Table of Contents
REF: Tools & Fasteners
REF: Retaining Ring Sizing Charts
Retaining Rings work by creating a shoulder that can hold components in place. The retaining shoulder is created when the ring attaches itself to the bore or shaft, typically by snapping into a groove. Ordinarily (however not always) a groove is dug into the shaft or bore, and this groove becomes the seat for the retaining ring. Retaining rings are designed such that their contact diameter has some interference fit with the groove in which they fit. This creates a “snug” fit between the ring and groove. The term used to describe the amount of interference fit is “cling”.
Cling causes the retaining ring to fit tightly and securely against its groove bottom. Without cling a ring would have a loose fit and would “rattle” in its groove. This lack of cling would decrease the retention capacity of the ring because a “cling-less” ring is free to move radially, creating weak retention points that will ultimately cause the assembly to fail. Another key factor is the width of the groove. The groove width is slightly larger than the rings thickness, thus creating a snug axial fit. The tight axial fit along with the cling to the groove bottom creates a rigid shoulder which can retain thrust loads. 1)
The phrase “Retaining Ring” is sort of vague and refers broadly over several different types of retaining fasteners. Some names used include: snap rings, wire rings, circlips, lock rings, retainer clips, retainer rings among others. For our purposes, Internal or External are the main words to remember since the rings are machined different for both types of use. Rings for bores are referred to as internal retaining rings, because the ring fits inside a hole (or bore). Similarly rings that fit over shafts are referred to as external retaining rings, because the are installed on the outside (or external) side of a shaft.
Choosing what size retaining ring to buy can be challenging with all the different types and material construction. Mainly, you choose a ring based on the diameter of the housing or shaft. The groove sizes are also shown below but, in general, the piece you are working on should be sized to standard groove dimensions. However, there may be instances where special considerations were made from standards. In addition, retaining rings are made to many standards such as inch, DIN, ANSI METRIC, and JIS.
- Decide whether the ring installation is for internal or external applications. This determines ring sizing also.
- Measure the shaft (external) or bore (internal) and choose the ring sized accordingly.
- Be sure to measure the groove diameter also to make sure that ring will sit properly in it.
The ring should be snug but too tight and it will stretch beyond what it was made to handle.
Some rings are made for shallow grooves and some are made for deeper grooves.
Circlips that wrap around the shaft (axial) require less groove depth than “C” or “E” clips (radial). - Most rings have tolerances for installation depending on what size and type of ring it is.
You can download the full PDFs of the charts below or go to their websites to see all the specs.
External Circlips
External Snap rings are axial retaining rings and are installed into a groove in a shaft or bore along an axis center point.
The rings have lugs and lug holes that are used for installation. Once installed, they contact virtually the entire groove.
They transmit loads into the groove wall around most of the groove circumference, which lets them withstand significant thrust loadings. 2)
External retaining rings are sized more narrow in the charts than internal rings.
(due to them being spec'd by their inside diameter and meant to expand onto a groove on a shaft)
So comparing, measuring or ordering needs to be done in kind.
The chart below is a reprint from ARCONRING.com. Here is the link to the full PDF.
Some specs are left out for space. The chart below shows general sizing specs for Standard SAE External Circlips.
Check with the manufacturer for exact specs of the brand clips desired.
