CAT 114-9269 Protective Sleeve

CAT 114-9269 is a Caterpillar piston rod protector, adapted for hydraulic cylinder piston rods. It prevents the intrusion of sand, mud, and debris, protecting the seals and the chrome plating of the piston rod. It is compatible with the boom/stick cylinders of Cat 320GC/323GC excavators, 950GC loaders, and other models. The following is professional structured information from Cat® Parts.

Core Parameters (Professional Version)

Project Details
Basic Attributes Model 114-9269, 1 unit per cylinder, compatible rod diameter 80 mm, matching cylinder 359-0677, sealing assembly 125-2971, single weight 0.8 kg, structure is folded corrugated rubber + metal pressure rings at both ends, including dustproof lip and clamping clamp

Key Dimensions Inner diameter 80 mm (tolerance ±0.5 mm), outer diameter 120 mm (unfolded state), free length 280 mm, compressed length 110 mm, stroke 170 mm, inner diameter of metal rings at both ends 80 mm / outer diameter 100 mm, clamping groove width 10 mm (tolerance ±0.2 mm), lip thickness 3 mm (Shore A70 hardness)

Material and Process The main body is oil-resistant neoprene rubber (CR), aging resistant / acid and alkali resistant, working temperature -40℃ to + 100℃; both ends of the metal pressure ring are made of Q235 steel, galvanized and passivated for corrosion protection; the dustproof lip is made of polyurethane (PU), with a low coefficient of friction (≤0.06) and tear strength ≥25 kN/m.

Performance Parameters: Rated protection level IP65, resistant to hydraulic oil/diesel/ethylene glycol, tensile strength ≥15 MPa, elongation at break ≥300%, dynamic fatigue resistance ≥500,000 cycles (stroke 170 mm, frequency 1 Hz), suitable for a maximum lever speed of 0.8 m/s.

Compatible Models: Cat 320GC/323GC/326GC excavators, 950GC/962GC loaders, M318F wheel excavators, suitable for medium-pressure hydraulic circuits (≤25 MPa) with a cylinder stroke ≤170 mm.

Installation and Maintenance Points: Clean the piston rod and cylinder flange before installation, ensuring the sealing surface is free of burrs/scratches; install the cylinder end metal ring first (using M6). Tighten the bolts to a torque of 12 N·m, then install the protective sleeve, and finally install the metal ring at the piston rod end and clamp it (clamping force ≥ 8 kN), ensuring the lip fits snugly against the rod surface (gap ≤ 0.1 mm), avoiding twisting or folding.

Maintenance cycle: Every 500 hours, check the corrugations for cracks and the lip for wear (replace when wear > 1 mm), clean the lip of accumulated dust, and avoid contact with sharp objects.

Troubleshooting: If the cylinder leaks externally/the piston rod is corroded, first check for damage to the protective sleeve and loose clamping clamps, and immediately replace and repair the seals.