Product Description
The Hyster load wheel axle assembly (4081638) is a greasable, direct replacement load wheel component engineered for Hyster W40Z and W45Z electric pallet jacks. Built to original equipment specifications, this greasable axle assembly ensures reliable wheel support under full load conditions. Featuring a sealed bearing design with periodic lubrication capability, the 4081638 maintains consistent load stability and smooth maneuverability across warehouse, dock, and material handling environments. Ideal for facilities requiring rugged, long-service-life wheel components on Hyster electric equipment. Verify compatibility with your specific truck model and serial number before ordering.
Specifications
Part Numbers
| OEM Part Number | HY 4081638 |
| Manufacturer Part Number | HY4081638 |
Frequently Asked Questions
Q: Which Hyster models specifically use the HY 4081638 greasable load wheel?
A: The HY 4081638 is specified for Hyster W40Z and W45Z electric lift truck models. These are OEM applications only. Do not install on other models without confirming compatibility with your equipment documentation.
Q: What maintenance does a greasable load wheel require?
A: Greasable wheels require periodic bearing lubrication according to your equipment manufacturer schedule. Establish a regular maintenance routine and monitor bearing temperature. Do not operate with insufficient lubrication, as this causes premature bearing failure.
Q: Are sealed bearing alternatives available for W40Z and W45Z models?
A: Sealed bearing load wheels are not OEM-specified for W40Z and W45Z models. These trucks are engineered for greasable bearings. Installing non-OEM sealed wheels can compromise load capacity and void equipment warranty. Confirm OEM specification before purchasing alternatives.
Q: What is the bore size and width of this axle assembly?
A: Bore size and width specifications for the HY 4081638 are OEM-matched to W40Z and W45Z chassis geometry. Verify exact dimensions by consulting your truck documentation or contacting us with your equipment serial number.
Q: How often should greasable bearings be relubricated?
A: Bearing relubrication intervals depend on hours of operation, load cycle intensity, and environmental conditions. Consult your Hyster equipment maintenance manual for W40Z and W45Z schedule. Over-greasing can damage seals; under-greasing causes bearing failure.