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According to EN 292-2 movable safety guards must be equipped with an interlocking device, with or without guard locking. Here it must be ensured that - dangerous machine functions are stopped as soon as the safety guard is no longer in the closed position
- dangerous machine functions are not started when the movable safety guard is closed.
When the EUCHNER safety door bolts are opened intentionally, the actuator mounted on the handle is pulled out of the safety switch actuator head. The opening of the NC contacts in the safety switch fulfils the requirements of the safety standard given above and permits access to the protected space. In addition to the standard bolts, Euchner supplies bolts with escape release as per the EU Machinery directive. These bolts facilitate opening of the locked safety guard from within the danger area to allow operating personnel to escape and prevent them being accidentally locked in the danger area. In the past, the bolts for safety guards were commonly produced in internal company locksmiths' shops at considerable expense. However, today standard solutions are preferred for economic reasons, especially in the car industry. EUCHNER has responded to current customer demands with the introduction of the bolts for safety guards. |  |  | more information |
Standard bolts for safety guardsBolts for safety guards offer important advantages:- Bolts provide mechanical guard locking, i.e. the monitoring circuit cannot be opened unintentionally by moving the hinged door.
- Accidental stoppage of the machine is prevented
- The actuator is brought forward mechanically when inserted in the actuating head of the safety switch. In this way it is ensured that the actuator is correctly inserted in the head, even with incorrectly adjusted doors.
- Damage to the safety switch is prevented
- The actuator is protected
- If the safety doors are shaken, the force is transmitted to the mechanically strong bolt and not to the safety switch.
- Safety switches and actuators are thus protected against damage
- By using bolts, persons who must enter hazardous areas, e.g. for servicing and setup work, can protect themselves. By attaching one or more simple padlocks to the bolt in the open position, the movable safety guards cannot be closed and thus the dangerous states cannot be triggered.
- The operator is protected
- Standard aluminum profiles are frequently used for safety guards. The bolts are particularly easy to fit here.C
- Optimal adaptation of the bolts to the market standard
- Bolts are available for all EUCHNER safety switches
- Extensive product range
- Products refined in every detail
Bolt with escape release from the danger areaBolts with an escape release offer the following important advantages:- Bolts with an escape release allow the operator to open the closed safety guard from the danger area.
- Protection for the operator in an emergency.
If there is a risk that someone may be accidentally locked in an accessible danger area, the EU Machinery directive stipulates: "Machinery must be designed, constructed or fitted with a means of preventing an exposed person from being enclosed within it or, if that is impossible, with a means of summoning help. In the case of safety switches with a guard locking, the employers' liability insurance association recommends the use of a manually operated escape release in accordance with BGI 575. With the escape release, the guard-locking device can be disabled from the inside in case of danger. The escape release for the safety switch must be within easy reach inside the danger area and must be operable without the need for any other tools. Figure 1 shows a safety switch TZ... in combination with a bolt TZ-.F with escape release from the rear. With this combination, the escape release can be operated by means of a pushbutton (Figure 1, A) and a lever (Figure 1, B). With the pushbutton pulled out, the safety switch functions normally and the interlocking process can be triggered by the operator. If there is someone on the hazardous area and the door is accidentally closed and locked, the operator could be at serious risk. |  Fig. 1: Safety switch with bolt (rear view) | By pressing the pushbutton (escape release, Figure 2, 1), the person locked in can trigger the safety switch's mechanical release. The solenoid monitoring contacts are positively driven open. The safety circuit is interrupted and a command to stop the machine operation is triggered. A lever (Figure 2, 2) facilitates removal of the actuator from the safety switch so that the exit door can be opened from within the danger area. In order to prevent anyone being locked into the danger area, the following precautions can be taken when using the TZ-.F bolt. - Pushbutton with lock (Figure 1, A)
