A
Anonymous
Apr 12, 2026
Rating: 4/5
Solid performance
Works well in dusty environments. Would prefer slightly higher temp rating.
Description
SF1-7550/7560/7570/7580 Oil-Impregnated Bearing / Composite Bearing / Oil-Free Bushing / Shaft Sleeve / Bronze Bushing
Reviews
Attributes
| Brand | - |
| Category | Industrial Small Parts / Bearings & Bushings |
| Origin | - |
| Model Series | SF1-7550 to 7580 |
| Base Material | Low Carbon Steel |
| Sliding Layer | Porous Bronze |
| Inner Diameter | 75mm (Standard) |
| Outer Diameter | 80mm (Standard) |
| Length Options | 50mm, 60mm, 70mm, 80mm |
| Max Load Static | 250 N/mm² |
| Max Load Dynamic | 150 N/mm² |
| Friction Coefficient | 0.03 - 0.10 |
| Compliance | RoHS Compliant |
5 reviews
A
Anonymous
Mar 17, 2026
Rating: 5/5
Excellent durability
Installed these on our production line motors. No noise and smooth operation after 3 months.
A
Anonymous
Mar 07, 2026
Rating: 4/5
Good value for bulk
Quality is consistent across the batch. One unit had minor cosmetic scratches but functioned fine.
A
Anonymous
Mar 04, 2026
Rating: 5/5
Exact replacement
Matched the old SF1-7550 specs perfectly. Easy installation.
A
Anonymous
Feb 17, 2026
Rating: 5/5
Reliable supplier
We use these for client repairs. Never had a return due to failure.
5 FAQ
Q: Do you offer custom lengths?
A: Yes, custom lengths are available upon request for large orders.
Q: Can these be used underwater?
A: They are oil-impregnated, so submerged use is not recommended as it washes out lubricant.
Q: Is certification available?
A: Yes, material certification can be provided with bulk orders.
Q: What is the hardness of the bronze layer?
A: The bronze layer hardness is approximately 90 HB.
Q: What is the shaft tolerance recommendation?
A: We recommend a shaft tolerance of f7 for optimal performance.
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