Electromechanical Safety Gear

Bidirectional progressive safety gear

Progressive Type Safety Gears

Guide rail Brake for ascending car overspeed protection

Safety Clearance System for pit or headroom

Bi-directional progressive safety gear

One-Way Active Brake Pad for heavy duty applications

Unidirectional instantaneous safety gear

Unidirectional progressive safety gears for medium speed

Unidirectional progressive safety gear

Unidirectional progressive safety gear for counterweight frame application

Unidirectional progressive safety gear for counterweight frame application

Load Weighing Device

Load Weighing Device for modernization

Safety gear for ascending car overspeed protection

Unidirectional progressive safety gear for high speed

Research for innovative solutions and rigid product quality control are key features of Wittur Safeties.
The product range includes uni- and bi-directional, instantaneous and progressive safety gears.
Devices for ascending car overspeed protection are also available. 

The products are suitable both for new equipments or modernization. 
Electromechanical Safety Gear

GLSG-22U



WITTUR GLSG-22U is an innovative safety gear, compliant with requirements of EN 81-20/50:2014. Electro-mechanical activation offers very short reaction time and easy synchronization between installed units. Combined with a magnetic strip-based absolute positioning system including safe electronic actuation, it does not require a conventional overspeed governor and its tension weight: fewer components in the shaft and more space for the cabin. 

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Bidirectional progressive safety gear

BSG-25P



  


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Progressive Type Safety Gears

CSGB 01/02/03



CSGB 01 / 02 / 03 are progressive type safety gears. Braking force is generated through a combination of disc springs and braking elements always in pairs and activated by a movable tripping wedge. The braking force is adjustable by the disc spring assembly.


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Guide rail Brake for ascending car overspeed protection

EBRA20



  • Compliant with Lift Directive 95/16/EC and EN 81-80
  • EBRA20 is acting in upward direction on car guide rails
  • Ascending car overspeed protection
  • Braking force is generated by two spring-loaded brake shoes, which are kept open via electromagnetic coil
  • Placed on upper cross beam of car frame structure
  • Released by signal of overspeed governor contact
  • 3 standard types of adapter plates for fixing to car frame structure available: easy and fast installation
  • Acting also as sliding shoe on car frame
  • Perfect solution for modernization: covers wide range of requirements



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Safety Clearance System for pit or headroom

HSG - HSK





HSG-HSK allows to comply with EN81 rules even when the space in the pit or in the headroom would be too narrow to grant service man's safety.

When a landing door is opened with the flush key, the device is activated and prevents the car to reach the bottom or the top of the shaft by swinging blocks.

  • Feasible installation both in the pit or in the headroom
  • Compliant with requirements as per LD 95/16/EC (EN81)
  • Compliant with requirements as per EN81-21 for existing buildings
  • Solution for risk # 14 of EN81-80 standard (SNEL)
  • Suitable for every type of lift
  • Full automation: activated by opening of lower landing door
  • Emergency unlocking device for all conventional makes of doors
  • Self-monitoring: switched on and off at every car run
  • Easy engineering

 


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Bi-directional progressive safety gear

LADP



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One-Way Active Brake Pad for heavy duty applications

SGA-I-70





  • Safety gear acting in downward direction
  • Perfect solution for high duty applications with heavy loads
  • Suitable for rail head width 32 mm
  • Easy installation


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Unidirectional instantaneous safety gear

SGA 88735 / HKD 503-D





  • Working in downward direction
  • Designed for low and mid-range loads
  • Suitable for rail head width from 8 to 19 mm
  • Various connecting points (top or bottom) for actuating mechanism are available


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Unidirectional progressive safety gears for medium speed

SGB 01-02-03-05





  • Safety gear acting in downward direction
  • Braking power is generated by expanding the C-profiled safety gear block
  • Wide application range (also Duplex arrangement available)
  • Different connections (top or bottom) from actuating mechanism to gripping wedges available
  • Various options like safety gear housing, synchronization linkage or governor rope connection for maximum flexibility


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Unidirectional progressive safety gear

USG-25P




  • Safety gear acting in downward direction
  • Innovative and patented system: progressive braking power is generated by expanding the C-profiled safety gear main body, which is acting as a C-type spring
  • Lightweight design: no additional spring elements required
  • Comfortable floating suspension ensuring simple and accurate alignment in relation to guide rail
  • Easy adjustment for guide rail size and shape (movable safety gear blocks)
  • Whole load range split up into steps so that no additional adjustments needed within one load step
  • Standard fixing via separate housing below car frame
  • Integration in vertical/horizontal frame beams available on request
  • Wide range of options available as safety gear housing, synchronization linkage, governor rope fixing or safety switch

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Unidirectional progressive safety gear for counterweight frame application

WCWSG 01-02-03-05





  • Safety gear acting in downward direction
  • Braking power is generated by expanding the C-profiled safety gear block
  • Wide application range (also Duplex arrangement available)
  • Different connections (top or bottom) from actuating mechanism to gripping wedges available
  • Various options like safety gear housing, synchronization linkage or governor rope connection for maximum flexibility


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Unidirectional progressive safety gear for counterweight frame application

WCWSG 04/10



  • Safety gear acting in downward direction
  • Innovative and patented system: progressive braking power is generated by expanding the C-profiled safety gear main body, which is acting as a C-type spring
  • Lightweight design: no additional spring elements required
  • Compact unit including synchronization for counterweights
  • Comfortable floating suspension ensuring simple and accurate alignment in relation to guide rail
  • Easy adjustment for guide rail size and shape (movable safety gear blocks)
  • Whole load range split up into steps so that no additional adjustments needed within one load step
  • Integration in vertical/horizontal frame beams available on request
  • Wide range of options available as safety gear housing, synchronization linkage, governor rope fixing or safety switch
 

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Load Weighing Device

WLWD




WLWD measures the load in the car.

WLWD is assembled below the car and it is suitable for new lift.

  • Designed for Wittur car frame series WCF and WLF
  • Standard supply voltage is 24 VDC
  • The outputs are either 24V open collector switching (empty, full load, over load) and also voltage (from -10 to +10V) and current outputs (from 0 to 20 mA)
  • The amplifier is available in protection class IP20 and IP54
  • Small mounting dimensions
  • Wide range of applications
  • Pre-arranged to connect to central unit for 110/230 VAC supply

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Load Weighing Device for modernization

WLWD-M




WLWM measures the load in the car.

WLWM is installed on the car frame top beam, and therefore is a perfect solution for modernization.
  • Universal system, designed for modernization
  • The normal supply voltage is 24 VDC
  • The outputs are either 24V open collector switching (empty, full load, over load) or current outputs (from 0 to 20 mA) proportional to measured load
  • By using an additional board it is possible to supply the electronic with 110/230 VAC The switching outputs (empty, full load, over load) are relay contacts in this case
  • Small mounting dimensions
  • Wide range of applications, because independent from load
  • Protection class IP20 and IP54

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Safety gear for ascending car overspeed protection

WGRB04




The WGRB04 is a guide rail braking system used as ascending car overspeed protection. It acts on the car guide rail and reduces the car speed according to the standard EN81-1:1998 chapter 9.10.
The braking force is limited by a disc spring loaded counterwedge. If the breaking force turns to high, the disc springs will be compressed and therefore the breaking force is limited.
The adjustment is carried out and sealed in the factory according to the load and rail conditions.


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Unidirectional progressive safety gear for high speed

WSGB 04/10



  • Safety gear acting in downward direction
  • Constant brake force generated by preloaded disk springs
  • Steady deceleration along whole braking distance
  • Designed to avoid wearing marks to guide rail
  • Several options for different applications are available



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