Jungheinrich Caster Wheel Assembly for Pallet Jacks

Frequently Asked Questions

Q: What are the key specifications of the JU 51237318-SG caster wheel with string guards?
A: The JU 51237318-SG is a caster wheel with 95A durometer polyurethane tread, high-strength steel core with sealed bearings, and polymer composite string guards. The wheel is designed for Jungheinrich electric pallet jack applications as a direct replacement component.

Q: What is the purpose of the string guards on this wheel assembly?
A: The polymer composite string guards protect the wheel edges and reduce the accumulation of plastic strapping, wire, and other linear debris that can wrap around the caster. This extends wheel life and reduces maintenance downtime in environments where packaged goods or strapping materials are handled frequently.

Q: Does the JU 51237318-SG fit equipment designed for the standard JU 51237318?
A: The JU 51237318-SG has the same wheel diameter and width as the standard JU 51237318, but the string guards add material to the wheel assembly. Fitment depends on whether your caster pocket accommodates the larger profile. Verify your equipment specifications and compare the width and depth of the caster cavity before ordering.

Q: What is the sealed bearing design and why does it matter?
A: The sealed bearing design prevents moisture, dust, and debris from entering the bearing cavity. This means the bearings do not require periodic relubrication and have extended service life compared to open bearings. The sealed design is especially important in facilities with high-humidity, wet, or dusty conditions.

Q: Can the JU 51237318-SG string guards be removed if not needed?
A: The string guards are integral to the wheel assembly design and are not removable components. If your application does not require string guards or space is limited, order the standard JU 51237318 instead. Compare both part numbers to confirm which matches your caster pocket dimensions and operational needs.

Q: What maintenance does this wheel assembly require?
A: Due to the sealed bearing design, routine lubrication is not necessary. Periodically inspect the polyurethane tread for wear and cracks, and ensure string guards are free from wrapped debris. Replace the assembly when tread wear exceeds safe operating limits or bearing performance degrades.