DNV Aluminum Clamping Shaft Collar – One-Piece Rigid Locking Ring for Axle & Pulley Positioning

Factory direct | High-strength aluminum alloy | One-piece clamp design | Non-marring shaft engagement | 30mm bore | 2000 N·m torque | 3000 RPM | OEM/ODM/OBM

The Apexcoupling DNV series is a high-quality aluminum clamping shaft collar (one-piece rigid locking ring) designed for precise axial positioning of components on shafts. Featuring a one-piece clamp-style design, this collar distributes clamping force evenly around the shaft circumference – providing secure, vibration-resistant holding power without damaging the shaft surface. Manufactured from high-strength aluminum alloy, the DNV collar is lightweight yet durable, making it ideal for automation equipment, servo systems, packaging machinery, labeling/filling equipment, and precision positioning applications. The clamp-style mechanism ensures easy installation, adjustment, and removal – allowing for precise positioning of timing pulleys, bearings, gears, sprockets, and other shaft-mounted components.

✅ Secure clamping without shaft damage – ideal for positioning timing pulleys, bearings, and gears in automation and precision equipment.

Key Technical Specifications

🔧 Custom bore sizes, outer diameters, widths, and surface finishes available. Contact us with your specifications.

Product Structure

1. One-Piece Aluminum Body – High-strength aluminum alloy, precision-machined, anodized finish.

2. Clamping Slot – Single split design allows the collar to clamp evenly around the shaft.

3. Socket Head Cap Screw – High-strength clamping screw – when tightened, it compresses the collar around the shaft.

💡 How it works: The DNV shaft collar features a one-piece design with a single split and a clamping screw. When the screw is tightened, the split closes, creating uniform 360° clamping force around the shaft. This design ensures a dimensionally precise fit and very high retaining forces without damaging the shaft surface. Unlike set screw collars that create point-contact stress, the clamp-style collar distributes force evenly – preventing shaft marring and ensuring easy repositioning.

Product Features & Advantages

Common Applications

• Timing Pulley Positioning – Securely locates pulleys on shafts in conveyor and automation systems

• Bearing Retention – Fixes bearings in place on shafts inside speed reducers and gearboxes

• Axial Stops & Locators – Serves as mechanical stops for shaft-mounted components

• Gear & Sprocket Positioning – Locks gears and sprockets in precise axial positions

• Servo Systems – Positions components in high-precision servo drive systems

• Packaging Machinery – Locates rollers, pulleys, and guides in packaging equipment

• Labeling/Filling Equipment – Precise positioning of timing pulleys and components

• CNC Machinery – Axial positioning of tooling and drive components

• Robotics – Secures components on robotic actuator shafts

• Linear Motion Systems – Positions components on linear guide shafts

Why Choose Apex Coupling for DNV Shaft Collars?

FAQ

Q: What is a DNV clamping shaft collar?
A: The DNV is a one-piece clamp-style shaft collar made of aluminum alloy. It is used to secure and position components such as timing pulleys, bearings, gears, and sprockets on shafts. The clamp design provides uniform 360° holding force without damaging the shaft.

Q: What is the advantage of a clamp-style collar over a set screw collar?
A: Clamp-style collars distribute clamping force evenly around the entire shaft circumference, providing greater holding power and preventing shaft damage (marring, scoring). Set screw collars create point-contact stress that can damage shafts and make repositioning difficult.

Q: What material is used?
A: The DNV collar is made of high-strength aluminum alloy with an anodized surface treatment for corrosion resistance and durability.

Q: What is the standard bore size?
A: The standard bore size is 30 mm. Custom bore sizes are available on request.

Q: What is the torque and speed rating?
A: Rated torque is 2000 N·m and maximum speed is 3000 RPM.

Q: Does the collar damage the shaft?
A: No. The one-piece clamp design provides uniform clamping force around the shaft, preventing marring, scoring, or other damage. This allows for easy repositioning and adjustment.

Q: Is the collar easy to install?
A: Yes. Simply slide the collar onto the shaft, position it, and tighten the clamping screw – no special tools required.

Q: What are the common applications?
A: Timing pulley positioning, bearing retention, axial stops, gear and sprocket positioning, servo systems, packaging machinery, CNC equipment, and robotics.

Q: Can I get a custom collar?
A: Yes. We offer OEM, ODM, and OBM support – custom bore sizes, outer diameters, widths, and surface finishes available.

Request a Quote

Send us your required bore size, outer diameter, width, and application details. Our engineers will recommend the optimal model and provide a quotation within 24 hours.