60308391 Piston-type Accumulator Sany SAT40C Articulated Dump Truck Spare Parts

60308391 Hydraulic Piston-type Brake Accumulator for Sany SAT40C

The 60308391 Piston-type Accumulator is a critical high-pressure fluid power storage component designed for the wet-disc hydraulic braking system of the Sany SAT40C articulated dump truck. Mining haul trucks operate under severe, high-stress conditions. In fully hydraulic braking systems, having a constant and immediate pressure reserve is vital to actuate the wet-disc brakes reliably. The piston-type accumulator features a heavy-walled, seamless steel cylinder housing a free-floating internal piston. This piston separates a pre-charged nitrogen gas chamber on one side from the active hydraulic oil circuit on the other, acting as a responsive energy reservoir that charges during normal engine operations.

Most importantly, these accumulators serve as an **emergency failsafe safety system**. If the vehicle engine dies or the main hydraulic pumps fail, the stored pressure in the 60308391 accumulators provides enough hydraulic flow to allow multiple full-force emergency brake applications, protecting both the operator and the machinery. Over extended service cycles, the internal dynamic seals of the floating piston and the static seals on the end caps are subjected to continuous high temperatures and friction wear. This catalog group features Sany’s original Accumulator Repair Kit (61026743) containing all the low-permeability seals, wear bands, and O-rings required to completely rebuild the accumulator, eliminating gas-to-fluid leaks and restoring full energy storage capacity. We supply the complete 60308391 accumulator assembly as well as individual repair seal kits. Both genuine Sany OEM components and highly reliable aftermarket options are in stock for rapid international shipping.

General Assembly Specifications

60308391 Assembly Component Parts List

Below is the detailed parts catalog breakdown of the piston-type accumulator assembly as referenced in the Sany SAT40C technical manual. The primary seal repair kit is orderable separately for routine accumulator maintenance and overhauls:

Features & Benefits of Our Piston-type Accumulators

• Failsafe Emergency Braking Reserves: Stores high-pressure hydraulic energy to act as a critical auxiliary power reserve, allowing multiple full-power emergency stops in the event of an engine shutdown or main pump failure.
• Premium Low-Permeability Seal Kit: The Accumulator Repair Kit (61026743) contains specialized low-permeability elastomeric piston seals and backup rings designed to completely stop nitrogen gas from leaking into the hydraulic fluid channel, maintaining pressure stability.
• Heavy-Duty Seamless Steel Cylinder: Built with a thick-walled seamless steel body designed to handle high continuous system pressures (typically exceeding 210 bar) and resist external physical impacts in rugged mining zones.
• Pulsation Damping Performance: Acts as an inline hydraulic damper, absorbing high-frequency pressure ripples generated by the main hydraulic pumps to smooth out system operations and prevent hose fatigue.

Ordering & Technical Maintenance Guidelines

1. Regularly Monitor Nitrogen Pre-Charge: Piston accumulators rely on a precise nitrogen pre-charge pressure. If you experience a spongy brake pedal or a lag in braking response, the accumulator gas charge may have dropped. Have a qualified technician test and charge the nitrogen level according to Sany’s specifications.
2. Mandatory Seal Package Replacement on Rebuilds: Internal dynamic seals are subjected to continuous friction and heat. When overhauling the accumulator cylinder, always replace the entire seal kit (item 1). Reusing flattened or oil-swollen seals will lead to gas leakage and a total loss of energy storage.
3. Observe High-Pressure Safety Standards: Accumulators store immense gas and fluid energy under extremely high pressure. Never attempt to loosen end caps, remove valves, or disassemble the unit without completely discharging both the hydraulic fluid and the nitrogen gas charge first.

Contact our B2B sales department today with part number 60308391, your desired quantities, and delivery port to receive a formal commercial quotation within 1 business day.