Product Description
The Lift-Rite LF 8577 Seal Kit is an aftermarket hydraulic seal kit engineered for the lift cylinder of RG30 Ergonomic 3000 series manual pallet jacks. Superseding part number PR-8577, this kit is constructed with NBR seals for compatibility with hydraulic fluid service, includes a full set of O-rings, wiper seals, and piston seals, and supports a cylinder bore diameter of 2.50 inches ±0.005 inch. It is rated for 3000 PSI maximum working pressure and is designed for high-cycle durability and pre
Compatibility: Fits pallet jacks made by Lift-Rite, model LF 8577. SKU: LF 8577
Specifications
Hydraulic Specifications
| Maximum Working Pressure | 3000 PSI |
Mechanical Specifications
| Seal Material Specification | Nitrile rubber blend (NBR), rated for hydraulic fluid service |
| Installation Location Reference | Ergonomic 3000 manual pallet jack lift cylinder assembly |
Part Numbers & Compatibility
| Cross-Reference Part Numbers | Supersedes PR-8577, equivalent to LF PR8577 |
| OEM Part Number | PR-8577 |
| Manufacturer Part Number | LF 8577 |
| Compatible Equipment Models | RG30 Ergonomic 3000 manual pallet jack series |
Performance
| Seal Lifespan | Designed for 100,000 cycles under rated load |
Thread Specifications
| Seal Retaining Nut Thread | M12 x 1.75 metric thread |
Frequently Asked Questions
Q: What pallet jack models does the LF 8577 seal kit fit?
A: The LF 8577 seal kit is engineered for the lift cylinder of RG30 Ergonomic 3000 series manual pallet jacks. This kit supersedes part number PR-8577 and is equivalent to LF PR8577. Verify your equipment matches the RG30 Ergonomic 3000 series before ordering.
Q: What seal materials are in the LF 8577 kit?
A: The LF 8577 contains nitrile rubber blend (NBR) seals rated for hydraulic fluid service. The kit includes a full set of O-rings, wiper seals, and piston seals. NBR material provides compatibility with standard mineral hydraulic fluids and resists swelling and degradation.
Q: What is the pressure rating for the LF 8577?
A: The LF 8577 seal kit is rated for 3000 PSI maximum working pressure. The kit is designed for the lift cylinder with a bore diameter of 2.50 inches ±0.005 inch. Do not exceed rated pressure or use in applications with different bore dimensions.
Q: How long does the LF 8577 seal kit last?
A: The LF 8577 is engineered for high-cycle durability in frequent-use environments. NBR seals typically provide 3 to 7 years of service depending on cycle frequency, fluid cleanliness, and operating conditions. Signs of wear include slow lift speed or visible fluid leakage.
Q: What symptoms indicate the LF 8577 seals need replacement?
A: Symptoms of seal wear include external hydraulic fluid leakage around the cylinder rod, sluggish or incomplete lift, or the lift mechanism failing to hold load. If fluid seeps from the cylinder body, the seal kit should be replaced promptly to avoid further damage.