An Industry First! Only Available from Nexen!
NexSafe™ Functional Safety Certified Brakes
for Pneumatic Cylinders or Round Shafts and Rails
Increased Safety for Processes & Machines!

Rod Locks Designed and Built Specifically for Almost All Pneumatic Cylinders or Round Shafts and Rails
Precision holding with guide rod systems and NFPA or ISO Pneumatic Cylinders.
“The Intertek Functional Safety mark provides customers like Nexen a way to illustrate reduced hazards and risks to operating personnel, machinery, and surrounding environments at a time when they are facing increased demands around functional safety. We're pleased to grant Nexen with this certification, the first of its kind in North America, and look forward to continuing to work with them, and others, as they provide their industry with high-quality products, as well as peace of mind."
-Pierrick Balaire, Global Business Line Leader at Intertek.
Learn more by watching the video
A New Standard in Performance

Pneumatic Cylinder or Round Shaft and Rail Versions
With superior performance, these spring-engaged, air-released units supplement air cylinders and guide rods for holding in
power-off/e-stop situations. High clamping forces ensure positive holding with minimal air required for release.
Choose from our standard products, or we will work with you to meet your unique application specifications.
INDUSTRY 4.0 SOLUTION Nexen’s Rod Lock Operating Mode Sensors for either Engagement or Disengagement are Industry 4.0 compatible and can provide information to maximize machine efficiency. Having this information available aides with:
- Accurate Linear Positioning
- Predictive Maintenance
- Operational Feedback
“Fabco-Air has been using Nexen Rod Locks for many years on our pneumatic actuators and linear slides that we manufacture and we are very excited to be able to share with our customers that these Rod Locks are now safety certified which opens up new opportunities for us and our customers.”
— Cory Leavitt-Engineering Manager & Mike Bowers-Manufacturing Engineer Fabco-Air
- Need Assistance? Contact Customer Service at
- 800-843-7445 or send us a message
- Register your Nexen product
NFPA/Inch Rod Locks
Select Model Number for Details
Stand Alone Model |
Cylinder Mount Model |
Rod Diameter |
Bore Size (Cylinder Mount only) |
Holding Force |
---|---|---|---|---|
RLSSB 150-063-S |
RLSSB 150-063-C |
0.625 in | 1.500 in | 180 lbs |
RLSSB 200-063-S |
RLSSB 200-063-C |
0.625 in | 2.000 in | 314 lbs |
RLSSB 250-063-S |
RLSSB 250-063-C |
0.625 in | 2.500 in | 491 lbs |
RLSSB 200-100-S |
RLSSB 200-100-C |
1.000 in | 2.000 in | 250 lbs |
RLSSB 325-100-S |
RLSSB 325-100-C |
1.000 in | 3.250 in | 830 lbs |
RLSSB 400-100-S |
RLSSB 400-100-C |
1.000 in | 4.000 in | 1256 lbs |
RLSSB 500-100-S |
RLSSB 500-100-C |
1.000 in | 5.000 in | 1963 lbs |
RLSSB 400-138-S |
RLSSB 400-138-C |
1.375 in | 4.000 in | 1256 lbs |
RLSSB 500-138-S |
RLSSB 500-138-C |
1.375 in | 5.000 in | 1963 lbs |
RLSSB 600-138-S |
RLSSB 600-138-C |
1.375 in | 6.000 in | 2830 lbs |
ISO/Metric Rod Locks
Select Model Number for Details
Stand Alone Model |
Cylinder Mount Model |
Rod Diameter |
Bore Size (Cylinder Mount only) |
Holding Force |
---|---|---|---|---|
RLSSB 032-012-S |
RLSSB 032-012-C |
12 mm | 32 mm | 800 N |
RLSSB 040-016-S |
RLSSB 040-016-C |
16 mm | 40 mm | 890 N |
RLSSB 050-020-S |
RLSSB 050-020-C |
20 mm | 50 mm | 1400 N |
RLSSB 063-020-S |
RLSSB 063-020-C |
20 mm | 63 mm | 2225 N |
RLSSB 080-025-S |
RLSSB 080-025-C |
25 mm | 80 mm | 3560 N |
RLSSB 100-025-S |
RLSSB 100-025-C |
25 mm | 100 mm | 5500 N |
RLSSB 125-032-S |
RLSSB 125-032-C |
32 mm | 125 mm | 8560 N |