PRODUCTS
CONTACT US
DGHC Aluminum Alloy Cross Slider Coupling – Short Clamping Type, Oldham Structure, Zero Backlash
Model Number
Check below, custom
D16-L29
D20-L33
D25-L39
D32-L45
D40-L50
D44-L46
D50-L53
D50-L58
D55-L57
D63-L71
D70-L77
- Phone : +86 13431039760
- Wechat : +86 13431039760
- Whatsapp : +86 13431039760
- Email : ella@apexcoupling.com
Product Description
DGHC Aluminum Alloy Cross Slider Coupling – Short Clamping Type, Oldham Structure, Zero Backlash
Factory direct | High-strength aluminum alloy hubs | Imported PA66 slider | Zero backlash | Short clamping design | 0.7–56 N·m torque | 0–9000 RPM | Clamping screw fastening | OEM/ODM/OBM
The Apexcoupling DGHC series is a high-performance cross slider coupling (Oldham type) engineered for precision power transmission in servo motor, stepper motor, and encoder applications. Featuring high-strength aluminum alloy hubs and an imported PA66 (polyacetal) slider, this coupling delivers zero backlash operation, excellent wear resistance, corrosion resistance, and electrical insulation. The sliding design effectively compensates for radial and angular misalignment, while the short clamping configuration provides low moment of inertia – ideal for high-speed, precision motion control systems. The detachable design and clamping screw fastening ensure easy installation and maintenance.
✅ Zero backlash, low inertia, and high precision – commonly used in servo motors, stepper motors, and encoders.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Brand | Apexcoupling |
| Model Series | DGHC (Cross Slider Coupling – Oldham Type, Clamping) |
| Also Known As | Oldham coupling, cross slide coupling, sliding disc coupling |
| Structure | Oldham type – two hubs + center slider |
| Hub Material | High-strength aluminum alloy |
| Slider Material | Imported PA66 (polyacetal / engineering plastic) – wear-resistant, corrosion-resistant, electrically insulating |
| Surface Treatment | Anodized (clear anodize) |
| Fastening Method | Clamping screw (keyway available) |
| Backlash | Zero (zero rotational clearance) |
| Misalignment Compensation | Radial and angular deviations |
| Inner Hole Diameter | 4 – 38 mm |
| Outer Diameter | 16 – 70 mm |
| Length | 29 – 77 mm (varies by model) |
| Allowable Torque Range | 0.7 – 56 N·m |
| Maximum Speed | 0 – 9000 RPM |
| Design | Detachable – easy installation and maintenance |
| Customized support | OEM, ODM, OBM |
| Applicable Industries | Manufacturing plants, machinery repair shops, food & beverage factories, farms, home use, retail, printing shops, construction works, energy & mining |
| Warranty | 1 Year |
| Place of Origin | Guangdong, China |
🔧 Custom bores, outer diameters, and special materials available. Contact us with your specifications.
DGHC Series – Model Range
| Model | d1,d2 (mm) | D (mm) | L (mm) | LF (mm) | LP (mm) | F (mm) | M |
|---|---|---|---|---|---|---|---|
| DGHC-16×29 | 4,5,6,6.35 | 16 | 29 | 12.5 | 12 | 3 | M2.5 |
| DGHC-20×33 | 5,6,6.35,7,8 | 20 | 33 | 14.1 | 12.7 | 3.8 | M2.5 |
| DGHC-25×39 | 5,6,6.35,7,8,9,9.525,10,11,12 | 25 | 39 | 16.9 | 17.7 | 3.9 | M3 |
| DGHC-32×45 | 5,6,8,9,9.525,10,11,12,12.7,14,15,16 | 32 | 45 | 20 | 20 | 4.5 | M4 |
| DGHC-40×50 | 8,9,9.525,10,11,12,14,15,16,17,18,19 | 40 | 50 | 23 | 20.3 | 5.5 | M5 |
| DGHC-44×46 | 8,9,9.525,10,11,12,14,15,16,17,18,19,20,22 | 44 | 46 | 20.7 | 18.4 | 7 | M5 |
| DGHC-50×53 | 10,11,12,12.7,14,15,16,17,18,19,20,22,24 | 50 | 53 | 24.2 | 22.35 | 7.5 | M6 |
| DGHC-50×58 | 10,11,12,12.7,14,15,16,17,18,19,20,22,24 | 50 | 58 | 26.5 | 22.35 | 6.3 | M6 |
| DGHC-55×57 | 10,11,12,12.7,14,15,16,17,18,19,20,22,24,25 | 55 | 57 | 31 | 17 | 6.3 | M6 |
| DGHC-63×71 | 14,15,16,17,18,19,20,22,24,25,28,30,32 | 63 | 71 | 32.8 | 26.2 | 7.8 | M8 |
| DGHC-70×77 | 14,15,16,17,18,19,20,22,24,25,28,30,32,35,38 | 70 | 77 | 32 | 25 | 7.7 | M8 |
Product Structure
Two Aluminum Hubs – High-strength aluminum alloy, precision-machined with axial grooves, anodized finish.
Center Cross Slider – Imported PA66 (polyacetal) engineering plastic, with matching slots at 90°.
