RESOURCE HUB
Empower yourself with the knowledge to spec the right safety or holding solution—and keep your operation running smoothly.
From CAD models and catalogs to safety guides and FAQs, our resource hub gives you the tools to make confident, informed decisions. Need expert input? Our engineers are here to help. Whether you’re selecting a rod lock for a new design or ensuring compliance with safety standards, we’re happy to review your application and recommend the best fit.
AMLOK® Rod Locks
Power-Off Position and Hold for Cylinders and Guide Rails
When air or hydraulic pressure is lost, AMLOK rod locks engage automatically—clamping the shaft or cylinder rod with mechanical force to prevent movement. These devices are ideal for machine axis holding, load retention during maintenance, or controlling drift in vertically oriented systems.
Benefits
- Spring-engaged, pressure-released clamping
- Bi-directional holding force (no rod drift)
- Cylinder-mounted or stand-alone configurations
- Available for NFPA (inch) and ISO (metric) cylinder standards
- Fully sealed options for washdown or harsh environments
Product Categories
- RCH Series: Hydraulic rod locks for NFPA (inch) cylinders
- RCHX Series: Hydraulic rod locks for extreme conditions
- RLI Series: Pneumatic rod locks for ISO 15552 (metric) cylinders
- RLN Series: Pneumatic rod locks for NFPA (inch) cylinders
SITEMA® Safety Devices
Clamping for Gravity Fall Protection and OSHA Compliance
Unlike rod locks, SITEMA safety devices are designed for personal safety—engaging in the event of pressure loss or failure to catch a falling load. Used in applications where human safety is critical, they provide a mechanical backup to prevent catastrophic motion.
Benefits
- Power-off safety clamping for vertical loads
- Stops falling masses instantly on pressure loss
- No ratchets — full-stroke engagement anywhere on the rod
- TÜV-certified for OSHA and international safety compliance
- Available for harsh environments and specialty applications
Product Categories
- Safety Catchers: Lock on rod movement or pressure loss
- Safety Brakes: Compact units for dynamic braking of lighter loads
- Safety Locks: Secure loads in a static position over time
- Special Clamping Solutions: Extreme environments or oversized rods
Not Sure Which Solution You Need?
Rod Locks = Position holding and machine control | Safety Devices = Gravity fall arrest and personnel safety
Manufacture Success Blog
Rod Locks & Press Safety Featured Posts
SITEMA Satisfies OSHA Requirements
SITEMA safety catchers have been evaluated according to OSHA Directive CPL 02-01-043. OSHA has determined that the SITEMA safety catcher meets all of the requirements of the directive.
How to Replace AMLOK's RCH Hydraulic Rod Lock Seals…
A step-by-step guide shows how to replace the seals in an RCH Hydraulic Rod Lock unit from AMLOK.
Helping Spider-Man Reach New Heights with AMLOK Rod…
Spider-Man is now swinging all over the New York stage during his new Broadway production at Foxwoods…