Multiple different types of circlip retaining rings internal and external

Tapered Section Retaining Rings (Circlips)

Traditional retaining rings for high thrust loads and heavy-duty applications.

Tapered section ring circlip

Tapered Section Retaining Rings (Circlips)

Tapered Section Retaining Rings, commonly referred to as circlips or snap rings, are traditional retaining rings designed for high thrust loads and heavy-duty applications. Featuring a tapered radial wall, the ring's width decreases from the top toward the free ends, helping ensure nearly full contact with the groove when installed. Available in internal and external configurations, these retaining rings function as removable shoulders to securely retain components within an assembly. Their combination of strength, simplicity, and widespread industry use has made circlips one of the most familiar retaining ring styles used today. 

  • Designed for High Thrust Loads 
    Can withstand significant thrust loading in heavy-duty applications, ensuring secure retention in harsh environments. 
  • Tool-Assisted Installation and Removal 
    Designed for axial installation and removal using standard circlip pliers. 
  • Cost-Effective Solution 
    Economical retaining ring option available from stock. 
  • Manufactured to Industry Standards 
    Produced to tight tolerances and industry specifications for consistent performance. 
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Overview

Tapered Section Retaining Rings (Circlips) are among the most widely recognized retaining ring styles used across many industries. Through Smalley's partnership with Beneri, a leading Italian tapered section ring manufacturer since 1958, customers now have access to tapered section retaining rings alongside Smalley's Spirolox⁠® Retaining Rings and Constant Section Rings, all backed by the same quality and support they expect from Smalley. Also known as circlips or snap rings, tapered section retaining rings are designed for high thrust loads and heavy-duty applications. Their tapered radial wall profile narrows toward the free ends of the ring, a design characteristic that allows the ring to seat against the groove when installed. Available in internal designs for housing and bore grooves as well as external designs for shaft grooves, tapered section retaining rings function as removable shoulders that securely retain components within an assembly. 

Tapered Section Retaining Rings are available in Carbon Spring Steel SAE 1060/1074 and stocked at Smalley's facility for improved availability and ordering convenience. Installation and removal are accomplished using circlip pliers engaged in the ring's lug holes, making them a familiar solution for assembly and maintenance personnel. These retaining rings are commonly used in automotive and agricultural machinery, furniture hardware, and many other mechanical assemblies. Their combination of heavy-duty performance, industry-standard designs, and cost-effective availability continue to make tapered section retaining rings a trusted solution across a wide range of applications.

Tapered Section Retaining Ring Applications

Beneri circlips are trusted all over the world in various applications such as: 

  • Automotive and Agricultural Machinery (Engines, Transmission Components, Suspensions, Brakes) 
  • High-Temperature Machinery 
  • Naval Industry 
  • Furniture Industry 
  • Much more 

External tapered section ring secures a gear 

3D render of circlip retaining ring in gear application

3D render of internal circlip retaining ring in rotary union application

SMALLEY Rocker Arm 01

Quality

Smalley selected Beneri as its tapered section retaining ring partner because of their commitment to quality, consistency, and manufacturing excellence. Since 1958, Beneri has specialized in the production of tapered section retaining rings, supplying customers around the world with products manufactured to strict industry standards. 

All Beneri retaining rings are manufactured in Italy at their 12,500 m² facility, where tooling is designed and produced in-house. Their commitment to quality is supported by continual investment in manufacturing, research and development, and process improvement. Beneri is ISO 9001:2015 and IATF 16949 certified. View quality certifications. 

  • Over 60 Years of Manufacturing Experience 
    Specialized in tapered section retaining ring production since 1958. 
  • Manufactured to Industry Standards 
    Produced to DIN and ASME specification tolerances. 
  • 1.5 Billion Parts Shipped Annually 
    Trusted by customers around the world. 
  • Low Rejection Rate 
    Annual rejection rate of just 0.014%. 

Materials & Finishes

Tapered Section Retaining Rings are available in Carbon Spring Steel SAE 1060 and SAE 1074. Material availability varies by series and part number. 

Series 

SAE 1060 

SAE 1074 

RSHE 

RSHE-025 to RSHE-125 

RSHE-131 to RSHE-300 

RSSE 

RSSE-025 to RSSE-106 

RSSE-112 to RSSE-300 

RSHD 

RSHD-008 to RSHD-034 

RSHD-035 to RSHD-075 

RSSD 

RSSD-003 to RSSD-027 

RSSD-028 to RSSD-075 

Finish Code 

Description 

BO 

Burnished (deburred) and Oiled 

OP 

Oil & Phosphate per UNI/EN 12476 

End Configurations

 

 

Rshe 025 to rshe 125 rshd 008 to rshd 033
RSHE 131 to RHSE 300
All RSSE
RSSD 003 to RSSD 005
RSSD 050 to RSSD 075

Internal 

Internal 

External 

External 

External 

RSHE-025 to RSHE-125 

RSHD-008 to RSHD-033 

RSHE-131 to RHSE-300 

RSHD-034 to RSHD-075 

All RSSE 

RSSD-006 to RSSD-048 

RSSD-003 to RSSD-005 

RSSD-050 to RSSD-075 

 

RSSD 

RSHD 

RSSE 

RSHE 

Type 

Metric External 

Metric Internal 

Imperial External 

Imperial Internal 

Beneri Series 

DIN 471 

DIN 472 

2100 

2000  

Size Range 

3 - 75 mm 

8 - 75 mm  

0.25 - 3.00" 

0.25 - 2.95" 

Material 

Carbon Spring Steel SAE 1060/1074  

Carbon Spring Steel SAE 1060/1074  

Carbon Spring Steel SAE 1060/1074  

Carbon Spring Steel SAE 1060/1074  

Finishes 

Oil / Phos. & Oil 

Oil / Phos. & Oil 

Phos. & Oil 

Phos. & Oil 

Packaging

Packaging methods for Tapered Section Retaining Rings vary by ring size to help protect parts during shipment and handling. 

Packaging Code 

Size Range 

Packaging Type 

BX 

0.25 to 1.37" (3 to 35 mm) 

Bulk packaged in plastic bags 

TW 

1.43 to 2.43" (36 to 62 mm) 

Thermoplastic wrapped, non-oriented 

PR 

2.50 to 5.75" (63 to 148 mm) 

Rolled in paper wrappers 

Installation & Removal

Tapered Section Retaining Rings utilize lugs and lug holes to aid installation and removal with retaining ring pliers. During installation, ring expansion or contraction should be limited to help avoid deformation of the ring. Refer to the installation guides for detailed instructions on internal and external ring installation. 

DIN-471 External Rings

We recommend using pliers DIN 5254, which have stop and return screws to safely and gradually control ring expansion. 

DIN-472 Internal Rings

We recommend using pliers DIN 5256, which have stop and return screws to safely and gradually control ring contraction.

Retaining Ring Part Interchange Table

Use the Interchange Table below to identify the equivalent ring series. 

 

Smalley 

Beneri 

DIN 

Rotor Clip 

Waldes Truarc 

IRR 

Seeger 

Anderton 

MIL Standard 

RSSD 

DIN 471 

471 

DSH 

- 

- 

A 

D1400 

- 

RSHD 

DIN 472 

472 

DHO 

- 

- 

J 

D1300 

- 

RSSE 

2100-5100 

- 

SH 

5100 

3100 

- 

N1400 

*16624 

RSHE 

2000-5000 

- 

HO 

N5000 

3000 

- 

N1300 

*16625 

*Dimensional equivalence only. Please contact Smalley Engineering with any questions.

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