ETP Bushings & Posi Lock
ETP bushings and Posi Lock devices are keyless locking solutions that eliminate the need for traditional keyways in shaft-hub connections. Using advanced friction-based clamping technology, these innovative coupling devices provide secure, backlash-free connections with superior concentricity and easy installation.
Keyless Locking Technology: ETP Bushings & Posi Lock
Traditional shaft-hub connections rely on keys and keyways — a method that introduces several engineering challenges. Keyways create stress concentrations that can lead to fatigue failure, require high-precision machining, complicate assembly, and make accurate angular positioning difficult.
ETP bushings and Posi Lock devices offer a superior alternative. By using friction-based clamping mechanisms, these keyless locking devices create a secure, backlash-free connection with excellent concentricity. They eliminate the need for keyways entirely, solving the shortcomings of traditional key couplings.
These products are available in two primary mechanisms: hydraulic (using hydraulic pressure to expand the bushing) and mechanical (wedged) (using mechanical wedging action to create a friction fit). Both types offer the same core advantages: simple installation, compact design, lightweight construction, and easy removal.
Advantages of ETP & Posi Lock Bushings
Simple & Compact
The design is straightforward and occupies minimal space, making it suitable for applications where space is at a premium.
Lightweight
Compared to traditional keyed connections, ETP bushings offer significant weight savings without compromising strength.
Easy Assembly & Removal
Quick installation and removal significantly reduce maintenance time and equipment downtime. No special tools required.
Accurate Positioning
The friction-based design allows for precise angular positioning and indexing, essential for timing-critical applications.
No Stress Concentrations
By eliminating keyways, ETP bushings remove the stress concentration points that can lead to shaft failure under cyclic loading.
Reduced Machining
Eliminates the need for precision keyway machining, reducing manufacturing costs and lead times.
Posi Lock PSL-G Series: Specifications
The Posi Lock PSL-G series is a range of mechanical (wedged) locking devices engineered for reliable keyless shaft-hub connections. Available in diameters from 19mm to 45mm, these bushings are suitable for a wide range of industrial applications.
Common Applications
ETP bushings and Posi Lock devices are widely used in industries where precise, backlash-free shaft-hub connections are essential:
- ✓ Conveyor Systems
- ✓ Packaging Machinery
- ✓ Printing Presses
- ✓ Gearbox & Transmission Systems
- ✓ Servo & Stepper Motor Drives
- ✓ Textile Machinery
- ✓ Automation & Robotics
- ✓ Food Processing Equipment
- ✓ Material Handling Systems
Why Choose Golden Bearing Company
- ✓ Premium Quality Bushings
- ✓ Posi Lock Authorized Distributor
- ✓ 12+ Sizes Available
- ✓ Technical Selection Assistance
- ✓ Bulk Order Support
- ✓ OEM & MRO Support
- ✓ PAN India Delivery
- ✓ GST Tax Invoice
- ✓ Competitive Pricing
Quick Size Navigation
Browse our full range of Posi Lock PSL-G series bushings by bore diameter. Click on any size to view product details.
Click on any size to view product details, pricing, and availability.
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