Rubber Contact Wheel 1/2" Shaft | Knife Grinder Belt Sander
Rubber Contact Wheel 1/2" Shaft | Knife Grinder Belt Sander
Small Rubber Contact Wheel with 1/2" Shaft – Knife Grinder & Belt Sander
Upgrade your knife grinding and belt sanding setup with this precision-machined small rubber contact wheel. Designed for both hobbyist and professional metalworkers, this wheel is compatible with sanding belts from #36 to #1000 grit, making it versatile enough for everything from aggressive stock removal to fine polishing. Made in Mainland China.
Key Specifications
- Outer Diameter Options: 1/2" (12.7mm) | 3/4" (19mm) | 1" (25.4mm) | 1-1/4" (31.8mm) | 1-1/2" (38.1mm) | 1-3/4" (44.45mm) | 2" (50.8mm) (±1mm tolerance for surface finish)
- Rubber Length: 2-1/2" (63.5mm)
- Shaft Diameter: 1/2" (12.7mm) — shaft ends measure 12.72mm for a precise press fit to a 0.5" ID bearing
- Total Length: 3-1/2" (88.9mm)
- Hardness: 80A–90A Shore A
- Material: High-quality rubber with bonded construction
- Model: RR034
Features & Benefits
- ✅ Wide Belt Compatibility: Works with standard sanding belts #36–#1000 for coarse grinding through fine polishing
- ✅ Superior Bonding: Rubber is securely glued for long service life and consistent performance
- ✅ Low Noise & Vibration-Free: Engineered for smooth, quiet operation in workshop environments
- ✅ Multiple Diameter Options: Choose the exact size to match your grinder setup
- ✅ Press-Fit Shaft Design: Precision shaft dimensions for secure, play-free bearing mounting
Applications
This rubber contact wheel is ideal for a wide range of metalworking and fabrication tasks, including:
- Knife making and blade grinding
- Flat, concave, and convex surface grinding
- Burr and flash removal
- Chamfering and edge finishing
- Fine polishing of metal and non-metal workpieces
More Sizes Available
Need a different size? We also carry contact wheels in 2", 3", 4", 6", 8", 10", 12", and 14" diameters, with widths of 1", 2", 2-1/2", and 3", in both serrated and solid surface configurations. Contact us to find your perfect match.
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Frequently Asked Questions
Q: What sanding belt grit range is compatible with this rubber contact wheel?
A: This rubber contact wheel is designed to work with sanding belts ranging from #36 grit (coarse grinding) all the way up to #1000 grit (fine polishing), giving you full flexibility for your metalworking or knife-making projects.
Q: What bearing size does the 1/2" shaft fit?
A: The shaft ends are machined to 12.72mm for a precise press fit into a standard 0.5" inner diameter (ID) bearing, ensuring a secure and play-free installation in your grinder setup.
Q: Can this contact wheel be used for non-metal grinding?
A: Yes! While this wheel excels at metal grinding tasks such as blade finishing and burr removal, it is also well-suited for grinding and polishing non-metal materials such as wood, plastics, and composites.
Q: What is the hardness of the rubber on this contact wheel?
A: The rubber compound on this contact wheel has a Shore A hardness rating of 80A–90A, providing a firm yet slightly flexible surface that maintains consistent belt contact during grinding and polishing operations.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.