Standard SAE External Circlips | ||||||
ARCON Part# | Shaft Dia | Ring Groove | Ring Dia | |||
Fraction | Decimal | Dia | Width | Thick | Free Dia | |
1400-12 | 1/8“ | .125” | .117“ | .012” | .010“ | .112” |
1400-15 | 5/32“ | .156” | .146“ | .012” | .010“ | .142” |
1400-18 | 3/16“ | .188” | .175“ | .018” | .015“ | .168” |
1400-19 | (5mm) | .197“ | .185” | .018“ | .015” | .179“ |
1400-21 | 7/32” | .219“ | .205” | .018“ | .015” | .196“ |
1400-23 | 15/16” | .236“ | .222” | .018“ | .015” | .215“ |
1400-25 | 1/4 | .250” | .230“ | .029 | .025” | .225“ |
1400-27 | (7 mm) | .276” | .255“ | .029 | .025” | .250“ |
1400-28 | 9/32” | .281“ | .261” | .029 | .025“ | .256” |
1400-31 | 5/16“ | .312” | .290“ | .029 | .025” | .281“ |
1400-34 | 11/32” | .344“ | .321” | .029 | .025“ | .309” |
1400-35 | (9 mm) | .354“ | .330” | .029 | .025“ | .320” |
1400-37 | 3/8“ | .375” | .352“ | .029 | .025” | .338“ |
1400-39 | (10 mm) | .394” | .369“ | .029 | .025” | .354“ |
1400-40 | 13/32” | .406“ | .382” | .029 | .025“ | .366” |
1400-43 | 7/16“ | .438” | .412“ | .029 | .025” | .395“ |
1400-46 | 15/32” | .469“ | .443” | .029 | .025“ | .428” |
1400-50 | 1/2“ | .500” | .468“ | .039 | .035” | .461“ |
1400-55 | (14 mm) | .551” | .519“ | .039 | .035” | .509“ |
1400-56 | 9/16” | .562“ | .530” | .039 | .035“ | .521” |
1400-59 | 19/32“ | .594” | .559“ | .039” | .035“ | .550” |
1400-62 | 5/8“ | .625” | .588“ | .039” | .035“ | .579” |
1400-66 | (17 mm) | .669“ | .629” | .039“ | .035” | .621“ |
1400-66 | 43/64” | .672“ | .631” | .039“ | .035” | .621“ |
1400-68 | 11/16” | .688“ | .646” | .046“ | .042” | .635“ |
1400-75 | 3/4” | .750“ | .704” | .046“ | .042” | .693“ |
1400-78 | 25/32” | .781“ | .733” | .046“ | .042” | .722“ |
1400-81 | 13/16” | .812“ | .762” | .046“ | .042” | .751“ |
1400-87 | 7/8” | .875“ | .821” | .046“ | .042” | .810“ |
1400-93 | 15/16” | .938“ | .882” | .046“ | .042” | .867“ |
1400-98 | 63/64” | .984“ | .926” | .046“ | .042” | .910“ |
1400-100 | 1” | 1.000“ | .940” | .046“ | .042” | .925“ |
1400-102 | (26 mm) | 1.023” | .961“ | .046” | .042“ | .946” |
The chart below is a reprint from ARCONRING.com. Here is the link to the full PDF.
Some specs are left out for space. The chart below shows general sizing specs for Standard Metric External Circlips.
Check with the manufacturer for exact specs of the brand clips desired.
Standard Metric External Circlips | ||||||
ARCON Part# | Shaft Dia | Ring Groove | Ring Dia | |||
Dia | Width | Depth | Thick | Free Dia | ||
D1400-3 | 3 mm | 2.8 mm | .50 mm | .10 mm | .40 mm | 2.7 mm |
D1400-4 | 4 mm | 3.8 mm | .50 mm | .10 mm | .40 mm | 3.7 mm |
D1400-5 | 5 mm | 4.8 mm | .70 mm | .10 mm | .60 mm | 4.7 mm |
D1400-6 | 6 mm | 5.7 mm | .80 mm | .15 mm | .70 mm | 5.6 mm |
D1400-7 | 7 mm | 6.7 mm | .90 mm | .15 mm | .80 mm | 6.5 mm |
D1400-8 | 8 mm | 7.6 mm | .90 mm | .20 mm | .80 mm | 7.4 mm |
