The GRACO 168191 is an air motor cylinder designed for use in GRACO industrial equipment. It is constructed with robust materials and features nitrile rubber seals and packings for durability. This part is intended to convert compressed air into mechanical motion, typically used in high-duty-cycle applications such as lubrication and fluid handling systems.

Key Features:

• Air motor cylinder
• 10 in. (255 mm) diameter, 4.75 in. (121 mm) stroke length
• Metal cylinder with nitrile rubber seals and packings
• Maximum incoming air pressure: 90 psi (0.6 MPa, 6 bar)
• Designed for GRACO industrial equipment; mounting hole layout and pump attachment details available in manual
• Balanced, opposing seals and detent rollers for smooth operation
• SST plate with sliding acetal ring air valves
• 18 exhaust holes for efficient venting
• Heavy-duty construction for reliability and long service life
• Recommended maximum speed: 50 cycles per minute
• Weight: 75 lb (34 kg)

Applications:
Used in industrial lubrication, fluid handling, and maintenance systems where reliable air-driven motion is required. Suitable for large-scale mining, manufacturing, and agricultural applications.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, safety, and longevity of equipment.
• Torque cylinder bolts to 150 ft-lb (203 N·m)
• Grease inside wall of cylinder before assembly
• Torque other fasteners as specified (20–25 ft-lb for some, 14–18 ft-lb for others)
• Plug exhaust holes when exhausting to outside or through muffler
• Ensure proper alignment and secure mounting
• Regularly inspect seals and packings for wear
• Keep air inlet and exhaust ports clean
• Follow recommended torque specifications during reassembly