Shaft-Friendly Clamping
The split design closes around the shaft and avoids relying on a set screw bearing directly on one point of the shaft.
EP-SCS Series · 6 mm to 60 mm Bore
Aluminum Single Split Shaft Clamps for Precise Axial Positioning
Clamp-style aluminum shaft collars for guide-shaft stops, rotating-part location and adjustable machine positioning. Choose from eighteen metric bore sizes with optional keyway dimensions listed across most of the range.
18 bore sizesM4–M10 clamp screwsOptional keyway
Application visualizationWhy Clamp Style
Position Components Without a Point-Contact Set Screw
Adjustable Axial Location
Use one collar as a stop or two collars around a component where the axial position needs adjustment.
Optional Keyway
Keyway dimensions are listed for EP-SCS10 through EP-SCS60; standard collars are supplied without a keyway.
Live Catalogue
Popular EP-SCS Shaft Clamp Sizes
The homepage and Products page use the same WooCommerce records so model names, dimensions and links stay consistent.
Aluminum Single Split Shaft Clamp 18mm — EP-SCS18
EP-SCS18: 18 mm bore, 40 mm OD, 12 mm width, M5 clamp screw, split W 1.5 mm, keyway K 6 mm option.
Bore 18 mmOD 40 mmM5
Aluminum Single Split Shaft Clamp 20mm — EP-SCS20
EP-SCS20: 20 mm bore, 40 mm OD, 12 mm width, M5 clamp screw, split W 1.5 mm, keyway K 6 mm option.
Bore 20 mmOD 40 mmM5
Aluminum Single Split Shaft Clamp 22mm — EP-SCS22
EP-SCS22: 22 mm bore, 45 mm OD, 12 mm width, M5 clamp screw, split W 1.5 mm, keyway K 6 mm option.
Bore 22 mmOD 45 mmM5
Aluminum Single Split Shaft Clamp 6mm — EP-SCS06
EP-SCS06: 6 mm bore, 20 mm OD, 10 mm width, M4 clamp screw, split W 1 mm. No standard keyway K dimension…
Bore 6 mmOD 20 mmM4
Aluminum Single Split Shaft Clamp 25mm — EP-SCS25
EP-SCS25: 25 mm bore, 45 mm OD, 12 mm width, M5 clamp screw, split W 1.5 mm, keyway K 8 mm option.
Bore 25 mmOD 45 mmM5
Aluminum Single Split Shaft Clamp 8mm — EP-SCS08
EP-SCS08: 8 mm bore, 30 mm OD, 10 mm width, M4 clamp screw, split W 1.5 mm. No standard keyway K dimension…
Bore 8 mmOD 30 mmM4
Applications
Where Aluminum Shaft Clamps Fit Into Motion Systems
CNC & AutomationGuide-shaft stops, axial references and compact machine positioning.
Motors & DrivesLocation beside couplings, pulleys and other shaft-mounted components.
Robotics & 3D PrintingLightweight stops and locators on lead screws and guide shafts.
Industrial MachineryMechanical stops and component location in general machinery.Series Selection
Start With Shaft Diameter, Then Check the Envelope
Match the nominal bore to the shaft diameter, then confirm outside diameter, body width and clamp-screw access. If a keyway is required, use the listed K dimension as a starting point and include mating key details in the RFQ.
- Bore: 6–60 mm
- Outside diameter: 20–95 mm
- Width: 10–22 mm
- Clamp screws: M4 to M10 by model
Technical Reference
EP-SCS Series Size Chart
| Model | Bore d (mm) | OD D (mm) | Width B (mm) | Screw M | Split W (mm) | Keyway K (mm) |
|---|---|---|---|---|---|---|
| EP-SCS06 | 6 | 20 | 10 | M4 | 1 | — |
| EP-SCS08 | 8 | 30 | 10 | M4 | 1.5 | — |
| EP-SCS10 | 10 | 30 | 10 | M4 | 1.5 | 3 |
| EP-SCS12 | 12 | 30 | 10 | M4 | 1.5 | 4 |
| EP-SCS13 | 13 | 30 | 10 | M4 | 1.5 | 4 |
| EP-SCS14 | 14 | 35 | 12 | M5 | 1.5 | 5 |
| EP-SCS15 | 15 | 35 | 12 | M5 | 1.5 | 5 |
| EP-SCS16 | 16 | 35 | 12 | M5 | 1.5 | 5 |
| EP-SCS18 | 18 | 40 | 12 | M5 | 1.5 | 6 |
| EP-SCS20 | 20 | 40 | 12 | M5 | 1.5 | 6 |
| EP-SCS22 | 22 | 45 | 12 | M5 | 1.5 | 6 |
| EP-SCS25 | 25 | 45 | 12 | M5 | 1.5 | 8 |
| EP-SCS30 | 30 | 55 | 15 | M6 | 1.5 | 8 |
| EP-SCS35 | 35 | 60 | 15 | M6 | 2 | 10 |
| EP-SCS40 | 40 | 70 | 18 | M8 | 2 | 12 |
| EP-SCS45 | 45 | 80 | 22 | M10 | 2 | 14 |
| EP-SCS50 | 50 | 85 | 22 | M10 | 3 | 14 |
| EP-SCS60 | 60 | 95 | 22 | M10 | 3 | 18 |
Knowledge Base
Selection, Installation and Application Notes
OEM Shaft Clamp Ordering Guide
Prepare a custom RFQ with the dimensions and application details needed for review.
Read Article →6mm to 60mm Shaft Clamps: Choosing the Right Size
Navigate the EP-SCS bore range by shaft size, envelope and machine context.
Read Article →How to Reduce Shaft Damage With a Clamp Collar
Selection and installation practices that reduce avoidable shaft marking and fit problems.
Read Article →RFQ Support
Need a Standard Size, Keyway or Custom Bore Review?
Send shaft diameter, preferred EP-SCS model, quantity, keyway requirement and a drawing or photo when fit is tight.