D1400- | 9 mm | 8.6 mm | 1.10 mm | .20 mm | 1.00 mm | 8.4 mm |
D1400-10 | 10 mm | 9.6 mm | 1.10 mm | .20 mm | 1.00 mm | 9.3 mm |
D1400-11 | 11 mm | 10.5 mm | 1.10 mm | .25 mm | 1.00 mm | 10.2 mm |
D1400-12 | 12 mm | 11.5 mm | 1.10 mm | .25 mm | 1.00 mm | 11.0 mm |
D1400-13 | 13 mm | 12.4 mm | 1.10 mm | .30 mm | 1.00 mm | 11.9 mm |
D1400-14 | 14 mm | 13.4 mm | 1.10 mm | .30 mm | 1.00 mm | 12.9 mm |
D1400-15 | 15 mm | 14.3 mm | 1.10 mm | .35 mm | 1.00 mm | 13.8 mm |
D1400-16 | 16 mm | 15.2 mm | 1.10 mm | .40 mm | 1.00 mm | 14.7 mm |
D1400-17 | 17 mm | 16.2 mm | 1.10 mm | .40 mm | 1.00 mm | 15.7 mm |
D1400-18 | 18 mm | 17.0 mm | 1.30 mm | .50 mm | 1.20 mm | 16.5 mm |
D1400-19 | 19 mm | 18.0 mm | 1.30 mm | .50 mm | 1.20 mm | 17.5 mm |
D1400-20 | 20 mm | 19.0 mm | 1.30 mm | .50 mm | 1.20 mm | 18.5 mm |
D1400-21 | 21 mm | 20.0 mm | 1.30 mm | .50 mm | 1.20 mm | 19.5 mm |
D1400-22 | 22 mm | 21.0 mm | 1.30 mm | .50 mm | 1.20 mm | 20.5 mm |
D1400-23 | 23 mm | 22.0 mm | 1.30 mm | .50 mm | 1.20 mm | 21.5 mm |
D1400-24 | 24 mm | 22.9 mm | 1.30 mm | .55 mm | 1.20 mm | 22.2 mm |
D1400-25 | 25 mm | 23.9 mm | 1.30 mm | .55 mm | 1.20 mm | 23.2 mm |
D1400-26 | 26 mm | 24.9 mm | 1.30 mm | .55 mm | 1.20 mm | 24.2 mm |
Internal Circlips
Internal retaining rings are sized wider in the charts than external rings due to them being spec'd by their outside diameter and meant to compress into a groove in a bore.
So comparing, measuring or ordering needs to be done in kind.
Standard SAE Internal Circlips | ||||||
Housing Bore Dia | Bore Groove Dia | Ring Dia | ||||
Fraction | Decimal | Millimeter | Dia | Width | Thickness | Free Dia |
1/4“ | .250” | - | .268“ | .018” | .015“ | .280” |
5/16“ | .312” | - | .330“ | .018” | .015“ | .346” |
3/8“ | .375” | - | .397“ | .029” | .025“ | .415” |
7/16“ | .438” | - | .461“ | .029” | .025“ | .482” |
29/64“ | .453” | - | .477“ | .029” | .025“ | .498” |
1/2“ | .500” | - | .530“ | .039” | .035“ | .548” |
– | .512“ | 13 mm | .542” | .039“ | .035” | .560“ |
9/16” | .562“ | - | .596” | .039“ | .035” | .620“ |
5/8” | .625“ | - | .665” | .039“ | .035” | .694“ |
11/16” | .688“ | - | .732” | .039“ | .035” | .763“ |
3/4” | .750“ | 19 mm | .796” | .039“ | .035” | .831“ |
– | .777” | 19.7 mm | .825“ | .046” | .042“ | .859” |
13/16“ | .812” | - | .862“ | .046” | .042“ | .901” |
– | .866“ | 22 mm | .920” | .046“ | .042” | .961“ |
7/8” | .875“ | - | .931” | .046“ | .042” | .971“ |
– | .901” | 22.9 | .959“ | .046” | .042“ | 1.000” |
15/16“ | .938” | - | 1.000“ | .046” | .042“ | 1.041” |
1“ | 1.000” | - | 1.066“ | .046” | .042“ | 1.111” |
– | 1.023“ | 26 mm | 1.091” | .046“ | .042” | 1.136“ |
The chart below is a reprint from ARCONRING.com. Here is the link to the full PDF.
Some specs are left out for space. The chart below shows general sizing specs for Standard Metric Internal Circlips.
Check with the manufacturer for exact specs of the brand clips desired.
