the hose without any tangling or pinching.
3.11 Exhaust port. The exhaust port shall be located to direct exhaust air away from the operator.
3.12 Accessories. When specified (see 7.3), the accessories listed below shall be furnished with the breaker. A latch type retainer shall be provided to prevent any accessory from becoming accidentally disengaged.
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