CAT 094-1838 RETAIN BALL

CAT 094-1838 (0941838) is a Caterpillar hydraulic pump plunger slipper retaining ball (plunger slipper ball head retainer), compatible with CAT high-pressure axial piston pumps (such as the 330/336 excavator main pump). It is used to secure the plunger slipper ball head, preventing slipper detachment, ensuring flexible hinge between the plunger and slipper, transmitting hydraulic thrust, and reducing friction. It is often used in conjunction with plungers and slippers.

Core Parameters

Item Details
Part Model CAT 094-1838 (0941838) Hydraulic Pump Piston Slipper Fixing Ball

Type: Piston slipper ball head fixing part, prevents detachment, ensures flexible hinge connection

Material: GCr15 bearing steel, quenched and tempered, surface hardened, hardness HRC60-64, wear-resistant and fatigue-resistant

Key Dimensions: Diameter approx. 12mm, single weight approx. 0.02kg, fits piston slipper ball head mounting groove

Compatible Models: CAT 330, 336 and other excavator high-pressure axial piston pumps (main pump/pilot pump)

Matching Relationship: Matched with pistons and slippers, 1 piece per piston slipper

Applicability and Application

Applicable Part: Ball head connection between hydraulic pump piston and slipper, fixes slipper to prevent detachment, ensures flexible hinge connection between piston and slipper, transmits hydraulic thrust and reduces friction and wear at the ball head.

Application Scenarios: Suitable for heavy-duty applications such as mining, large-scale earthmoving, and road construction. Compatible with CAT high-pressure axial piston pumps, enhancing pump operational stability and durability.

Core Functions: Secures the piston slipper ball head, preventing slipper detachment, ensuring flexible hinge between the piston and slipper, reducing friction and wear at the ball head, and ensuring efficient and stable hydraulic pump output pressure.

Installation and Maintenance Points:

Installation: Clean the piston ball head, slipper ball socket, and fixing ball mounting groove. Apply hydraulic oil, insert the fixing ball into the mounting groove, and tighten it securely. Ensure the slipper and piston hinge is free of jamming. After installation, test pump operation; no abnormal noise or leakage is required.

Maintenance: Check the wear and tightness of the fixing ball every 500 hours. Replace immediately if wear, deformation, or loosening is observed to prevent slipper detachment and pump damage.

Replacement: Use genuine parts first. After installation, test pump pressure and flow; ensure normal operation and stable hydraulic system function.