Standard Metric Internal Circlips | |||||
ARCON Part# | Housing Bore Dia | Groove | Ring | ||
Dia | Width | Thickness | Free Diameter | ||
D1300-8 | 8mm | 8.4mm | .90mm | .80mm | 8.7mm |
D1300-9 | 9mm | 9.4mm | .90mm | .80mm | 9.8mm |
D1300-9.5 | 9.5mm | 9.9mm | 1.10mm | 1.00mm | 10.3mm |
D1300-10 | 10mm | 10.4mm | 1.10mm | 1.00mm | 10.8mm |
D1300-11 | 11mm | 11.4mm | 1.10mm | 1.00mm | 11.8mm |
D1300-12 | 12mm | 12.5mm | 1.10mm | 1.00mm | 13.0mm |
D1300-13 | 13mm | 13.6mm | 1.10mm | 1.00mm | 14.1mm |
D1300-14 | 14mm | 14.6mm | 1.10mm | 1.00mm | 15.1mm |
D1300-15 | 15mm | 15.7mm | 1.10mm | 1.00mm | 16.2mm |
D1300-16 | 16mm | 16.8mm | 1.10mm | 1.00mm | 17.3mm |
D1300-17 | 17mm | 17.8mm | 1.10mm | 1.00mm | 18.3mm |
D1300-18 | 18mm | 19.0mm | 1.10mm | 1.00mm | 19.5mm |
D1300-19 | 19mm | 20.0mm | 1.10mm | 1.00mm | 20.5mm |
D1300-20 | 20mm | 21.0mm | 1.10mm | 1.00mm | 21.5mm |
D1300-21 | 21mm | 22.0mm | 1.10mm | 1.00mm | 22.5mm |
D1300-22 | 22mm | 23.0mm | 1.10mm | 1.00mm | 23.5mm |
D1300-23 | 23mm | 24.1mm | 1.30mm | 1.20mm | 24.6mm |
D1300-24 | 24mm | 25.2mm | 1.30mm | 1.20mm | 25.9mm |
D1300-25 | 25mm | 26.2mm | 1.30mm | 1.20mm | 26.9mm |
D1300-26 | 26mm | 27.2mm | 1.30mm | 1.20mm | 27.9mm |
Constant Section Retaining Ring
(AKA, Eaton-style or horseshoe snap ring). 3) A Constant Section Retaining Ring (Snap Ring) is a retaining ring often specified for heavy-duty or impact loading applications. 4) It features a uniform, constant section. This means that the material used to make the ring is the same width at any point along the circumference of the ring. These can be bought from fastener companies in carbon steel as plain or with oil embedded.
SAE Constant Section Rings | ||||||||
Housing Bore Diameter | Groove Size | Ring Dimensions | ||||||
Fraction | Decimal | Millimeter | Dia | Width | Depth | Free Dia (outside) | Thickness | Free Gap |
1.125” | 1-1/8“ | 28.58 mm | 1.181” | .046“ +.003” -.000“ | .028” | 1.196“ | .042” | .375“ - .562” |
1.250“ | 1-1/4” | 31.75 mm | 1.310“ | .030” | 1.330“ | .042” | .375“ - .562” | |
1.375“ | 1-3/8” | 34.93 mm | 1.435“ | .030” | 1.460“ | .042” | 375“ - .562” | |
1.500“ | 1-1/2” | 38.10 mm | 1.580“ | .040” | 1.600“ | .042” | .375“ - .562” | |
1.625: | 1-5/8“ | 41.28 mm | 1.705” | .040“ | 1.725” | .042“ | .437” - .750“ | |
1.750” | 1-3/4“ | 44.45 mm | 1.830” | .040“ | 1.855” | .042“ | .437” - .750“ | |
1.875” | 1-7/8“ | 47.63 mm | 1.965” | .045“ | 1.990” | .042“ | .437” - .750“ | |
2.000” | 2“ | 50.80 mm | 2.090” | .045“ | 2.115” | .042“ | .437” - .750“ |
Bearing Snap Ring
The chart below is a reprint from ARCONRING.com. Here is the link to the full PDF.
Some specs are left out for space. The chart below shows general sizing specs for Bearing Retainer Rings.
Check with the manufacturer for exact specs of the brand clips desired.
This retainer ring below (when installed into a groove) is tough to remove. Normally a spreader tool is used to widen the ring to install it onto a groove of a shaft. The MoCo used one inside the swingarm as a bearing race spacer in the grooved area between the (Timkin) bearings. It is a “Constant Section Retaining Ring” of the “Bearing Snapring” variety with beefier dims than the ones below. There are no known pliers to compress the ring (used internally) due to it having no holes or slots for pliers to compress it.
So it was pried out with screwdrivers in a circle pattern to get the ring out of the groove in the pivot.
Used on 1982-2003 swingarms, all models.
This is the ring installed between the two inner bearing races (and inside the lockring).
It has no part number as it comes in a set with the bearings.
