Product Description
Thrust Bearing
Compatibility: Fits pallet jacks made by Dayton, model 3KR84. SKU: WW PM-35P
Frequently Asked Questions
Q: What function does the WW PM-35P thrust bearing serve in a Dayton 3KR84 pallet jack?
A: The WW PM-35P is a thrust bearing that manages axial loading in the hydraulic pump assembly of Dayton 3KR84 manual pallet jacks. It prevents the pump plunger from moving sideways under load and absorbs the axial forces generated during the lift cycle, allowing smooth and efficient pressure buildup.
Q: Can the WW PM-35P thrust bearing be used on non-Dayton manual pallet jacks?
A: The WW PM-35P is engineered specifically for Dayton model 3KR84 hydraulic pump systems. Bearing bore diameter, height, and load rating are matched to this model. Cross-contamination with other brands or models will cause improper fit, leak pathways, or bearing failure. Verify your equipment before ordering to ensure compatibility.
Q: What are warning signs that the WW PM-35P thrust bearing is failing?
A: Failing bearings produce: grinding or squealing noise during pump operation, reduced lift speed even with full pump strokes, difficulty raising loads to full height, hydraulic fluid leaking from pump seals, or excessive heat at the pump housing. These symptoms indicate the bearing no longer supports axial loading properly and requires immediate replacement to prevent pump damage.
Q: What bearing material and load rating is the WW PM-35P specified for?
A: The WW PM-35P uses a ball thrust bearing with hardened steel races and chrome steel balls rated for axial loads up to 2,200 pounds under normal pallet jack duty. The bearing is sealed to minimize contamination from dust and hydraulic mist in warehouse environments. Load rating should not be exceeded to maintain bearing life and pump performance.
Q: How long does the WW PM-35P thrust bearing typically last before replacement?
A: Under standard warehouse duty, the WW PM-35P typically provides 2 to 4 years of service before bearing play becomes noticeable. Lifespan depends on load frequency, storage environment, and pump maintenance. Jacks operated in high-frequency lift cycles or dusty conditions may require bearing replacement sooner. Inspect bearing condition annually during pump service.