8.5 in. x 4 in. Smooth Flat Rubber Drive Tire - Pallet Jacks
SU 8-1/2X4X4 SF RUBBER
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Compatibility
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Reference Diagrams
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Product Description
Rubber Drive Tire - Smooth Flat
Specifications: 8.500 inch diameter x 4.000 inch width (8.500" x 4.000" | 8.5 x 4 wheel | 8.5 x 4-0 | 215.90mm x 101.60mm)
Specifications
Wheel Specifications
| Outside Diameter (in) | 8.500 |
| Width (in) | 4.000 |
| Outside Diameter (mm) | 215.90 |
| Width (mm) | 101.60 |
| Drive Tire Profile | Smooth Flat |
| Material | Rubber |
Frequently Asked Questions
Q: What is the exact tire dimension and what does SF mean?
A: This tire is 8.500 inches in outside diameter by 4.000 inches in width (215.90mm x 101.60mm). SF stands for smooth flat tread profile. The rubber compound provides grip on most floor surfaces and is commonly used on hand pallet jacks and manual lift equipment.
Q: Is this rubber tire equivalent to any press-on or polyurethane alternatives?
A: No. This solid rubber tire cannot be replaced with a press-on polyurethane tire. Press-on tires like SU 8.5 X 4 X 4-SF-P are bonded to steel bands and mount to cast iron hubs. This rubber tire is a solid molded unit that sits directly on a rubber tire wheel. Verify your wheel type before ordering.
Q: What are the signs this tire needs replacement?
A: Replace the tire if you see flat spots, chunks missing, or cracking on the tread. If the tire does not roll smoothly or creates noise during movement, check for internal damage or wire separation. Excessive wear (depth less than 1/8 inch) reduces traction and increases stopping distance on ramps.
Q: How do I remove and install this rubber tire?
A: The tire typically presses onto a metal wheel hub. Use a tire press or hydraulic press to remove the old tire straight off. Clean the hub of debris and old rubber. Press the new tire onto the hub straight and level to avoid binding. Do not pry with a screwdriver as this can crack the wheel hub. If no press is available, contact a local wheel service shop.
Q: What load capacity and speed limits apply to this tire?
A: Load capacity depends on the equipment frame and number of drive wheels in use. Most hand equipment with this tire size handles 4000 to 6000 lbs total jack capacity. Do not exceed 4 mph on smooth floors. On ramps or uneven surfaces, reduce speed to 2 mph or less to maintain control and prevent slipping.
Q: How long does a rubber tire last and what maintenance is needed?
A: Typical lifespan is 3 to 5 years depending on use intensity and floor conditions. Inspect tires monthly for cracks or wear. Keep them clean and dry. Do not expose the jack to direct sunlight or extreme heat for long periods as rubber degrades faster. Store indoors when not in use. Wipe tires with a dry cloth to remove dust and moisture.
