Finer Power shaft Collar, bore (inches) 1/4
Available
These are set screw shaft collars in imperial sizes FSC-1/4 to FSC-2, for shafts with a bore from 1/4 to 2" (6.35 to 50.8mm). A shaft collar is a ring-shaped component used as a mechanical stop, a locating component or a bearing face. The collar slides onto the shaft and is fastened in position with a grub screw.
These collars are made from cold drawn steel bar with a zinc plated finish.
Where this product is used
- Locating gears, sprockets, pulleys and bearings along a shaft
- Mechanical stops that limit the movement of a part or the shaft
- Bearing faces and spacers on shafts
- General machinery assembly and maintenance
Features
- Simple one-piece ring design that is easy to install
- Fastened to the shaft with a grub screw
- Steel construction with a zinc plated finish
- 17 imperial sizes, bores 1/4 to 2" (6.35 to 50.8mm)
- Outside diameter, width and mass for every size
Key specifications
| Specification | Detail |
|---|---|
| Sizes | FSC-1/4 to FSC-2 (17 models) |
| Type | Set screw (grub screw) shaft collar |
| Material | Steel, zinc plated |
| System | Imperial |
| Bore range | 1/4 to 2" (6.35 to 50.8mm) |
| Outside diameter | 0.5 to 3" |
| Width | 0.281 to 0.875" |
| Grub screw size | M4 x 4mm to M10 x 12mm |
| Approx. mass | 0.01 to 0.45kg |
| Bore tolerance | +0.0005 to +0.002" up to 1" bore |
| Width tolerance | +0.003 to -0.010" |
Sizes available
| Part number | Bore (inch) | Bore (mm) | O.D. (inch) | Width (inch) | Grub screw | Mass (kg) |
|---|---|---|---|---|---|---|
| FSC-1/4 | 1/4 | 6.35 | 0.5 | 0.281 | M4 x 4mm | 0.01 |
| FSC-5/16 | 5/16 | 7.94 | 0.625 | 0.308 | M4 x 4mm | 0.01 |
| FSC-3/8 | 3/8 | 9.52 | 0.75 | 0.375 | M6 x 5mm | 0.01 |
| FSC-1/2 | 1/2 | 12.7 | 1 | 0.438 | M6 x 5mm | 0.03 |
| FSC-5/8 | 5/8 | 15.88 | 1.125 | 0.5 | M6 x 6mm | 0.04 |
| FSC-3/4 | 3/4 | 19.05 | 1.25 | 0.563 | M6 x 6mm | 0.05 |
| FSC-7/8 | 7/8 | 22.22 | 1.5 | 0.563 | M6 x 6mm | 0.07 |
| FSC-1 | 1 | 25.4 | 1.625 | 0.625 | M6 x 6mm | 0.1 |
| FSC-1-1/8 | 1-1/8 | 28.57 | 1.75 | 0.625 | M8 x 6mm | 0.11 |
| FSC-1-1/4 | 1-1/4 | 31.75 | 2 | 0.688 | M8 x 8mm | 0.16 |
| FSC-1-3/8 | 1-3/8 | 34.92 | 2.125 | 0.75 | M8 x 8mm | 0.18 |
| FSC-1-7/16 | 1-7/16 | 36.51 | 2.25 | 0.75 | M8 x 8mm | 0.2 |
| FSC-1-1/2 | 1-1/2 | 38.1 | 2.25 | 0.75 | M8 x 8mm | 0.21 |
| FSC-1-5/8 | 1-5/8 | 41.27 | 2.5 | 0.813 | M8 x 8mm | 0.29 |
| FSC-1-3/4 | 1-3/4 | 44.45 | 2.75 | 0.875 | M10 x 12mm | 0.32 |
| FSC-1-7/8 | 1-7/8 | 47.62 | 2.75 | 0.875 | M10 x 12mm | 0.35 |
| FSC-2 | 2 | 50.8 | 3 | 0.875 | M10 x 12mm | 0.45 |
Choosing the right option
Choose the collar by shaft diameter. The bore tolerance is +0.0005 to +0.002" for bores up to 1", so the collar fits closely on a shaft of the nominal size.
The grub screw bites into the shaft, so a set screw collar is most effective on a shaft made of a softer material, and it can mark the shaft surface. Where the shaft must not be marked, use a clamp type collar: see Shaft Collar, One-Piece Split Clamp Type, Black Oxide Steel, Imperial, FSC-1/4-CL to FSC-2-CL or Shaft Collar, Two-Piece Split Clamp Type, Black Oxide Steel, Imperial, FSC-1/4-SP to FSC-2-SP.
Other set screw collars are on Shaft Collar, Zinc Plated Steel, Set Screw Type, Metric, FSC-6 to FSC-50, Shaft Collar, 304 Stainless Steel, Set Screw Type, Imperial, SSFSC-3/8 to SSFSC-2. and Shaft Collar, 304 Stainless Steel, Set Screw Type, Metric, SSFSC-10 to SSFSC-50.
Slide the collar onto the shaft, set its position and tighten the grub screw firmly. On machines that vibrate, check the grub screw regularly.
| Option | Part number | SKU |
|---|---|---|
| 1/4 | FSC-1/4 | A0126681 |
| 1/2 | FSC-1/2 | A0126684 |
| 1 | FSC-1 | A0126688 |
| 1-1/8 | FSC-1-1/8 | A0126689 |
| 1-1/4 | FSC-1-1/4 | A0126690 |
| 1-3/8 | FSC-1-3/8 | A0126691 |
| 1-7/16 | FSC-1-7/16 | A0126692 |
| 1-1/2 | FSC-1-1/2 | A0126693 |
| 1-5/8 | FSC-1-5/8 | A0126694 |
| 1-3/4 | FSC-1-3/4 | A0126695 |
| 1-7/8 | FSC-1-7/8 | A0126696 |
| 2 | FSC-2 | A0126697 |
| 3/8 | FSC-3/8 | A0126683 |
| 3/4 | FSC-3/4 | A0126686 |
| 5/16 | FSC-5/16 | A0126682 |
| 5/8 | FSC-5/8 | A0126685 |
| 7/8 | FSC-7/8 | A0126687 |
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Shaft Collar, Zinc Plated Steel, Set Screw Type, Imperial, FSC-1/4 to FSC-2: 1/4
SKU: A0126681 | Model: FSC-1/4
Finer Power FSC-1/4: shaft Collar, bore (inches) 1/4. Material: Steel, zinc plated. Bore (inch): 1/4.

