Product Description
SU S234-SP is a Liftsplus.com 4.00 x 2.75 inch polyurethane load wheel for electric lift trucks, featuring a 47 mm bore and a 28 mm hub length. Manufactured with an SAE 1045 steel core and polyurethane tread for high load durability in material handling applications.
Specifications
Material
| Tread Material | Polyurethane, Shore A85 hardness |
| Core Material | High-strength steel per SAE 1045 |
| Core Finish | Industrial phosphate conversion coating |
Part Numbers
| Manufacturer Part Number | SU S234-SP |
Frequently Asked Questions
Q: What is the difference between SU S234-SP and other SU S234 variants?
A: SU S234-SP is the full manufacturer specification for the 4.00 x 2.75 inch load wheel. The dash-SP suffix denotes Superior precision grade with specific material and hardness standards. This is the wheel core component used in SU S234-A assemblies. Order SU S234-SP for the wheel only, or SU S234-A for the complete assembly.
Q: What are the exact material specifications for SU S234-SP core and tread?
A: Core: SAE 1045 high-strength steel with industrial phosphate conversion coating for corrosion protection. Tread: Polyurethane compound Shore A 85 hardness (nominal). The steel core is precision-machined with a 47 mm bore and 28 mm hub length. This combination provides durability for material handling in warehouse and industrial settings.
Q: Does the SU S234-SP wheel require axle shafts longer than 20 mm?
A: SU S234-SP bore accommodates 20 mm axle shafts. The 28 mm hub length is the maximum width on the axle shaft. Ensure snap rings or retaining shoulders are positioned correctly to prevent lateral movement. Do not install on axles smaller or larger than 20 mm without bore modification.
Q: How does the phosphate conversion coating on SU S234-SP improve performance?
A: Phosphate conversion coating protects the SAE 1045 steel hub from rust and corrosion in humid, wet, or salt-exposed environments. This coating extends wheel life in harsh warehouse and outdoor settings. It is standard on all SU S234-SP wheels and requires no additional maintenance.
Q: What load does a SU S234-SP wheel support, and how is bearing capacity rated?
A: The 47/28 sealed ball bearing set in SU S234-SP supports heavy-duty applications rated for 4,000 to 6,500 pounds per axle, depending on truck model. Bearing capacity is based on radial and thrust load ratings. Total truck load is distributed across all wheels. Do not exceed manufacturer-rated truck capacity.