Quick Summary
The ZYAMY 4-piece bicycle crank ball bearing set is a replacement bearing set for bike crank and bottom bracket repair work. The set uses a 1/4 inch x 9 balls format and is meant for buyers matching the stated fit details to their bike parts.
The listed dimensions include an outer diameter of about 1.16 inches / 29.5 mm and an inner diameter of about 0.75 inches / 19 mm. Before choosing an offer, compare those measurements with the part you are replacing.
Key Details
| Detail | Product information and buyer relevance |
|---|---|
| Brand | ZYAMY. Useful for matching the exact replacement item. |
| Product type | Bicycle crank ball bearing set. Intended for bike crank replacement work. |
| Quantity | 4 pieces. Check that this quantity matches the repair you are planning. |
| Ball size | 1/4 inch x 9 balls. Match this format to the bearing you are replacing. |
| Outer diameter | About 1.16 inches / 29.5 mm. Compare against the space or part dimensions you need to match. |
| Inner diameter | About 0.75 inches / 19 mm. Confirm compatibility with the part size before buying. |
| Material | Steel. Relevant when comparing the bearing construction you want. |
What to Compare Before Buying
- Size: Check the stated outer diameter, inner diameter and ball format against the part you are replacing.
- Quantity: This set includes 4 pieces. Make sure that matches the repair or spare plan.
- Fit: The 19 mm inner diameter reference matters most if you are replacing a bearing in a matching crank or bottom bracket part.
- Material: The bearing cage is steel, so compare that construction with the type you want for the repair.
What Is Included
- 4 bicycle crank ball bearings
- 1/4 inch x 9 balls format
Before You Decide
Confirm the 29.5 mm outer diameter, 19 mm inner diameter and 1/4 inch x 9 balls format before choosing this set. It is a replacement part, so exact size matching matters more than appearance alone.
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