SAE Bearing Snap Rings | ||||||||
Shaft Diameter or Bearing Bore | Groove | Ring | Free Gap | |||||
Decimal | ≈Metric | Dia | Width | Depth | Dia | Width | Thickness | Min-Max |
.4724” | 12.00mm | .436“ | .046” +.003“ -.000” | .018“ | .421” | .062 ±.003“ | .042” | .062“ - .187” |
.5906“ | 15.00mm | .550” | .053“ | .020” | .538“ | .078” | .047“ | |
.6693” | 17.00mm | .629“ | +.004” -.000“ | .616” | ±.003“ | .078” - .218“ | ||
.7874” | 20.00mm | 0.731“ | .068” | .028“ | .710” | .093“ ±.003” | .062“ | |
.9843” | 25.00mm | .924“ | +.004” -.000“ | .030” | .910“ | .109” ±.003“ | .156” - .312“ | |
1.1811” | 30.00mm | 1.111“ | .085” +.004“ -.000” | .035“ | 1.093” | .125“ ±.005” | .075“ | |
1.3780” | 35.00mm | 1.288“ | .045” | 1.265“ | -.031” | .156“ | .250” - .406“ | |
1.5748” | 40.00mm | 1.465“ | .108” | .055“ | 1.452” | ±.005“ | .093” | |
1.7717“ | 45.00mm | 1.648” | +.005“ | .062” | 1.625“ | .188” | ||
1.9685“ | 50.00mm | 1.844” | -.000“ | 1.820” | ±.005“ | |||
2.1654” | 55.00mm | 2.015“ | .120” | .075“ | 1.995” | .218“ | .109” | .250“ - .468” |
2.3622“ | 60.00mm | 2.212” | +.005“ -.000” | 2.187“ | ||||
2.5591” | 65.00mm | 2.389“ | 2.359” | |||||
2.7559“ | 70.00mm | 2.586” | 2.556“ | .250” |
"C" Clips
The chart below is a reprint from ARCONRING.com. Here is the link to the full PDF.
Some specs are left out for space. The chart below shows general sizing specs for SAE C-clips. Check with the manufacturer for exact specs of the brand clips desired.
SAE C-Clips | ||||||||
ARCON Part# | Shaft Diameter | Groove | Ring | |||||
Frac. | Dec. | mm | Dia | Width | Thickness | Free O.D. | Free ID | |
1800-12 | 1/8“ | .125” | 3.2mm | .106“ | .020” | .015“ | .165” | .102“ |
1800-15 | 5/32” | .156“ | 4.0mm | .135” | .020“ | .015” | .205“ | .131” |
1800-18 | 3/16“ | .188” | 4.8mm | .165“ | .020” | .015“ | .244” | .161“ |
1800-21 | 7/32” | .219“ | 5.6mm | .193” | .029“ | .025” | .275“ | .187” |
1800-23 | 15/64“ | .236” | 6.0mm | .208“ | .029” | .025“ | .295” | .203“ |
1800-25 | 1/4” | .250“ | 6.4mm | .220” | .029“ | .025” | .311“ | .211” |
1800-28 | 9/32“ | .281” | 7.1mm | .247“ | .029” | .025“ | .346” | .242“ |
1800-31 | 5/16” | .312“ | 7.9mm | .276” | .029“ | .025” | .376“ | .270” |
1800-37 | 3/8“ | .375” | 9.5mm | .335“ | .029” | .025“ | .448” | .328“ |
1800-40 | 13/32” | .406“ | 10.3mm | .364” | .029“ | .025” | .486“ | .359” |
1800-43 | 7/16“ | .438” | 11.1mm | .393“ | .029” | .025“ | .517” | .386“ |
1800-50 | 1/2” | .500“ | 12.7mm | .450” | .039“ | .035” | .581“ | .441” |
1800-56 | 9/16“ | .562” | 14.3mm | .507“ | .039” | .035“ | .653” | .497“ |
1800-62 | 5/8” | .625“ | 15.9mm | .563” | .039“ | .035” | .715“ | .553” |
1800-68 | 11/16“ | .688” | 17.5mm | .619“ | .046” | .042“ | .784” | .612“ |
1800-75 | 3/4” | .750“ | 19.0mm | .676” | .046“ | .042” | .845“ | .665” |
1800-81 | 13/16“ | .812” | 20.6mm | .732“ | .046” | .042“ | .915” | .721“ |
1800-87 | 7/8” | .875“ | 22.2mm | .789” | .046“ | .042” | .991“ | .777” |
1800-93 | 15/16“ | .938” | 23.8mm | .843“ | .046” | .042“ | 1.058” | .830“ |
1800-100 | 1” | 1.000“ | 25.4mm | .900” | .046“ | .042” | 1.130“ | .887” |
1800-112 | 1-1/8“ | 1.125” | 28.6mm | 1.013“ | .056” | .050“ | 1.267” | .997“ |
The chart below is a reprint from ROTORCLIP.com. Here is the link to the full PDF.
