产品标记示例：
HJG-K3040AT，其中A表示履带式导轨块，
HJG-K2560BL，其中B表示燕尾式导轨块，
HJG-K3050T，表示滚动导轨块，
T表示联接孔为通孔、L表示联接孔为螺孔。
3、滚动导轨块精度表精度等级F、E、D、C各级公差值0.001、0.005、0.003、0.002供用户选择，分组允差是制造厂的允差。
例：滚动导轨块F、E级都在同组公差以内，D、C两级对用户、一组数量的公差保证在0.003MM、0.002MM以内，对制造厂则可按分组允差值制造
常用型号：
HJG-K3040A HJG-K3650A HJG-K4560A HJG-K5570A HJG-K6890AHJG-K82125A
HJG-K3050 HJG-K3662 HJG-K4575 HJG-K5585HJG-K68105 HJG-K82145
HJG-K2560B HJG-K2670B HJG-K2764B HJG-K3896B HJG-3070BHJG-K40100B
HJG-K40125B HJG-K52140B HJG-K52203B HJG-K76198BHJG-K124333B
HJG-K3475C HJG-K47104C HJG-K64140C