Clamping Screws – Secure shaft fastening with clamping hub design – provides even clamping force without damaging shafts.
💡 How it works: The two hubs have axial grooves on their inner faces. The center slider has matching slots at 90° on each side. As the coupling rotates, the slider slides within the grooves, accommodating radial and angular misalignment while transmitting torque with zero backlash.
Product Features & Advantages
| Advantage | Benefit |
|---|---|
| Zero Backlash Operation | No rotational clearance – accurate position feedback for servo motors, encoders, and stepper motors |
| High-Strength Aluminum Alloy Hubs | Lightweight, low inertia, corrosion-resistant – ideal for high-speed applications (up to 9000 RPM) |
| Imported PA66 Slider | Excellent wear resistance, corrosion resistance, and electrical insulation – long service life |
| Short Clamping Design | Low moment of inertia – rapid acceleration and deceleration |
| Sliding Misalignment Compensation | Effectively compensates radial and angular deviations – protects bearings and seals |
| Detachable Design | Easy installation and maintenance – no need to move connected shafts |
| Clamping Screw Fastening | Secure shaft locking, even clamping force, easy adjustment – does not damage shafts |
| Keyway Option | Keyway available for high-torque applications |
| Wide Model Range | 11 models covering 4–38mm bores, 16–70mm outer diameters |
| Maintenance-Free | No lubrication required – reduces operating costs |
| OEM Customization | Custom bores, outer diameters, and materials available |
Oldham Coupling – Why It’s Ideal for Servo Motors
Oldham couplings are widely used in servo-driven systems that require precise motion control and a low inertia, balanced design:
Zero backlash – Ensures accurate positioning for servo and stepper motors
High parallel misalignment capability – Accommodates significant lateral shaft offset
Electrical insulation – PA66 slider provides electrical isolation between shafts
Low inertia – Short clamping design enables rapid acceleration and deceleration
Vibration absorption – Reduces vibration transmission to sensitive components
Applications
Servo Motors – High-precision motion control, zero backlash requirement
Stepper Motors – Accurate positioning, no lost motion
Encoders – Precision position feedback, electrical isolation
Robotics – Joint drives, precision motion
XY Tables – Precision positioning systems
Measuring Instruments – High-accuracy measurement systems
Packaging Machinery – Registration and indexing systems
Printing Equipment – Register control, high-speed operation
Food & Beverage Processing – Hygienic, reliable drives
Textile Machinery – High-speed, precision drives
Why Choose Apex Coupling for DGHC Oldham Couplings?
| Advantage | Description |
|---|---|
| Factory Direct | Competitive B2B pricing – no middlemen |
| Premium Materials | Aluminum alloy hubs + imported PA66 slider – durable and reliable |
| Zero Backlash | Accurate position feedback – no lost motion |
| Short Clamping Design | Low inertia – ideal for high-speed applications |
| Wide Model Range | 11 models – covers most industrial shaft sizes |
| Easy Installation | Detachable design – no need to move connected shafts |
| OEM Customization | Custom bores, outer diameters, and materials available |
| ISO9001 Certified | Quality assured for international buyers |
FAQ
Q: What is a cross slider (Oldham) coupling?
A: An Oldham coupling consists of two aluminum hubs with axial grooves and a center slider with matching slots at 90°. It transmits torque while accommodating radial and angular misalignment through the sliding action of the center slider.
Q: What is the advantage of the short clamping design?
A: The short clamping design provides low moment of inertia, making it ideal for applications requiring rapid acceleration and deceleration, such as servo motors and high-speed positioning systems.
Q: What materials are used?
A: The hubs are made of high-strength aluminum alloy with anodized finish. The slider is made of imported PA66 (polyacetal) engineering plastic – offering excellent wear resistance, corrosion resistance, and electrical insulation.
Q: What misalignment can the coupling compensate for?
A: The sliding design effectively compensates for radial (eccentricity) and angular misalignment.
Q: Does the coupling have backlash?
A: No. The DGHC series features zero backlash with precision slider fit – ideal for servo systems and precision positioning.
Q: What is the torque and speed range?
A: Allowable torque range is 0.7–56 N·m and maximum speed is 9000 RPM. Specific ratings vary by model size.
Q: What is the clamping screw design?
A: The clamping screw design provides even clamping force around the shaft without damaging it – offering greater retention than set screw couplings.
Q: Is the coupling easy to install?
A: Yes. The detachable design allows for easy installation and maintenance without moving connected shafts.
Q: Does the coupling require lubrication?
A: No. The PA66 slider is self-lubricating – maintenance-free operation.
Q: Can I get a custom coupling?
A: Yes. We offer OEM, ODM, and OBM support – custom bores, outer diameters, and materials available.
Request a Quote
Send us your bore size, torque, speed, and application details. Our engineers will recommend the optimal model and provide a quotation within 24 hours.
DGHC coupling
aluminum Oldham coupling
cross slider coupling
zero backlash coupling
servo motor coupling
clamping Oldham coupling
PA66 slider coupling
DGHC Oldham type
Product Show
clamping Oldham coupling
