MyBike.parts
Reviews & Ratings
The reviewer analyzes a ceramic bottom bracket purchased from Temu. They confirm the bearings are ceramic based on their non-shiny, almost transparent appearance compared to steel. The reviewer notes it spins well but suggests the ceramic quality is likely not high-end. They lubricate the bearings with ceramic-specific grease as they arrived with minimal lubrication.
AI-Summary
Pros
- The bearings are confirmed to be ceramic.
- It spins really well.
- It is a legitimate ceramic bottom bracket for a low price.
Cons
- The quality of the ceramic bearings is suggested to not be the highest.
- The bearings arrived with almost no lubrication.
Key Points
- The bottom bracket is from Temu and claims to be ceramic.
- The plastic protector has 'ceramic' printed on it.
- The bearing code is 6806 RS.
- The ball bearings have a whitish, almost transparent color, indicating ceramic material.
- Steel bearings typically have a shiny, polished finish.
- The reviewer used ceramic-specific grease to lubricate the bearings.
- Proper installation requires a nicely prepared and aligned bottom bracket shell on the frame.
The reviewer unboxes and tests a HASSNS brand ceramic bottom bracket purchased from Temu. They describe the initial impressions as positive, noting the metal dust cover (instead of plastic), good seals, and the inclusion of a 22mm reduction spacer for compatibility with Shimano and SRAM GXP cranksets. They immediately encounter a compatibility issue with their 73mm mountain bike frame, as the bottom bracket appears designed for a 68mm shell. They proceed to install it on a vintage road bike with a 68mm shell instead. The installation is straightforward, and they are highly impressed with the smoothness and free-spinning nature of the ceramic bearings, calling it 'Next Level' compared to previous steel bottom brackets. They conclude by showing the product listing on Temu, cautioning viewers to carefully select the correct 'color' (which denotes the ceramic model) and size when ordering.
AI-Summary
Pros
- Initial impression is 'pretty good'
- Metal dust cover (instead of plastic) is 'kind of nice'
- Has 'nice seals'
- Includes a 22mm reduction spacer, making it compatible with both Shimano (24mm) and SRAM GXP (22mm) cranksets, which is 'pretty cool'
- Spins very smoothly and freely after installation
- The spin is described as 'pretty amazing', 'quite incredible', and 'Next Level'
Cons
- The brand (HASS/HASSNS) is unfamiliar to the reviewer
- The metal dust cover will be 'a bit heavier' than plastic
- The central axle/dust cover assembly does not work with a 73mm mountain bike shell width; it leaves no room for adjustment, making it incompatible with the intended frame
- No torque specifications are included in the packaging
- Shipping took 2-3 weeks, longer than the advertised 6-10 working days
- The reviewer cautions that on Temu/AliExpress, you must be 'really sure' you've selected the correct model, as not all options under the listing are ceramic
Key Points
- Brand: HASS/HASSNS
- Type: Ceramic bearing bottom bracket
- Standard: BSA threading
- Axle size: 24mm (with included 22mm reduction spacer)
- Includes additional spacers
- Dust cover is metal
- Intended for a 68mm shell width; incompatible with 73mm shell without modification
- Installation torque used: 40 Nm (following Shimano standard)
- Preload adjustment is critical and demonstrated
- Crank fixing bolts torqued to 14 Nm (Shimano standard)
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