Some specs are left out for space. The chart below shows general sizing specs for their (DC) Metric C-clips. Check with the manufacturer for exact specs of the brand clips desired.
Metric C-Clips (DC) | |||||||
Rotor Clip Part# | Shaft | Groove | Ring | ||||
Dia | Dia | Width | Depth | Thick | Free O.D. | Free ID | |
DC-3 | 3mm | 2.3mm | .44mm | .35mm | .40mm | 3.98mm | 2.18mm |
DC-4 | 4mm | 3.2mm | .44mm | .40mm | .40mm | 5.00mm | 3.00mm |
DC-5 | 5mm | 4.0mm | .64mm | .50mm | .60mm | 6.20mm | 3.80mm |
DC-6 | 6mm | 5.0mm | .74mm | .50mm | .70mm | 7.40mm | 4.80mm |
DC-7 | 7mm | 6.0mm | .85mm | .50mm | .80mm | 8.60mm | 5.80mm |
DC-8 | 8mm | 7.0mm | .85mm | .50mm | .80mm | 10.00mm | 6.80mm |
DC-9 | 9mm | 8.0mm | 1.10mm | .50mm | 1.00mm | 11.20mm | 7.80mm |
DC-10 | 10mm | 9.0mm | 1.10mm | .50mm | 1.00mm | 12.15mm | 8.75mm |
DC-11 | 11mm | 10.0mm | 1.10mm | .50mm | 1.00mm | 13.20mm | 9.65mm |
DC-12 | 12mm | 10.9mm | 1.10mm | .55mm | 1.00mm | 14.35mm | 10.55mm |
DC-13 | 13mm | 11.8mm | 1.10mm | .60mm | 1.00mm | 15.40mm | 11.40mm |
DC-14 | 14mm | 12.7mm | 1.10mm | .65mm | 1.00mm | 16.30mm | 12.30mm |
DC-15 | 15mm | 13.6mm | 1.10mm | .70mm | 1.00mm | 17.40mm | 13.20mm |
DC-16 | 16mm | 14.5mm | 1.10mm | .75mm | 1.00mm | 18.50mm | 14.10mm |
DC-17 | 17mm | 15.4mm | 1.10mm | .80mm | 1.00mm | 19.40mm | 14.90mm |
DC-18 | 18mm | 16.3mm | 1.30mm | .85mm | 1.20mm | 20.40mm | 15.80mm |
DC-19 | 19mm | 17.2mm | 1.30mm | .90mm | 1.20mm | 21.50mm | 16.70mm |
DC-20 | 20mm | 18.1mm | 1.30mm | .95mm | 1.20mm | 22.65mm | 17.55mm |
"E" Clips
The chart below is a reprint from ARCONRING.com. Here is the link to the full PDF.
Some specs are left out for space. The chart below shows general sizing specs for E-clips. Check with the manufacturer for exact specs of the brand clips desired.
