SCS14 Aluminum Shaft Collar – 14 mm Bore, M5 Screw, 35 mm OD, 5 mm Keyway
The SCS14 shaft collar represents a clear engineering upgrade. Three simultaneous improvements distinguish it: the outer diameter grows to 35 mm, the face width increases to 12 mm, and the clamping screw upgrades from M4 to M5. An M5 socket-head cap screw, tightened to rated torque, delivers approximately 60% more clamping force than an M4 — a meaningful step up for shafts that encounter start-stop torque cycles, belt tension side-loads, or dynamic axial thrust.
The 5 mm keyway, machined to DIN 6885A standard, matches the 5×5 parallel key used widely in European drive engineering. Together with M5 clamping force, the SCS14 serves as both an axial stop and a torque-transmitting hub retention device.
Technical Specifications – SCS14
| Parameter | Value | Notes |
|---|---|---|
| Model | SCS14 | Single-split clamp type |
| Bore (d) | 14 mm | Fits Ø14 shafts |
| Outer Diameter (D) | 35 mm | Wall thickness 10.5 mm per side |
| Width (B) | 12 mm | Axial face width |
| Clamping Screw | M5 | Countersunk socket-head cap screw |
| Slit Width (W) | 1.5 mm | Opening gap for shaft insertion |
| Keyway (K) | 5 | Standard; custom keyway on request |
| Material | Aluminium alloy | ~2.7 g/cm³, corrosion resistant |
Design Features and Performance Advantages
⚡ M5 Screw — 60% More Grip
Upgrade from M4 delivers significantly higher clamping force — essential for dynamic drive shaft applications with start-stop cycles.
📈 35mm OD Standard Bracket
SCS14/15/16 share 35mm OD: design one housing pocket for three shaft sizes in your modular machine platform.
⚙ 5mm DIN 6885A Keyway
Matches the 5×5 parallel key standard prevalent in European drive engineering.
🛠 12mm Face Width
20% wider face than SCS10/12 — larger contact area distributes axial load and reduces shaft surface stress.
Application Sectors
▶ Compact Gearbox Output Shaft Positioning
Many inline and right-angle gearboxes for conveyor and packaging machinery output on 14 mm shafts. The SCS14 fitted between the gearbox face and downstream coupling creates a fixed axial reference and prevents the coupling hub from migrating toward the gearbox oil seal under thrust reversals.
▶ Pneumatic Cylinder Guide Rod Stops
Double-acting pneumatic cylinders with external guide rods in the 14 mm range use the SCS14 as a repositionable end-stop. The M5 screw’s higher clamping force ensures the collar does not slip under impact load in high-cycle applications.
▶ Servo Motor Shaft End Retention
Servo motors with 14 mm output shafts are common in mid-range automation platforms. An SCS14 at the outboard bearing of the motor coupling prevents the coupling hub from walking toward the motor under thrust reversal, protecting the motor front bearing.
Installation and Mounting Notes
The SCS14 is the entry point into the 35 mm OD bracket shared by SCS14, SCS15, and SCS16. Designing around this external dimension gives machine builders a standardised housing bore of 35 mm accommodating three shaft sizes — 14, 15, and 16 mm — without retooling. When specifying the SCS14 for a dynamic drive application, verify the shaft has a mating DIN 6885A keyway. The combination of split-clamp friction and key shear provides redundant retention. Reach out via the EP contacts page for application-specific guidance.
Frequently Asked Questions – SCS14
Why does the clamping screw jump from M4 to M5 at the SCS14?
The 14 mm bore and 35 mm OD provide enough collar body volume to accommodate an M5 screw without the head protruding past the collar face. The larger screw also provides a proportionate increase in clamping torque that matches the higher radial loads expected on larger-bore collars.
Is the 5 mm keyway the same standard as used in European gearboxes?
Yes. Dimensioned to DIN 6885A (ISO 773) — the prevailing standard for parallel keys in European gearboxes. A standard 5×5 parallel key from any European or Asian industrial fastener supplier will fit correctly.
Can the SCS14 be used as a shaft coupling spacer between two shaft ends?
The SCS14 is an axial positioning collar, not a coupling. It is not designed to transmit torque between two separate shafts. For shaft-to-shaft coupling, contact EP for separate rigid and jaw coupling products.
What is the MOQ and can custom bore tolerances be specified?
MOQ is 100 pieces. Custom bore tolerances (H7, H6), surface finishes, and keyway tolerances are available — submit your drawing via the contacts page.
Order SCS14 Collars for Your Drive Assembly
MOQ 100 pcs | M5 clamping screw | 5mm keyway on request