Description
The 304 Stainless Steel GB893.1 C-Type External Retaining Ring is a precision-engineered fastener designed to lock components securely onto a shaft. By fitting into a pre-machined groove, this External Retaining Ring (also known as a circlip) creates a strong mechanical shoulder that prevents axial movement of gears, pulleys, or bearings.
Manufactured in accordance with the GB893.1 standard, these rings are crafted from high-quality 304 stainless steel, providing a robust alternative to standard lock washer or stainless steel washer solutions for lateral positioning. Their C-type design offers excellent elasticity, ensuring the ring snaps firmly into place and maintains constant pressure within the groove, even under high centrifugal forces or mechanical vibration.
Equipped with standard clamp holes, the GB893.1 External Retaining Ring enables fast and secure installation using snap ring pliers, improving assembly efficiency. As an essential element within professional fasteners systems, it ensures mechanical reliability in industrial, automotive, and equipment manufacturing applications.
Features & Benefits
- Premium 304 Stainless Steel Grade: Offers superior corrosion and oxidation resistance, ensuring a long service life and reliable performance in humid or mildly corrosive industrial environments without rusting.
- High Strength & Dimensional Stability: Each ring is precision-formed for high hardness and deformation resistance, providing reliable component retention and structural integrity under heavy axial loads.
- Easy Installation & Secure Fit: Featuring standard clamp holes (lug holes), these rings allow for rapid installation and removal using snap ring pliers, significantly reducing assembly time and preventing slippage during maintenance.
- Enhanced Fastening Performance: The rigid, thick ring body ensures a deep locking engagement, providing stable axial positioning and critical sealing support for rotating or moving mechanical components.
Specification
|
Specification -Φ |
Outside diameter -D |
Thickness -H |
Inner hole -d |
angle-a |
|
Φ8 |
8.64 |
0.56 |
1 |
45° |
|
Φ9 |
9.8 |
0.58 |
||
|
Φ10 |
11 |
0.74 |
1.5 |
|
|
Φ11 |
12 |
0.8 |
||
|
Φ12 |
13 |
0.9 |
||
|
Φ13 |
14.2 |
0.94 |
1.7 |
|
|
Φ14 |
15 |
1 |
||
|
Φ15 |
16.1 |
1 |
||
|
Φ16 |
17.4 |
1 |
||
|
Φ17 |
18.4 |
1 |
||
|
Φ18 |
19.4 |
1 |
||
|
Φ19 |
20.6 |
1 |
2 |
|
|
Φ20 |
21.36 |
1 |
||
|
Φ22 |
23.5 |
1 |
||
|
Φ24 |
25.9 |
1.2 |
||
|
Φ25 |
26.7 |
1.2 |
||
|
Φ26 |
27.64 |
1.2 |
||
|
Φ28 |
30.2 |
1.2 |
||
|
Φ30 |
32. 7 |
1.2 |
||
|
Φ32 |
34.3 |
1.2 |
2.5 |
|
|
Φ34 |
36.45 |
1.5 |
||
|
Φ35 |
37.35 |
1.5 |
||
|
Φ36 |
38.9 |
1.5 |
||
|
Φ37 |
39.8 |
1.5 |
||
|
Φ38 |
41.65 |
1.5 |
||
|
Φ39 |
42.6 |
1.5 |
||
|
Φ40 |
43.8 |
1.5 |
||
|
Φ42 |
45.6 |
1.5 |
3 |
|
|
Φ45 |
48.9 |
1.5 |
||
|
Φ47 |
51.5 |
1.5 |
||
|
Φ48 |
51.8 |
1.5 |
||
|
Φ50 |
53.6 |
2 |
||
|
Φ52 |
55.9 |
2 |
||
|
Φ55 |
59.1 |
2 |
||
|
Φ58 |
62.3 |
2 |
36° |
|
|
Φ60 |
64.5 |
2 |
||
|
Φ62 |
65.9 |
2 |
||
|
Φ65 |
69.3 |
2.5 |
||
|
Φ68 |
72.4 |
2.5 |
FAQ:
Q1: What is the main difference between an External Retaining Ring and a standard lock washer?
A: While a lock washer is used to create tension in a bolted joint, an External Retaining Ring is designed to sit in a shaft groove to act as a stop, preventing components from sliding off the shaft entirely.
Q2: Do I need special tools to install these rings?
A: Yes. For a secure fit and to avoid over-stretching the material, you should use standard retaining ring pliers (snap ring pliers). The standard clamp holes are specifically designed for these tools to make installation quick and safe.
Q3: How do I ensure I select the correct size?
A: The size of an external circlip is typically determined by the nominal diameter of the shaft it is intended to fit. Ensure your shaft groove is machined to the correct depth and width according to the GB893.1 standard for optimal performance.
Q4: Can it be reused after removal?
A: In most cases, yes. However, if the ring shows signs of deformation or fatigue, replacement is recommended to maintain safe retention performance.