SAE E-Clips | ||||||||
ARCON Part# | Shaft Diameter | Groove | Ring | |||||
Frac. | Dec. | mm | Dia | Width | Thickness | Free O.D. | Free ID | |
1500-4 | - | .040” | 1mm | .026“ | .012” | .010“ | .079” | .025“ |
1500-X6 | 1/16” | .062“ | 1.5mm | .052” | .012“ | .010” | .140“ | .051” |
1500-Y6 | 1/16“ | .062” | 1.6mm | .052“ | .023” | .020“ | .187” | .051“ |
1500-6 | 1/16” | .062“ | 1.5mm | .052” | .012“ | .010” | .156“ | .051” |
1500-X9 | 3/32“ | .094” | 2.4mm | .074“ | .020” | .015“ | .230” | .069“ |
1500-9 | 3/32” | .094“ | 2.4mm | .074” | .020“ | .015” | .187“ | .073” |
1500-X11 | 7/64“ | .110” | 2.8mm | .079“ | .020” | .015“ | .375” | .076“ |
1500-12 | 1/8” | .125“ | 3.2mm | .095” | .020“ | .015” | .230“ | .094” |
1500-X14 | 9/64“ | .140” | 3.6mm | .102“ | .020” | .015“ | .203” | .100“ |
1500-Y14 | 9/64” | .140“ | 3.6mm | .110” | .020“ | .015” | .250“ | .108” |
1500-14 | 9/64“ | .140” | 3.6mm | .105“ | .029” | .025“ | .270” | .102“ |
1500-15 | 5/32” | .156“ | 4.0mm | .116” | .029“ | .025” | .282“ | .114” |
1500-X17 | 11/64“ | .172” | 4.4mm | .127“ | .029” | .025“ | .312” | .125“ |
1500-X18 | 3/16” | .188“ | 4.8mm | .125” | .029“ | .025” | .375“ | .122” |
1500-18 | 3/16“ | .188” | 4.8mm | .147“ | .029” | .025“ | .335” | .145“ |
1500-X21 | 7/32” | .219“ | 5.6mm | .188” | .029“ | .025” | .437“ | .185” |
1500-25 | 1/4“ | .250” | 6.3mm | .210“ | .029” | .025“ | .527” | .207“ |
1500-X31 | 5/16” | .312“ | 7.9mm | .250” | .029“ | .025” | .500“ | .243” |
1500-37 | 3/8“ | .375” | 9.5mm | .303“ | .039” | .035“ | .660” | .300“ |
1500-43 | 7/16” | .438“ | 11.1mm | .343” | .039“ | .035” | .687“ | .337” |
1500-X43 | 7/16“ | .438” | 11.1mm | .380“ | .039” | .035“ | .600” | .375“ |
1500-50 | 1/2” | .500“ | 12.7mm | .396” | .046“ | .042” | .800“ | .392” |
1500-62 | 5/8“ | .625” | 15.9mm | .485“ | .046” | .042“ | .940” | .480“ |
1500-X74 | 3/4” | .744“ | 19.0mm | .625” | .056“ | .050” | 1.000“ | .616” |
1500-75 | 3/4“ | .750” | 19.0mm | .580“ | .056” | .050“ | 1.120” | .574“ |
1500-87 | 7/8” | .875“ | 22.2mm | .675” | .056“ | .050” | 1.300“ | .668” |
1500-X98 | 1“ | .984” | 25.0mm | .835“ | .056” | .050“ | 1.500” | .822“ |
1500-X118 | 13/16” | 1.188“ | 30.2mm | 1.079” | .068“ | .062” | 1.626“ | 1.066” |
1500-X137 | 13/8“ | 1.375” | 34.9mm | 1.230“ | .068” | .062“ | 1.875” | 1.213“ |
The chart below is a reprint from ARCONRING.com. Here is the link to the full PDF.
Some specs are left out for space. The chart below shows general sizing specs for E-clips. Check with the manufacturer for exact specs of the brand clips desired.
Metric E-Clips | ||||||
ARCON Part# | Shaft Diameter | Groove | Ring | |||
Dia | Width | Thickness | Free O.D. | Free ID | ||
D1500-.8 | 1.20mm | 0.8mm | .24mm | .20mm | 1.95mm | .58mm |
D1500-1.2 | 1.70mm | 1.2mm | .34mm | .30mm | 2.90mm | 1.01mm |
D1500-1.5 | 2.25mm | 1.5mm | .44mm | .40mm | 3.85mm | 1.28mm |
D1500-1.9 | 2.75mm | 1.9mm | .54mm | .50mm | 4.40mm | 1.61mm |
D1500-2.3 | 3.50mm | 2.3mm | .64mm | .60mm | 5.90mm | 1.94mm |
D1500-3.2 | 4.50mm | 3.2mm | .64mm | .60mm | 6.80mm | 2.70mm |
D1500-4 | 6.00mm | 4.0mm | .74mm | .70mm | 8.80mm | 3.34mm |
D1500-5 | 7.00mm | 5.0mm | .74mm | .70mm | 10.75mm | 4.11mm |
D1500-6 | 8.00mm | 6.0mm | .74mm | .70mm | 11.75mm | 5.26mm |
D1500-7 | 9.50mm | 7.0mm | .94mm | .90mm | 13.80mm | 5.84mm |
D1500-8 | 10.50mm | 8.0mm | 1.05mm | 1.00mm | 15.60mm | 6.52mm |
D1500-9 | 12.00mm | 9.0mm | 1.15mm | 1.10mm | 18.20mm | 7.63mm |
D1500-10 | 13.00mm | 10.0mm | 1.25mm | 1.20mm | 19.65mm | 8.32mm |
D1500-12 | 15.50mm | 12.0mm | 1.35mm | 1.30mm | 22.65mm | 10.45mm |
D1500-15 | 20.00mm | 15.0mm | 1.55mm | 1.50mm | 28.60mm | 12.61mm |
D1500-19 | 25.50mm | 19.0mm | 1.85mm | 1.75mm | 36.70mm | 15.92mm |
D1500-24 | 31.50mm | 24.0mm | 2.05mm | 2.00mm | 43.65mm | 21.88mm |
Heavy Duty "E" Clips
The chart below is a reprint from McMaster-Carr.com. Here is the link to their web page .
