Chinese BK12 Fixed end bearing block

[JAZZCNC]

BK is Fixed end and consists of of 2 angular contact bearings held and preloaded within the housing. The photo shows all sizes depending on end machining and screw diameter. IE: Bk12 being used for 16mm screws Bk15 20mm etc.

BF is the floating end and just uses normal bearing which floats within the housing and is held onto the ballscrew with a Circlip.

[Steel]

BK is Fixed end and consists of of 2 angular contact bearings held within the housing. The photo shows all sizes depending on end machining and screw diameter. IE: Bk12 being used for 16mm screws Bk15 20mm etc.

BF is the floating end and just uses normal bearing which floats within the housing and is held onto the ballscrew with a Circlip.

That's just what i thought until i took the BF12 apart and found 2x 6001z bearings !!!

[JAZZCNC]

That's just what i thought until i took the BF12 apart and found 2x 6001z bearings !!!

Well it's knock off then because should have 2 x AC bearings which go back to back. It used to be common on the really cheap ones that the bearings where in the wrong way around so didn't work correctly allowing slop but still used AC bearings. Never seen one with skate board bearings before.!

[Steel]

Dam and i paid 260 inc postage of a ebay guy in Germany

[JAZZCNC]

Dam and i paid 260 inc postage of a ebay guy in Germany

Well if that's £2.60 inc postage then what did you expect.!

[komatias]

Yup got fleeced like that once too: 6001zz in the bearings blocks and paint inside the bore to hold the bearings in place...

[Steel]

After many emails i got given 6 angular contact bearings, hopefully this is a lesson for everyone to ask what bearings are fitted !!!