Made in France 
Borrelly 360 Spiral Retaining Rings
Borrelly 360 multi-turn internal and external spiral retaining rings are made by coiling the ring from laminated flat wire with round edges.
Borrelly Spring Washers designs and manufactures retaining rings from 5 mm to 1000 mm diameter; 1 turn to 7 turns; Austenitic (AISI 301 – AISI 302 – AISI 316), Semi-austenitic (17-7 PH), Inconel, Hastelloy, CuBe2, Duplex, Super Duplex.
Our precision range includes 2 types of 360 retaining rings in stainless steel, for bores and shafts, meeting the MA4016 and MA4017 standards of the aeronautics industries.
Custom spiral retaining rings
Thanks to its extensive experience and technical expertise, our Engineering & Design Department can help you in the design, engineering, and manufacturing of custom spiral retaining rings meeting your technical requirements, whether you need prototypes, limited series retaining rings or large runs. Your own retaining rings can be made in a wide range of special alloys and finishes.
Technical description
Borrelly 360°® spiral retaining rings are a type of retaining rings coiled from flat wire.
Our multi-turn internal rings and external rings are meant to be axially installed onto a shaft or within a housing where they will act as an artificial shoulder. Designed to withstand medium to heavy loads, they are perfectly suited for any application where a 360° contact with a groove and shoulder of the assembling part is required. There are commonly used to secure components in place and support high pressures and rotational speeds in medium to heavy duty conditions.
Our spiral retaining rings for bores and shafts are available in variety of materials and finishes to meet any application requirements.
They are manufactured with a notch; this makes it extremely easy and quick to remove from a groove.
Compared to stamped retaining rings (circlips), the main advantages of the Borrelly 360°® retaining rings are:
- No tooling costs
- No assembly lugs
- A 360° retaining surface in multi-turn configurations
- Easy to install and remove
- Precision and custom design options
Borrelly 360°® spiral retaining rings were designed to provide easy installation and removal.
Manual, semi-automated or automated installation of a Borrelly 360°® retaining ring can be carried out using a simple assembly cone.
A standard screwdriver can be used to remove it from its groove (whereas a special plier is needed to remove a stamped circlip from a groove).
Borrelly 360°® retaining rings can be produced in a variety of materials, from standard carbon and stainless steels to high-performance alloys.
XC75 steel (1.1242)
Stainless steel:
- AISI 301 : 1.4310
- AISI 302 : 1.4310
- AISI 316 L : 1.4404
- AISI 316 TI : 1.4571
- 17-7PH : 1.4568
Special applications:
- CuBe2 : 2.1247
- INCONEL 718 : 2.4668
- INCONEL X750 : 2.4669
- INCONEL 625 : 2.4856
- Alloy A286 : 1.4980
- Uranus B6 (1.4539)
- Hastelloy C4
- Hastelloy C276 2.4819
- Alloy 20 CB3 (2.4660)
- NIMONIC 90 : 2.4969 ou 2.4632
- René 41 (2.4973)
- SAF 2507 (1.4410)
- SAF 2205 (1.4462)
Our Engineering & Design Department can help you choose the material best suited to your application.
Spiral retaining rings are commonly used across various industries, including in the automotive, aerospace, off-shore, medical and household appliances sectors to name a few. They can be found in many cases of applications, such as in bearing preloads, gear and pneumatic assemblies, slip and pneumatic clutches, axial piston pumps…
Borrelly 360 2-turn external retaining ring for shaft.
Borrelly 360 4-turn internal retaining ring for bore.
99.8 %
Compliance
96 %
Reliability
48 h
Service