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All Internal Circlips
Internal Circlip for 1.45 inch Bore Diameter Un-Sprung Diameter 1.616 inch
Imperial Internal Circlips: The most common form of axially fitted circlips for bores with pre-machined grooves.
These clips serve as retainers for items such as bearings where it may be [show more]...
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Bore: 36.98mm = 1.456 inch
Outside Diameter: 41.05mm = 1.616 inch
Material: Sprung Carbon Steel
Thickness: 1.27mm = 0.05 inch
Groove Diameter: 39.32mm = 1.548 inch
Circlip Pliers
Internal Circlip for 1.65 inch Bore Diameter Un-Sprung Diameter 1.835 inch
Imperial Internal Circlips: The most common form of axially fitted circlips for bores with pre-machined grooves.
These clips serve as retainers for items such as bearings where it may be [show more]...
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Bore: 41.99mm = 1.653 inch
Outside Diameter: 46.61mm = 1.835 inch
Material: Sprung Carbon Steel
Thickness: 1.57mm = 0.062 inch
Groove Diameter: 44.58mm = 1.755 inch
Circlip Pliers
Internal Circlip for 10 inch Bore Diameter Un-Sprung Diameter 10.920 inch
Imperial Internal Circlips: The most common form of axially fitted circlips for bores with pre-machined grooves.
These clips serve as retainers for items such as bearings where it may be [show more]...
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Bore: 254mm = 10 inch
Outside Diameter: 277.37mm = 10.92 inch
Material: Sprung Carbon Steel
Thickness: 4.76mm = 0.187 (3/16) inch
Groove Diameter: 265.43mm = 10.45 inch
Circlip Pliers
Internal Circlip for 2.87 inch Bore Diameter Un-Sprung Diameter 3.191 inch
Imperial Internal Circlips: The most common form of axially fitted circlips for bores with pre-machined grooves.
These clips serve as retainers for items such as bearings where it may be [show more]...
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Bore: 73.03mm = 2.875 (2-7/8) inch
Outside Diameter: 81.05mm = 3.191 inch
Material: Sprung Carbon Steel
Thickness: 2.36mm = 0.093 inch
Groove Diameter: 77.5mm = 3.051 inch
Circlip Pliers
Internal Circlip for 3.47 inch Bore Diameter Un-Sprung Diameter 3.857 inch
Imperial Internal Circlips: The most common form of axially fitted circlips for bores with pre-machined grooves.
These clips serve as retainers for items such as bearings where it may be [show more]...
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Bore: 88.11mm = 3.469 (3-15/32) inch
Outside Diameter: 97.97mm = 3.857 inch
Material: Sprung Carbon Steel
Thickness: 2.78mm = 0.109 (7/64) inch
Groove Diameter: 93.35mm = 3.675 inch
Circlip Pliers
Internal Circlip for 3.54 inch Bore Diameter Un-Sprung Diameter 3.936 inch
Imperial Internal Circlips: The most common form of axially fitted circlips for bores with pre-machined grooves.
These clips serve as retainers for items such as bearings where it may be [show more]...
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Bore: 89.99mm = 3.543 inch
Outside Diameter: 99.97mm = 3.936 inch
Material: Sprung Carbon Steel
Thickness: 2.78mm = 0.109 (7/64) inch
Groove Diameter: 95.91mm = 3.776 inch
Circlip Pliers
Internal Circlip for 3.62 inch Bore Diameter Un-Sprung Diameter 4.024 inch
Imperial Internal Circlips: The most common form of axially fitted circlips for bores with pre-machined grooves.
These clips serve as retainers for items such as bearings where it may be [show more]...
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Bore: 92.08mm = 3.625 (3-5/8) inch
Outside Diameter: 102.21mm = 4.024 inch
Material: Sprung Carbon Steel
Thickness: 2.78mm = 0.109 (7/64) inch
Groove Diameter: 97.56mm = 3.841 inch
Circlip Pliers
Internal Circlip for 3.75 inch Bore Diameter Un-Sprung Diameter 4.157 inch
Imperial Internal Circlips: The most common form of axially fitted circlips for bores with pre-machined grooves.
