... high precision4. cylindrical roller, groove ball, angular contact ball, self-aligning roller , thrust ball, pillow block, tapered roller5. HS ... Our main products including: 1Low-noise deep groove ball bearing(more than 6000 series)2Spherical roller bearings ... roller bearings (NU,NJ,NUP) 9Angular contract ball bearings Related industriessteel industry,mining& construction,papermaking machinery ...