GB/T 893 is a Chinese national standard specifying Circlips for Shafts (commonly called shaft shoulder circlips or C-type retaining rings), belonging to the category of elastic fasteners.
In terms of properties, it has a C-shaped open ring structure without threads. Its key dimensions include inner diameter (matching shaft diameter), outer diameter (blocking components) and thickness (determining strength). It is usually made of 65Mn spring steel (after heat treatment) or stainless steel, with galvanized/passivated surface, complying with mechanical standards for elasticity and hardness.
Its features are compact structure—it can be snapped into the shaft’s annular groove through the opening without extra tools for quick axial positioning of on-shaft components; after installation, it is fixed by its own elasticity, offering strong anti-loosening performance, and is easy to disassemble without damaging the shaft.
It is mainly used in motors, automobile gearboxes, home appliances (e.g., washing machine bearings) and mechanical transmission parts to limit axial movement of bearings, gears, bushings, etc. It replaces traditional nuts for positioning, saves installation space, and is suitable for medium and light load working conditions.
| Nominal Diameter | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | ||
| d | |||||||||||||||||
| s | max | 0.8 | 0.8 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |
| min | 0.75 | 0.75 | 0.94 | 0.94 | 0.94 | 0.94 | 0.94 | 0.94 | 0.94 | 0.94 | 0.94 | 0.94 | 0.94 | 0.94 | 0.94 | ||
| dc | Nominal Size | 8.7 | 9.8 | 10.8 | 11.8 | 13 | 14.1 | 15.1 | 16.2 | 17.3 | 18.3 | 19.5 | 20.5 | 21.5 | 22.5 | 23.5 | |
| max | 9.06 | 10.16 | 11.16 | 12.16 | 13.36 | 14.46 | 15.46 | 16.56 | 17.66 | 18.72 | 19.92 | 20.92 | 21.92 | 22.92 | 23.92 | ||
| min | 8.6 | 9.7 | 10.7 | 11.7 | 12.9 | 14 | 15 | 16.1 | 17.2 | 18.17 | 19.37 | 20.37 | 21.37 | 22.37 | 23.37 | ||
| a | max | 2.4 | 2.5 | 3.2 | 3.3 | 3.4 | 3.6 | 3.7 | 3.7 | 3.8 | 3.9 | 4.1 | 4.1 | 4.2 | 4.2 | 4.2 | |
| b | ≈ | 1.1 | 1.3 | 1.4 | 1.5 | 1.7 | 1.8 | 1.9 | 2 | 2 | 2.1 | 2.2 | 2.2 | 2.3 | 2.4 | 2.5 | |
| d1 | min | 1 | 1 | 1.2 | 1.2 | 1.5 | 1.5 | 1.7 | 1.7 | 1.7 | 1.7 | 2 | 2 | 2 | 2 | 2 | |
| d2 ① | 3 | 3.3 | 3.7 | 4.1 | 4.9 | 5.4 | 6.2 | 7.2 | 8 | 8.8 | 9.4 | 10.4 | 11.2 | 12.2 | 13.2 | ||
| Installation tool specification | 1 | 1 | 1.5 | 1.5 | 1.5 | 1.5 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | ||
| per 1000 units ≈ kg | 0.14 | 0.15 | 0.18 | 0.31 | 0.37 | 0.42 | 0.52 | 0.56 | 0.6 | 0.65 | 0.74 | 0.83 | 0.9 | 1 | 1.1 | ||
GB/T 893 is a Chinese national standard specifying Circlips for Shafts (commonly called shaft shoulder circlips or C-type retaining rings), belonging to the category of elastic fasteners.
In terms of properties, it has a C-shaped open ring structure without threads. Its key dimensions include inner diameter (matching shaft diameter), outer diameter (blocking components) and thickness (determining strength). It is usually made of 65Mn spring steel (after heat treatment) or stainless steel, with galvanized/passivated surface, complying with mechanical standards for elasticity and hardness.
Its features are compact structure—it can be snapped into the shaft’s annular groove through the opening without extra tools for quick axial positioning of on-shaft components; after installation, it is fixed by its own elasticity, offering strong anti-loosening performance, and is easy to disassemble without damaging the shaft.
It is mainly used in motors, automobile gearboxes, home appliances (e.g., washing machine bearings) and mechanical transmission parts to limit axial movement of bearings, gears, bushings, etc. It replaces traditional nuts for positioning, saves installation space, and is suitable for medium and light load working conditions.
| Nominal Diameter | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | ||
| d | |||||||||||||||||
| s | max | 0.8 | 0.8 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |
| min | 0.75 | 0.75 | 0.94 | 0.94 | 0.94 | 0.94 | 0.94 | 0.94 | 0.94 | 0.94 | 0.94 | 0.94 | 0.94 | 0.94 | 0.94 | ||
| dc | Nominal Size | 8.7 | 9.8 | 10.8 | 11.8 | 13 | 14.1 | 15.1 | 16.2 | 17.3 | 18.3 | 19.5 | 20.5 | 21.5 | 22.5 | 23.5 | |
| max | 9.06 | 10.16 | 11.16 | 12.16 | 13.36 | 14.46 | 15.46 | 16.56 | 17.66 | 18.72 | 19.92 | 20.92 | 21.92 | 22.92 | 23.92 | ||
| min | 8.6 | 9.7 | 10.7 | 11.7 | 12.9 | 14 | 15 | 16.1 | 17.2 | 18.17 | 19.37 | 20.37 | 21.37 | 22.37 | 23.37 | ||
| a | max | 2.4 | 2.5 | 3.2 | 3.3 | 3.4 | 3.6 | 3.7 | 3.7 | 3.8 | 3.9 | 4.1 | 4.1 | 4.2 | 4.2 | 4.2 | |
| b | ≈ | 1.1 | 1.3 | 1.4 | 1.5 | 1.7 | 1.8 | 1.9 | 2 | 2 | 2.1 | 2.2 | 2.2 | 2.3 | 2.4 | 2.5 | |
| d1 | min | 1 | 1 | 1.2 | 1.2 | 1.5 | 1.5 | 1.7 | 1.7 | 1.7 | 1.7 | 2 | 2 | 2 | 2 | 2 | |
| d2 ① | 3 | 3.3 | 3.7 | 4.1 | 4.9 | 5.4 | 6.2 | 7.2 | 8 | 8.8 | 9.4 | 10.4 | 11.2 | 12.2 | 13.2 | ||
| Installation tool specification | 1 | 1 | 1.5 | 1.5 | 1.5 | 1.5 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | ||
| per 1000 units ≈ kg | 0.14 | 0.15 | 0.18 | 0.31 | 0.37 | 0.42 | 0.52 | 0.56 | 0.6 | 0.65 | 0.74 | 0.83 | 0.9 | 1 | 1.1 | ||