These clips serve as retainers for items such as bearings where it may be [show more]...
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Bore: 95.25mm = 3.75 (3-3/4) inch
Outside Diameter: 105.59mm = 4.157 inch
Material: Sprung Carbon Steel
Thickness: 2.78mm = 0.109 (7/64) inch
Groove Diameter: 100.94mm = 3.974 inch
Circlip Pliers
Internal Circlip for 3.87 inch Bore Diameter Un-Sprung Diameter 4.291 inch
Imperial Internal Circlips: The most common form of axially fitted circlips for bores with pre-machined grooves.
These clips serve as retainers for items such as bearings where it may be [show more]...
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Bore: 98.43mm = 3.875 (3-7/8) inch
Outside Diameter: 108.99mm = 4.291 inch
Material: Sprung Carbon Steel
Thickness: 2.78mm = 0.109 (7/64) inch
Groove Diameter: 104.32mm = 4.107 inch
Circlip Pliers
Internal Circlip for 3.93 inch Bore Diameter Un-Sprung Diameter 4.358 inch
Imperial Internal Circlips: The most common form of axially fitted circlips for bores with pre-machined grooves.
These clips serve as retainers for items such as bearings where it may be [show more]...
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Bore: 100.01mm = 3.938 (3-15/16) inch
Outside Diameter: 110.69mm = 4.358 inch
Material: Sprung Carbon Steel
Thickness: 2.78mm = 0.109 (7/64) inch
Groove Diameter: 106.02mm = 4.174 inch
Circlip Pliers
Internal Circlip for 4 inch Bore Diameter Un-Sprung Diameter 4.424 inch
Imperial Internal Circlips: The most common form of axially fitted circlips for bores with pre-machined grooves.
These clips serve as retainers for items such as bearings where it may be [show more]...
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Bore: 101.6mm = 4 inch
Outside Diameter: 112.37mm = 4.424 inch
Material: Sprung Carbon Steel
Thickness: 2.78mm = 0.109 (7/64) inch
Groove Diameter: 107.7mm = 4.24 inch
Circlip Pliers
Internal Circlip for 4.12 inch Bore Diameter Un-Sprung Diameter 4.558 inch
Imperial Internal Circlips: The most common form of axially fitted circlips for bores with pre-machined grooves.
These clips serve as retainers for items such as bearings where it may be [show more]...
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Bore: 104.78mm = 4.125 (4-1/8) inch
Outside Diameter: 115.77mm = 4.558 inch
Material: Sprung Carbon Steel
Thickness: 2.78mm = 0.109 (7/64) inch
Groove Diameter: 110.87mm = 4.365 inch
Circlip Pliers
Internal Circlip for 4.25 inch Bore Diameter Un-Sprung Diameter 4.691 inch
Imperial Internal Circlips: The most common form of axially fitted circlips for bores with pre-machined grooves.
These clips serve as retainers for items such as bearings where it may be [show more]...
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Bore: 104.78mm = 4.25 (4-1/8) inch
Outside Diameter: 119.15mm = 4.691 inch
Material: Sprung Carbon Steel
Thickness: 2.78mm = 0.109 (7/64) inch
Groove Diameter: 114.05mm = 4.49 inch
Circlip Pliers
Internal Circlip for 4.33 inch Bore Diameter Un-Sprung Diameter 4.756 inch
Imperial Internal Circlips: The most common form of axially fitted circlips for bores with pre-machined grooves.
These clips serve as retainers for items such as bearings where it may be [show more]...
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Bore: 110.01mm = 4.331 inch
Outside Diameter: 120.8mm = 4.756 inch
Material: Sprung Carbon Steel
Thickness: 2.78mm = 0.109 (7/64) inch
Groove Diameter: 116.1mm = 4.571 inch
Circlip Pliers
Internal Circlip for 4.50 inch Bore Diameter Un-Sprung Diameter 4.94 inch
Imperial Internal Circlips: The most common form of axially fitted circlips for bores with pre-machined grooves.
