Product Description
Precision deep groove ball bearing assembly for manual pallet jack steering and load wheel applications. OEM bearing SKU 3B4128 for Liftsplus.com, steel construction, 20mm bore, 47mm outside diameter, 14mm width, double sealed, ISO metric standard.
Specifications
Dimensions
| Bore Size | 20mm |
| Outside Diameter | 47mm |
| Width | 14mm |
| Standard | ISO Metric |
Material & Construction
| Ring Material | Through-hardened bearing steel (SAE 52100 or equivalent) |
| Ball Material | Closed chromium steel |
| Seal Type | Double sealed |
Part Number
| Part Number | 3B4128 |
Frequently Asked Questions
Q: What is SKU 3B4128 and what is its application?
A: SKU 3B4128 is a precision deep groove ball bearing assembly designed for manual pallet jack steering and load wheel applications. This is an OEM bearing used in steering columns and load wheel hubs to provide smooth, durable rotation under the dynamic loads of warehouse and dock operations.
Q: What are the exact dimensions of SKU 3B4128?
A: SKU 3B4128 has a 20mm bore diameter, 47mm outside diameter, and 14mm width. These ISO metric standard dimensions are critical for proper fitment in steering assemblies and load wheel applications. Verify these dimensions match your equipment before ordering to ensure correct installation.
Q: What material is SKU 3B4128 made from?
A: The bearing rings are made from through-hardened bearing steel, SAE 52100 or equivalent, providing high hardness and wear resistance. The rolling elements are chromium steel balls for superior strength and corrosion resistance. Double-sealed construction protects the bearing from dirt and moisture in harsh material handling environments.
Q: What manual pallet jack brands use SKU 3B4128?
A: This bearing fits multiple manual pallet jack models from Crown, Toyota, Raymond, Yale, Hyster, and Clark. Verify your equipment model and bearing location match the 20mm bore, 47mm OD, and 14mm width specifications. Cross-reference your parts diagram to confirm part number compatibility.
Q: How long does SKU 3B4128 last in typical warehouse use?
A: Bearing lifespan depends on load, floor conditions, and maintenance. Under normal warehouse conditions with routine load jack operation, this bearing typically lasts 2-4 years before noise and rough rotation indicate replacement need. Wet floors, high operating temperatures, and contamination reduce bearing life significantly.
Q: How do I know if SKU 3B4128 needs replacement?
A: Replace the bearing if you notice grinding, squeaking, or rough rotation of the load wheels or steering column, excessive wheel wobble or play, or steering that feels rough or stiff. A faulty bearing makes the jack difficult to control and can cause safety hazards on the dock.