Bending Guide
Press Brake Safety
A general-awareness overview of press brake hazards, guarding methods, and safe operating practice — not a substitute for training, a risk assessment, or the official standards.
This is educational content, not a safety manual. Press brakes are powerful machines capable of severe injury. Operation should always be governed by your machine manufacturer's documentation, a proper site-specific risk assessment, applicable legislation, and training from a qualified person. Nothing here replaces that.
Press brake regulations: UK and US
UK: the Provision and Use of Work Equipment Regulations 1998 (PUWER) set duties for safe equipment, guarding, maintenance and training. BS EN 12622 is a machinery safety standard for hydraulic press brakes, distinct from the legal duties under PUWER. Check the applicable edition and current standards status for the machine and its assessment.
US: OSHA has no press-brake-specific standard. Press brakes fall under general machine guarding 29 CFR 1910.212. The mechanical power press standard 1910.217 explicitly excludes press brakes in 1910.217(a)(5). ANSI B11.3 provides additional technical guidance for power press brakes; it is not itself an OSHA regulation.
Consult the PUWER legislation and OSHA’s 1910.212 guarding rule and 1910.217 scope alongside the machine documentation.
The main hazard: point of operation
The point of operation — where the punch closes against the die — is where the vast majority of press brake injuries happen. A hand, finger or sleeve caught there during the stroke can result in severe crushing injury in a fraction of a second, which is why guarding this zone is the central concern of every relevant standard.
Beyond the point of operation, other recognised hazard areas include the back of the machine (pinch points during ram movement), material handling (sharp sheared edges, weight of large sheets), noise exposure, and hydraulic system hazards during maintenance.
Press brake guarding methods
| Method | Purpose | Selection and limitations |
|---|---|---|
| Light curtains | Detect entry into a protective sensing field. | Require validated stopping performance and safety distance; blanking must not allow access to danger. |
| Laser AOPD guards | Monitor close to the moving punch. | Require compatible machine controls, tooling and validated setup; special modes need assessment. |
| Two-hand controls | Keep the operator’s hands on controls during the hazardous part of the cycle. | Do not protect helpers or other access points; work support and stopping capability matter. |
| Fixed / interlocked guards | Prevent access at sides, rear or other hazard zones. | Fixed guards need secure mounting; interlocks must prevent hazardous access and be checked. |
Read the press brake guarding guide for selection and limitations, and the press brake operator training guide for setup checks, isolation and supervised competence assessment. Training supports effective guarding; it cannot replace it.
General safe operating awareness
These are widely recognised good practices, not a complete or authoritative procedure — always follow your own site's documented procedure:
- Only trained, authorised operators should run the machine.
- Never bypass, remove or defeat a guard, light curtain or interlock for convenience or speed.
- Keep hands clear of the point of operation at all times during the stroke — use hand tools or fixtures for small or awkward parts rather than fingers.
- Be aware of the back of the machine and moving ram, not just the front working area.
- Check tooling is correctly seated and secured before starting a run.
- Follow lockout/tagout procedure fully before any maintenance, tooling change or clearing a jam.
- Wear the PPE specified for the task — commonly eye protection and gloves appropriate for material handling (not gloves that could get caught in moving parts near the point of operation).
- Know the location and operation of the emergency stop before starting work.
- Report any guard, sensor or control fault immediately and stop using the machine until it's resolved.
Planning a job? Check the tonnage first
Knowing the required force helps confirm you're within a safely rated machine's capacity before it's even set up.
Frequently asked questions
What is the main safety standard for press brakes?
In the UK, PUWER 1998 sets legal duties and BS EN 12622 addresses hydraulic press brake safety. In the US, OSHA 1910.212 governs general machine guarding; 1910.217 excludes press brakes. ANSI B11.3 provides technical guidance.
What is the biggest hazard on a press brake?
The point of operation, where the punch and die close together — it can cause severe crush injuries if a hand or finger is present during the stroke.
What guarding methods are used?
Fixed and adjustable physical guards, light curtains and laser-based AOPDs, and two-hand control stations are the most common, often combined based on a specific risk assessment.
Is this guide a substitute for formal safety training?
No. This is general educational content only. Operation should follow your machine's manual, a site-specific risk assessment, and applicable regulations, carried out only by trained, authorised operators.