These clips serve as retainers for items such as bearings where it may be [show more]...
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Bore: 114.3mm = 4.5 (4-1/2) inch
Outside Diameter: 125.48mm = 4.94 inch
Material: Sprung Carbon Steel
Thickness: 2.78mm = 0.109 (7/64) inch
Groove Diameter: 120.4mm = 4.74 inch
Circlip Pliers
Internal Circlip for 4.62 inch Bore Diameter Un-Sprung Diameter 5.076 inch
Imperial Internal Circlips: The most common form of axially fitted circlips for bores with pre-machined grooves.
These clips serve as retainers for items such as bearings where it may be [show more]...
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Bore: 117.48mm = 4.625 (4-5/8) inch
Outside Diameter: 128.93mm = 5.076 inch
Material: Sprung Carbon Steel
Thickness: 2.78mm = 0.109 (7/64) inch
Groove Diameter: 123.57mm = 4.865 inch
Circlip Pliers
Internal Circlip for 4.75 inch Bore Diameter Un-Sprung Diameter 5.213 inch
Imperial Internal Circlips: The most common form of axially fitted circlips for bores with pre-machined grooves.
These clips serve as retainers for items such as bearings where it may be [show more]...
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Bore: 111.13mm = 4.75 (4-3/8) inch
Outside Diameter: 132.41mm = 5.213 inch
Material: Sprung Carbon Steel
Thickness: 2.78mm = 0.109 (7/64) inch
Groove Diameter: 126.87mm = 4.995 inch
Circlip Pliers
Internal Circlip for 5 inch Bore Diameter Un-Sprung Diameter 5.485 inch
Imperial Internal Circlips: The most common form of axially fitted circlips for bores with pre-machined grooves.
These clips serve as retainers for items such as bearings where it may be [show more]...
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Bore: 127mm = 5 inch
Outside Diameter: 139.32mm = 5.485 inch
Material: Sprung Carbon Steel
Thickness: 2.78mm = 0.109 (7/64) inch
Groove Diameter: 133.6mm = 5.26 inch
Circlip Pliers
Internal Circlip for 5.25 inch Bore Diameter Un-Sprung Diameter 5.770 inch
Imperial Internal Circlips: The most common form of axially fitted circlips for bores with pre-machined grooves.
These clips serve as retainers for items such as bearings where it may be [show more]...
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Bore: 133.35mm = 5.25 (5-1/4) inch
Outside Diameter: 146.56mm = 5.77 inch
Material: Sprung Carbon Steel
Thickness: 3.18mm = 0.125 (1/8) inch
Groove Diameter: 140.21mm = 5.52 inch
Circlip Pliers
Internal Circlip for 5.37 inch Bore Diameter Un-Sprung Diameter 5.910 inch
Imperial Internal Circlips: The most common form of axially fitted circlips for bores with pre-machined grooves.
These clips serve as retainers for items such as bearings where it may be [show more]...
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Bore: 136.53mm = 5.375 (5-3/8) inch
Outside Diameter: 150.11mm = 5.91 inch
Material: Sprung Carbon Steel
Thickness: 3.18mm = 0.125 (1/8) inch
Groove Diameter: 143.51mm = 5.65 inch
Circlip Pliers
Internal Circlip for 5.50 inch Bore Diameter Un-Sprung Diameter 6.066 inch
Imperial Internal Circlips: The most common form of axially fitted circlips for bores with pre-machined grooves.
These clips serve as retainers for items such as bearings where it may be [show more]...
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Bore: 139.7mm = 5.5 (5-1/2) inch
Outside Diameter: 154.08mm = 6.066 inch
Material: Sprung Carbon Steel
Thickness: 3.18mm = 0.125 (1/8) inch
Groove Diameter: 146.56mm = 5.77 inch
Circlip Pliers
Internal Circlip for 5.75 inch Bore Diameter Un-Sprung Diameter 6.336 inch
Imperial Internal Circlips: The most common form of axially fitted circlips for bores with pre-machined grooves.
These clips serve as retainers for items such as bearings where it may be [show more]...
