I am using this as a bowling ball drill bit stopper collar ring for Jo Po thumb inserts. I am using the 1” inside diameter stainless steel stop ring collar with a Jayhawk brand 1 1/2” bowling ball drill bit. The top part of the 1 1/2” drill bit is 1”. This 1” stop collar ring fits perfectly and uses a 6 point hex 3/16” bit to tighten or loosen the bolt. If you only have a hex set in mm units, you will not be able to tighten the bolts. I just so happens to have the 3/16” bit in a set that came with both mm and inch format multiple bits. The quality of the stainless steel is excellent. The screw in bolts work as should and make sure to screw in both evenly as this stop ring is made to leave a gap after fully tighten on. 1 inch diameter bit. I would suggest that the company leave a choice to the Amazon customer to choose between mm and inch format for the bolts. i feel this is the best out there in USA made quality. I used a digital caliper to measure 3.22” to the stop of the stop ring before tightening down the bolts. This is Jo Po recommended drilling depth for their outer sleeve ring. Make sure the drill press is precisely set at zero / zero using the thumb slug contoured cutting bit to calibrate the settings. Value for the money is on the higher side but at a few bucks more, I just bit the bullet so I didn’t have to worry about which ones to get. I rate this stainless steel 1” stop collar ring at 5 STARS and will update again later of needed.
Coastal Shaft Collars - 1.50" Bore Diameter - Clamping Two Piece Shaft Collar - 303 Stainless Steel (1 Pack)
4.4 | 235 ratings
Price: 16.35
Last update: 07-28-2024
About this item
These two-piece stainless steel split shaft collars have an inside diameter of 1.50 inches, an outside diameter of 2.375 inches and a thickness of 0.563 inches. This pack includes 1 split collar and its corresponding screws.
Made in the USA by Coastal Machine Works. We strive to deliver high quality and precise collars. Every collar has its edges and holes deburred and its corresponding inside diameter bore engraved on its front face for easy identification.
Made from 303 stainless steel, these shaft collars have excellent corrosion resistance and are ideal for wet environments or when corrosive chemicals are present.
The two-piece design makes installation simple. The split collar can be disassembled and reassembled anywhere along the shaft without needing to remove other components or having access to the ends of the shaft.
Strong, even clamping pressure around the shaft is created using the two included 1/4-28 x 5/8” stainless steel socket head screws. Compared to set screw style collars, the two-piece design has significantly higher clamping force and will not mar the shaft/pipe.
Made in the USA by Coastal Machine Works. We strive to deliver high quality and precise collars. Every collar has its edges and holes deburred and its corresponding inside diameter bore engraved on its front face for easy identification.
Made from 303 stainless steel, these shaft collars have excellent corrosion resistance and are ideal for wet environments or when corrosive chemicals are present.
The two-piece design makes installation simple. The split collar can be disassembled and reassembled anywhere along the shaft without needing to remove other components or having access to the ends of the shaft.
Strong, even clamping pressure around the shaft is created using the two included 1/4-28 x 5/8” stainless steel socket head screws. Compared to set screw style collars, the two-piece design has significantly higher clamping force and will not mar the shaft/pipe.
From the brand
Previous page
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I launched Coastal Shaft Collars in 2021 as a side hustle to my mechanical engineering job. Having used 1000’s of collars from foreign suppliers and being dissatisfied with the quality and price, I set out to produce collars domestically using high quality materials. Each collar is meticulously machined, deburred, washed, and engraved. My hope is that you enjoy the fit and finish of my collars as much as I enjoy making them.
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Small Business - American Made
All my collars are proudly made right here in the USA.
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Precision CNC Machined
High tolerances are achieved by machining the collars from a solid bar of metal using a CNC lathe.
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Accurate Splits
Using accurate fixtures, the collar splitting process yields consistent and accurate splits right down the middle.
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Top reviews from the United States
Triple Bogie
The stainless steel quality used for the stop collar is excellent but costly.
Reviewed in the United States on June 14, 2024VR4Given
Exactly what was needed.
Reviewed in the United States on March 14, 2024Scott Harlan
Lock collar
Reviewed in the United States on June 6, 2024DVS
Looks and works great!
Reviewed in the United States on April 26, 2024CMYK Josh
Great for improvising
Reviewed in the United States on April 1, 2023
CMYK Josh
Reviewed in the United States on April 1, 2023
Images in this review
JeepingBrad
Very nice and good quality but not quite "round"
Reviewed in the United States on October 4, 2023
JeepingBrad
Reviewed in the United States on October 4, 2023
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Alter Ego
Smaller than Described, Had to Return as a Result!
Reviewed in the United States on May 2, 2023
Alter Ego
Reviewed in the United States on May 2, 2023
I want to start this off in saying that the actual product is nice quality, seems to be polished but does have a slight metallic smell but since it isn't 316L Surgical Stainless that is to be expected. The edges were de-burred but having a square shape leads to sharp corners, especially when trying to install it. My other weight has a fixed pin with a simple allen wrench head that's a different size.
I measured the ID of my current weight and it was 33.1mm which is 1.303 decimal inch. This purchased collar has an oval rather than round bore. The last time I checked a bore is a circle. Using my digital micrometer I measured my current ring and it was perfectly round at 33.1mm. The 1-3/8" bore(1.375mm decimal inch) measured as follows(pictured):
top to bottom with bolts horizontal to surface: 1.18 decimal inch or 30mm
left to right with bolts horizontal to surface: 1.33 decimal inch or 33.8mm
Ordering these in 1.375 or 1-3/8 bore, one would expect them to be a larger ID than 33mm which would be 1.29921 decimal inch. However being oval or flattened slightly makes the overall ID smaller as well as the fact that the widest point was 1.143mm smaller than the described bore size of 1.375 decimal inches which is 34.925mm.
Here are those measurements all together for sizing from smallest to largest:
1.180in = 30.0mm (This item Top to Bottom)
1.303in = 33.1mm (My previously purchased donut ring at 33mm ID)
1.330in = 33.8mm (This item Left to Right)
1.375in = 34.925mm (This items size as Described)
1.143mm (This item was this much smaller than indicated just over 1/16th of an inch nearly 3/32)
For my purpose, I needed it to be exact and I had to return for this reason, I am deducting 2 ⭐'because the product was not as described but the overall quality was decent. If using for intended purpose, skin will impress and 1/16th likely won't matter much.
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Jon R
Quality product
Reviewed in the United States on July 24, 2024