--- title: Hydraulic Accumulators & Components url: https://parts.cat.com/en/catcorp/category/hydraulics-accumulators-components description: Cat® hydraulic accumulator parts & bladder accumulator components. OEM replacement parts to maintain system pressure and protect your equipment. --- # Hydraulic Accumulators & Components ## Benefits of adding equipment Find factory fit parts and view diagrams. ## Specifications ### Bolt Length (in) - 4.84 ### Inside Diameter (in) - 0.301 - 0.38 - 0.568 - 3.15 ## Inside Diameter (in) - 0.301 - 0.38 - 0.568 - 3.15 **1 - 16 of 1130 results** ### [10R-5466: Cat® Reman Axial Piston Motor Fixed Displacement](https://parts.cat.com/en/catcorp/product/10R-5466) Cat® Reman Axial Piston Motor Fixed Displacement Length (in) 27.5 Height (in) 20.0 --- ### [396-4129: 29 Liter Compressed Nitrogen Gas Accumulator](https://parts.cat.com/en/catcorp/product/396-4129) Accumulator Length (in) 75.8 Material Carbon Steel Height (in) 7.0 --- ### [10R-5463: Cat® Reman Hydraulic Motor](https://parts.cat.com/en/catcorp/product/10R-5463) Cat® Reman Hydraulic Motor Length (in) 19.5 Height (in) 10.75 --- ### [20R-9075: Cat® Reman Axial Piston Motor Fixed Displacement](https://parts.cat.com/en/catcorp/product/20R-9075) Cat® Reman Axial Piston Motor Fixed Displacement Length (in) 14.0 Outside Diameter (in) 11.0 --- ### [10R-1473: Cat® Reman Axial Piston Motor Fixed Displacement](https://parts.cat.com/en/catcorp/product/10R-1473) Cat Reman Axial Piston Motor Fixed Displacement Length (in) 29.5 Height (in) 21.0 --- ### [186-6189: Accumulator For Air Conditioner](https://parts.cat.com/en/catcorp/product/186-6189) Air Conditioning Accumulator Diameter (in) 3.5 Length (in) 10.0 Material Carbon Steel Thread Size (in) (2x) 1-1/16-16-2B UNF Height (in) 9.72 --- ### [20R-9516: Cat® Reman Double Axial Piston Pump](https://parts.cat.com/en/catcorp/product/20R-9516) Cat Reman Double Axial Piston Pump (Variable Displacement) --- ### [20R-8270: Cat® Reman Accumulator](https://parts.cat.com/en/catcorp/product/20R-8270) Cat® Reman Accumulator (Service) Working Pressure (kPa) 25,000.0 Capacity (gal) 7.66 Length (in) 75.2 --- ### [20R-7440: Cat® Reman Gear Pump](https://parts.cat.com/en/catcorp/product/20R-7440) Cat Reman Gear Pump (2 Section) Material Sealants / Adhesives Adhesive ### [20R-3302: Cat® Reman Double Axial Piston Pump](https://parts.cat.com/en/catcorp/product/20R-3302) Cat Reman Double Axial Piston Pump (Variable Displacement) - Length (in): 13.5 - Height (in): 13.0 --- ### [186-6190: Refrigerant Accumulator](https://parts.cat.com/en/catcorp/product/186-6190) Air Conditioning Accumulator - Diameter (in): 3.5 - Length (in): 10.0 - Material: Carbon Steel - Thread Size (in): (2x) 1-1/16-16-2B UNF - Height (in): 9.87 --- ### [251-8266: 3.45 Liter Compressed Nitrogen Gas Accumulator](https://parts.cat.com/en/catcorp/product/251-8266) Accumulator - Length (in): 14.0 - Material: Carbon Steel - Height (in): 7.0 --- ### [627-1041: Hydraulic Brake Accumulator](https://parts.cat.com/en/catcorp/product/627-1041) Cat® 39.64Liter Hydraulic Brake Accumulator - Capacity (gal): 10.47 - Length (in): 59.98 - Outside Diameter (in): 8.78 - Temperature (°F): -40° to 224.6° - Weight (lb): 175.93 - Material: Carbon Steel --- ### [20R-6508: Cat® Reman Gear Pump](https://parts.cat.com/en/catcorp/product/20R-6508) Cat Reman Gear Pump - Material: Carbon Steel --- ### [20R-9076: Cat® Reman Axial Piston Motor Fixed Displacement](https://parts.cat.com/en/catcorp/product/20R-9076) Cat® Reman Axial Piston Motor Fixed Displacement - Length (in): 14.0 - Outside Diameter (in): 11.0 --- ### [10R-1724: Cat® Reman Hydraulic Pump](https://parts.cat.com/en/catcorp/product/10R-1724) Cat Reman Hydraulic Pump - Length (in): 37.5 - Height (in): 15.2 ## Key ### Factory Fit This part is designed to fit your Cat equipment based on the manufacturer’s specifications. Any changes to the manufacturer’s configuration might result in the product not fitting your Cat equipment. Please consult your Cat Dealer before purchasing to ensure that this part is appropriate for your Cat equipment in its current condition and assumed configuration. This indicator cannot guarantee compatibility for all parts. - Remanufactured - Non-Returnable - Kit - Replaced Cat hydraulic accumulators and hydraulic accumulator components help machines function by acting as a pressure and energy buffer: hydraulic accumulators store hydraulic energy by compressing nitrogen gas when system pressure is high, then release that stored energy when demand spikes or pressure drops, helping machines respond quickly and smoothly, stabilize pressure, absorb shocks, and maintain critical functions like braking and pilot controls even during short interruptions in pump flow or engine power. ## Cat® Hydraulics Accumulators & Components Frequently Asked Questions **What hydraulic accumulator parts and components does Cat offer?** Cat offers piston motors, piston pumps, gear pumps, hydraulic pumps, hydraulic service brake accumulators, accumulator assemblies, charging blocks, and many more accumulator components to fit the needs of both bladder accumulators and piston accumulators. Cat customers have many options for purchasing accumulator parts, including new and Cat Reman. All options are backed by the Caterpillar Limited Parts Warranty. Your local Cat dealer can help you identify the right fit and select the best hydraulic accumulator component options based on your budget and operating conditions. **What does a hydraulic accumulator actually do on heavy equipment?** A hydraulic accumulator stores pressurized hydraulic fluid and releases it on demand to supplement pump flow, absorb pressure spikes, and maintain system pressure when the pump is not running. On Cat equipment, accumulators are commonly used in braking systems, suspension circuits, and pilot pressure systems. **How do I know if my hydraulic accumulator needs to be replaced or just recharged?** Signs that an accumulator needs attention include slow or sluggish brake pedal feel, loss of implement control after engine shutdown, pressure gauge fluctuations, and system pressure dropping faster than normal when the pump is stopped. **What's the difference between a bladder accumulator and a piston accumulator?** Bladder accumulators use a flexible rubber bladder to separate gas and hydraulic fluid, providing fast response and effective shock absorption. Piston accumulators use a sliding piston to separate gas and fluid, offering greater durability and more precise control in high-pressure applications. The right choice depends on system requirements such as pressure range, response time, and application type. ## Product Pages Page 1 of 71 — showing results 1–16 of 1,130. - [Next page (2)](https://parts.cat.com/en/catcorp/category/hydraulics-accumulators-components?page=2) - [Last page (71)](https://parts.cat.com/en/catcorp/category/hydraulics-accumulators-components?page=71)