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Bore: 146.05mm = 5.75 (5-3/4) inch
Outside Diameter: 160.93mm = 6.336 inch
Material: Sprung Carbon Steel
Thickness: 3.18mm = 0.125 (1/8) inch
Groove Diameter: 152.91mm = 6.02 inch
Circlip Pliers
Internal Circlip for 6 inch Bore Diameter Un-Sprung Diameter 6.620 inch
Imperial Internal Circlips: The most common form of axially fitted circlips for bores with pre-machined grooves.
These clips serve as retainers for items such as bearings where it may be [show more]...
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Bore: 152.4mm = 6 inch
Outside Diameter: 168.15mm = 6.62 inch
Material: Sprung Carbon Steel
Thickness: 3.18mm = 0.125 (1/8) inch
Groove Diameter: 159.26mm = 6.27 inch
Circlip Pliers
Internal Circlip for 6.25 inch Bore Diameter Un-Sprung Diameter 6.895 inch
Imperial Internal Circlips: The most common form of axially fitted circlips for bores with pre-machined grooves.
These clips serve as retainers for items such as bearings where it may be [show more]...
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Bore: 158.75mm = 6.25 (6-1/4) inch
Outside Diameter: 175.13mm = 6.895 inch
Material: Sprung Carbon Steel
Thickness: 3.97mm = 0.156 (5/32) inch
Groove Diameter: 165.86mm = 6.53 inch
Circlip Pliers
Internal Circlip for 6.50 inch Bore Diameter Un-Sprung Diameter 7.170 inch
Imperial Internal Circlips: The most common form of axially fitted circlips for bores with pre-machined grooves.
These clips serve as retainers for items such as bearings where it may be [show more]...
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Bore: 165.1mm = 6.5 (6-1/2) inch
Outside Diameter: 182.12mm = 7.17 inch
Material: Sprung Carbon Steel
Thickness: 3.97mm = 0.156 (5/32) inch
Groove Diameter: 172.47mm = 6.79 inch
Circlip Pliers
All Internal Circlips
At Simply Bearings, we are proud of our reputation as one of the UK's leading suppliers of new and replacement components for use across a huge variety of industrial, commercial and domestic applications. Our selection of internal circlips provides the extensive range of component sizes and options that we know you expect from us. They are stocked in our state-of-the-art warehouse with 20,000 sq. ft. of storage space, and we are absolutely confident that we can provide the precise part to meet your requirements.
Ubiquitous and essential components, circlips are a form of retaining ring consisting of a simple, partially flexible metal ring with open ends. Almost any operation involving a pivoting, turning or spinning part will rely on a circlip to fasten the assembly. They function as a load-bearing shoulder, holding mechanical parts in position. Therefore they are commonly found in pistons, turbines and motors.
Circlips are broken down into two main categories - internal and external. Both forms are usually manufactured from carbon spring steel or stainless steel to protect against corrosion, although other metals, such as copper, are used for specialist applications. The clip itself slots into a groove either on the exterior of a shaft or its interior bore, thus providing a constant radial force secured in spite of high-speed rotations due to the retainer groove.
Internal circlips are installed inside the bore of a cylindrical shaft and push outwards. Installation usually requires a special type of plier which attaches to holes in the ends of the clip, allowing the fitter to very easily squeeze and contract the clip to achieve sufficient clearance to position it effectively. This force generated by the spring tension of the clip is what allows them to fit so securely and reliably inside a cylindrical assembly. Importantly, the diameter and thickness of the clip affect the amount of spring pressure generated.
Our comprehensive stock of circlips covers diameters ranging from just 8mm and thicknesses of 0.8mm, all the way up to diameters of 300mm with thicknesses of 5mm. We offer a huge variety of dimensions in between these two extremes, so to make it easier for you to locate the precise technical specifications that you seek, please use the drop-down menus to specify your requirements.
As well as the diameter and thickness of the circlip, the amount of free space between the two open ends also affects the performance and suitability of the clip for particular applications. A high unstressed diameter and large gap width lead to clips which fit more snugly in the groove, generating higher and more uniform capacity for thrust load-bearing.