Some specs are left out for space. The chart below shows general sizing specs for Heavy E-clips.
Check with the manufacturer for exact specs of the brand clips desired.
Also known as reinforced E-style retaining rings, these rings are reinforced to withstand faster rotation than other side-mount retaining rings.
Heavy E-clips have the same dims (fit in the same grooves as standard E-clips) but have a larger OD.
The OD listed in part specs can be .040”-.080“ larger depending on installed vs uninstalled specs given (some list either / or, some both).
SAE Heavy Duty E-Clips | ||||
Shaft Size | Groove | Ring | ||
OD | Width | Installed OD | Thickness | |
3/32” | .074“ | .02” | .206“ | .015” |
1/8“ | .095” | .02“ | .27” | .015“ |
5/32” | .116“ | .029” | .335“ | .025” |
3/16“ | .147” | .029“ | .375” | .025“ |
7/32” | .188“ | .029” | .446“ | .025” |
1/4“ | .21” | .029“ | .516” | .025“ |
5/16” | .25“ | .029” | .588“ | .025” |
3/8“ | .303” | .039“ | .66” | .035“ |
7/16” | .343“ | .039” | .746“ | .035” |
1/2“ | .396” | .046“ | .81” | .042“ |
9/16” | .437“ | .046” | .87“ | .042” |
External Bowed Locking Ring
The chart below is a reprint from ROTORCLIP.COM. Here is the link to the full PDF.
Some specs are left out for space. The chart below shows general sizing specs for Bowed Retainer Clips.
Check with the manufacturer for exact specs of the brand clips desired.
External Bowed Locking Ring | ||||||||||||||||
Rotorclip Part# | Shaft Diameter | Groove Size | Ring Size | |||||||||||||
Diameter | Width | Depth | Length | Thickness | Bow Height | Gap | ||||||||||
Dec | Tol | Fract | OD | Tol | W | Tol | D | L | Tol | T | Tol | BH | Tol | Gap | Tol | |
EL-9 | .092“ | ± .002” | 3/32“ | .061” | ±.001“ | .035” | + .005“ - .000” | .016“ | .307” | ± .010“ | .010” | ± .001“ | .050” | ±.010“ | .063” | ± .004“ |
EL-12 | .125” | ± .002“ | 1/8” | .082“ | ± .0015” | .035“ | + .005” - .000“ | .021” | .307“ | ± .010” | .010“ | ± .001” | .050“ | ±.010” | .086“ | ± .004” |
EL-18 | .188“ | ± .003” | 3/16“ | .124” | ± .002“ | .045” | + .005“ - .000” | .032“ | .390” | ± .010“ | .015” | ± .002“ | .060” | ± .010“ | .130” | ± .005“ |
EL-25 | .250” | ± .003“ | 1/4” | .165“ | ± .002” | .055“ | + .005” - .000“ | .042” | .500“ | ± .010” | .015“ | ± .002” | .070“ | ± .010” | .172“ | ± .005” |
EL-31 | .312“ | ± .003” | 5/16“ | .228” | ± .003“ | .080” | + .005“ - .000” | .042“ | .620” | ± .010“ | .015” | ± .002“ | .095” | ± .010“ | .234” | ± .005“ |
EL-37 | 375” | ± .003“ | 3/8” | .270“ | ± .003” | .095“ | + .005” - .000“ | .052” | .740“ | ± .010” | .020“ | ± .002” | .130“ | ± .010” | .280“ | ± .005” |