Anonymous
Mar 25, 2026
Rating: 4/5
Good quality, tight tolerance
Quality is great, but the OD was slightly tight for my aluminum plate. Had to ream the hole slightly. Otherwise, the ID is spot on for the drill bit.
Description
Reviews
| Brand | - |
| Category | Industrial Small Parts / Bearings & Bushings |
| Origin | - |
| Material | Tool Steel / Bearing Steel |
| Hardness | HRC 60-64 |
| Inner Diameter Tolerance | H7 Precision Ground |
| Outer Diameter Tolerance | p6 Press Fit |
| Surface Finish | Polished / Black Oxide |
| Heat Treatment | Through Hardened |
| Concentricity | < 0.005mm |
| Application | Drill Jigs, Fixtures, Tooling |
| Package Weight | Varies by Size Selection |
| Country of Origin | Imported |
Anonymous
Mar 25, 2026
Rating: 4/5
Good quality, tight tolerance
Quality is great, but the OD was slightly tight for my aluminum plate. Had to ream the hole slightly. Otherwise, the ID is spot on for the drill bit.
Anonymous
Mar 16, 2026
Rating: 5/5
Great value
Compared to other industrial suppliers, these are priced very well for the quality. Shipping was fast and packaging protected the parts nicely.
Anonymous
Mar 12, 2026
Rating: 5/5
Excellent hardness
Holds up well against HSS bits without showing wear after hundreds of cycles. The heat treatment seems consistent across the batch I ordered.
Anonymous
Mar 08, 2026
Rating: 5/5
Perfect for jig fixtures
Used these for a production run on our CNC mill. The concentricity is excellent and they fit perfectly into our fixture plates. Highly recommend for precision work.
Anonymous
Jan 23, 2026
Rating: 5/5
Precision as advertised
Concentricity is spot on. We use these for positioning sleeves in assembly jigs and they have reduced our scrap rate significantly.
Q: What is the maximum recommended RPM?
A: RPM depends on the drill bit and material being drilled, but the bushing itself can withstand standard high-speed drilling temperatures.
Q: Do I need to lubricate the bushing during use?
A: Light lubrication is recommended for extended tool life, especially when using high-speed operations.
Q: Can these be pressed into aluminum fixture plates?
A: Yes, but ensure the hole is sized correctly for a press fit to prevent the bushing from spinning under torque.
Q: What is the ID tolerance standard?
A: The inner diameter follows H7 precision ground standards suitable for standard drill bit shanks.
Q: Is a material certification available?
A: Yes, material certs are available upon request for bulk orders. Please contact us before purchasing.