The State Intellectual Property Office officially issued an invention patent to Shandong Bote Bearing Co., Ltd for its "excavator gearbox seal assembly" on April 27, 2016, which was initially applied on January 18, 2013.
Compared with traditional products, this invention patent features a higher sealing performance, able to effectively prevent the ingress of external dirt, dust, water and abrasive as well as leakage of oil and lubricants.
Product Model | Inside Diameter | Outside Diameter | Thickness |
NA49/28R NTN | 28 | 45 | 17 |
NK32/30R+IR28×32×30 NTN | 28 | 42 | 30 |