Description
Reviews
| Brand | - |
| Category | Electronic Components Market / Other Components |
| Origin | - |
| Material | High-Grade Carbon Steel |
| Model Number | BMB3*40*30 |
| Wall Type | Thin-Wall Design |
| Application | Mechanical Excavator Shafts |
| Inner Diameter | 30 mm |
| Outer Diameter | 40 mm |
| Length | Customizable Sizes Available |
| Surface Finish | Precision Machined |
| Hardness | HRC 45-50 |
| Compatibility | Universal Fit for Various Liners |
Anonymous
Mar 31, 2026
Rating: 4/5
Solid industrial grade
Very durable steel. The surface finish is smooth which reduces friction effectively. Delivery took a day longer than estimated, but the product quality makes up for it.
Anonymous
Mar 28, 2026
Rating: 5/5
Best replacement part
Replaced worn-out copper sleeves with these steel ones. The performance improvement in our excavators is noticeable. Highly recommend for heavy machinery maintenance.
Anonymous
Mar 25, 2026
Rating: 5/5
Excellent precision
As a procurement manager, I appreciate the consistency in sizing. These sleeves fit perfectly into our liner shaft assemblies. Will definitely reorder.
Anonymous
Mar 22, 2026
Rating: 4/5
Good quality, fast shipping
The thin-wall design works well for our specific application. Shipping was faster than expected. Only giving 4 stars because the packaging could be slightly more robust for heavy industrial parts.
Anonymous
Mar 17, 2026
Rating: 5/5
Perfect fit for our excavator repair
Ordered these sleeves for a fleet maintenance job. The dimensions were exact, and the steel quality is top-notch. Installation was smooth without any need for additional machining.
Anonymous
Mar 05, 2026
Rating: 5/5
Reliable component
We have used multiple sizes from this supplier. The BMB3*40*30 model holds up well under high stress. Great value for the price compared to OEM parts.
Q: Is the material resistant to corrosion in outdoor environments?
A: The carbon steel has a protective finish, but for harsh outdoor or marine environments, we recommend applying an additional anti-corrosion coating during installation.
Q: Do you offer a warranty on these components?
A: Yes, all our mechanical sleeves come with a 12-month warranty against manufacturing defects under normal operating conditions.
Q: Are these sleeves compatible with older excavator models?
A: Yes, the BMB3*40*30 size is designed to be universal, but we recommend checking your specific shaft dimensions against our size chart before ordering.
Q: Can these be welded directly onto the shaft?
A: These are press-fit sleeves designed for mechanical assembly. While they are made of weldable steel, we advise consulting your engineering team for specific welding procedures to avoid warping.
Q: What is the lead time for bulk orders of 500 units?
A: For bulk orders over 100 units, our standard lead time is 7-10 business days. Custom sizes may require an additional 3-5 days.
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