Custom shaft collars in 304, 316L, and 17-4PH, with other grades on request. Set screw, one-piece clamp, and two-piece clamp collars, bored to your shaft size in metric and inch, made to your drawing or sample.
Applications: Conveyors and Rollers, Packaging and Processing Machines, Pumps and Mixers, Linear Motion and Guide Rails.
One-piece set screw collars are named by the shaft bore. Outside diameter and width differ between makers, so these are sizes that several catalogues list for stainless. Any bore, outside diameter, and width is made to your shaft, and clamp-style collars are available too. Set screw size and position, keyway, and finish are set on your drawing.
| Bore | Outside Dia | Width |
|---|---|---|
| 20 mm | 32 mm | 14 mm |
| 1/2 in | 1 in | 7/16 in |
| 3/4 in | 1-1/4 in | 9/16 in |
| 1 in | 1-1/2 in | 5/8 in |
The holding power of a collar depends on the shaft size and condition, so state the axial load when you ask for a quote.
| Type | How It Grips | Best For |
|---|---|---|
| Set screw collar | A screw presses on the shaft | Light to average axial loads, at the lowest cost, with the shaft end open for assembly |
| One-piece clamp collar | A split ring is drawn tight around the shaft by a clamp screw | Higher holding power than a set screw, and no mark on the shaft |
| Two-piece clamp collar | Two halves joined by screws around the shaft | Fitting in the middle of a shaft, and shafts with a wider diameter variance |
| Flanged or stepped collar | A collar with a flange or a shoulder, made to drawing | Locating a part with a face, or carrying a bearing or a gear |
| Custom collar | Bore, keyway, cross holes, or mounting holes to drawing | Parts that a standard collar does not fit |
Send a drawing, a DXF file, or a sample. Our engineers review the dimensions and the tolerance before cutting metal, and we CNC machine the part ourselves, so you deal directly with the factory.
We bore and turn collars to your shaft size and tolerance, with the clamp slot and the screw holes made on the same part, so the collar seats square.
Salt, moisture, washdown chemicals, and load drive the choice between 304, 316L, and 17-4PH. We confirm the grade against your drawing before production, and tiered pricing is available on larger orders.
A set screw collar holds with a screw that bites the shaft. A clamp collar closes a split ring around the shaft. The clamp style holds more and does not mark the shaft, and the set screw style costs less.
Choose a one-piece collar when the shaft end is open, because it costs less. Choose a two-piece collar when the collar goes mid-shaft or the shaft end is closed. The holding power of the two is close.
The set screw may be softer than the shaft, the load may be higher than a set screw holds, or the bore may be too loose. A harder screw or a clamp collar usually fixes it.
Choose 316L where the collar sees salt, chlorides, or chloride-based cleaning chemicals, because it resists pitting better than 304. Choose 304 for indoor, dry, or mildly humid service, where it costs less.
A quote request needs the shaft diameter and tolerance, the type, the outside diameter and width, the grade, the axial load if it matters, and the quantity. A drawing or a sample speeds it up.
If you already have drawings, email them to [email protected].
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