The pushbutton (escape release) on the safety switch can only be reset using the related key. The key is only to be accessible for authorized personnel. In this way misuse of the escape release is prevented. |  Fig. 2: Pushbutton and lever activated | The bolt tongue has a slot which holds up to three padlocks. When service work is being carried out, the doors cannot be locked thus the machine cannot be started by third parties. - Detent knob (figure 3, D)
Operators with a tendency to monitor the processes closely and on occasion enter the machine pose a high level of risk. In order to take positive action to prevent anyone locking themselves in a danger area, the actuator can only be inserted in the safety switch from the outside while pulling the detent knob. |  Fig. 3: Padlock and detent knob |
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Housing Material: Plastic Housing | Bolt NZ-GFK for safety switch NZ.VZ |
- Material: reinforced plastic
- For right or left hinged doors
Features- Easily fitted to standard aluminum profiles and machine covers with screw connection
- Distinctive yellow color for easy recognition
- Robust version for heavy doors
- No additional door handle necessary
- Slot on the bolt permits attachment of padlocks
Notes- Functions only in conjunction with switch bracket NZ-GFK
- actuator included
- Order safety switch separately
- Order switch bracket separately
Order numbers: | Bolt for safety switches NZ.VZ |
| Bolt NZ-GFK-F with escape release for safety switch NZ.VZ |
- Material: reinforced plastic
- Lever for escape release from the danger area
- Bolt with detent knob
- For right or left hinged doors
Special features- Bolt with detent mechanism (only bolts with escape release) Bolt latches in open position to prevent unintended closing
Features- Easily fitted to standard aluminum profiles and machine covers with screw connection
- Distinctive yellow color for easy recognition
- Robust version for heavy doors
- No additional door handle necessary
- Slot on the bolt permits attachment of padlocks
Notes- Functions only in conjunction with switch bracket NZ-GFK
- actuator included
- Order safety switch separately
- Order switch bracket separately
Order numbers: | Bolt for safety switches NZ.VZ |
| Bolt TP-GFK-F with escape release for safety switches TP and GP |
- Material: reinforced plastic
- Lever for escape release from the danger area
- For left or right hinged doors
Special features- Bolt with detent mechanism: The bolt latches in open position to prevent unintended closing
Features- Easily fitted to standard aluminum profiles and machine covers with screw connection
- Distinctive yellow color for easy recognition
- Robust version for heavy doors
- No additional door handle necessary
- Slot on the bolt permits attachment of padlocks
Notes- Functions only in conjunction with switch bracket TP-GFK
- actuator included
- Order safety switch separately
- Order switch bracket separately
Order numbers: | Bolt for safety switches TP and GP |
| Bolt TP-GFK for safety switches TP and GP |
- Material: reinforced plastic
- For left or right hinged doors
Features- Easily fitted to standard aluminum profiles and machine covers with screw connection
- Distinctive yellow color for easy recognition
- Robust version for heavy doors
- No additional door handle necessary
- Slot on the bolt permits attachment of padlocks
Notes- Functions only in conjunction with switch bracket TP-GFK
- actuator included
- Order safety switch separately
- Order switch bracket separately
Order numbers: | Bolt for safety switches TP and GP |
| Bolt STP-GFK for safety switches STA, STP, SGP and SGA |
- Material: reinforced plastic
- For left or right hinged doors
Features- Easily fitted to standard aluminum profiles and machine covers with screw connection
- Distinctive yellow color for easy recognition
- Robust version for heavy doors
- No additional door handle necessary
- Slot on the bolt permits attachment of padlocks
Notes- Functions only in conjunction with switch bracket TP-GFK
- actuator included
- Order safety switch separately
- Order switch bracket separately
Order numbers: | Bolt for safety switches STA, STP, SGP and SGA |
Click on the product to view the available accessories! Housing Material: Plastic Housing | Bolt NZ-GFK for safety switch NZ.VZ |
Spare part - Replacement handle for EUCHNER bolts
| Bolt NZ-GFK-F with escape release for safety switch NZ.VZ |
Spare part - Replacement handle for EUCHNER bolts
| Bolt TP-GFK-F with escape release for safety switches TP and GP |
Fastening - Switch bracket TP-GFK
096 613 Switch bracket TP-GFK
Spare part - Replacement handle for EUCHNER bolts
| Bolt TP-GFK for safety switches TP and GP |
Fastening - Switch bracket TP-GFK
096 613 Switch bracket TP-GFK
Spare part - Replacement handle for EUCHNER bolts
| Bolt STP-GFK for safety switches STA, STP, SGP and SGA |
Fastening - Switch bracket TP-GFK
096 613 Switch bracket TP-GFK
Spare part - Replacement handle for EUCHNER bolts
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