Chain drive

KA 66-TW

Doubled tensile and force of pressure with equal load distribution on the window sashes: Our SHEV KA 66-TW chain drive features two KA 34 drives in a single housing. For simplified installation and low maintenance and service costs.  
KA 66/600-TW1 KA 66/800-TW1 KA-TW-BSY+
Product NamePriceQty
KA 66/600-TW1
KA 66/800-TW1

Performance features

  • Can be used for openings for smoke exhaust; D+H Euro SHEV in accordance with EN 12101‑2; and for daily ventilation
  • With BSY+ motor and synchronised electronics controlled via microprocessor
  • High‑speed function (HS) for especially fast opening windows in case of fire (SHEV)
  • 2 drive chains for optimal power application to the sash
  • Special chain stabilisation
  • Relief of pressure on window gasket after closing process
  • Electronic force and position control
  • Programmable drive functions and different drive parameters
  • Running speed in CLOSED direction decreases to 5 mm/s (passive closing edge protection)
  • Time-controlled reversing when an obstacle is detected in the CLOSED direction (active closing edge protection)

Technical Data

Supply 24 V DC / ±15 % / 2 A
Force of pressure 600 N
Tensile force 600 N
Nominal locking force ** 3000 N
Service life 20000 double strokes *
Stroke 350 - 800 mm
OPEN running speed 11.8 mm/s
OPEN running speed - SHEV 12.2 mm/s
CLOSED running speed 11.8 mm/s
Type of protection IP 32
Emission sound pressure level LpA ≤ 70 dB(A)
Temperature range -15 °C (-5 °C ***) … +75 °C
Fire resistance B300 (30 min / 300 °C)
Housing Aluminium
Surface Powder-coated
Colour White aluminium (~ RAL 9006)
Connection 2.5 m silicone cable
Dimension A 997 / 1347 mm
Dimension B 650 / 1000 mm
* For vertical use, please consult with D+H Sales!
** Depending on the mounting, *** in accordance with VdS 2580


TypeArt. NoStrokeDimension ADimension BDimension CWeightRemark
KA 66/600-TW126.013.50600 mm1347 mm1000 mm173.5 mm5.00 kg
KA 66/800-TW126.013.60800 mm1347 mm1000 mm173.5 mm5.60 kgObserve pressure load diagram!
KA-TW-BSY+26.013.00Variable equipment possible

Brackets are not included and have to be ordered separately.

Potential drive options

Approvals / Certificates

These products are also available with the following approvals:

Find out about permission details from your D+H Partner.


KA x6 TW05-DF - Chain drive, twin, turning sash (553.13KB)
KA x6 TW05-DF-L - Chain drive, twin, turning sash, mirrored (687.75KB)
KA x6 TW1 - Chain drive, twin (645.87KB)
KA x6 TW1-DF - Chain drive, twin, turning sash (548.87KB)
KA x6 TW1-DF-L - Chain drive, twin, turning sash, mirrored (532.85KB)

KA 66-TW - Chain drive KA (4.96MB)
KA 66-TW-DF - Chain drive KA (3.16MB)

KA 34 / KA 54 / KA 34-K / KA 54-K / KA 34-BSY+ / KA 54-BSY+ / KA 34-K-BSY+ / KA 54-K-BSY+ / KA 66-TW-BSY+ / KA 66-TW-K-BSY+ - Chain drive KA (5.33MB)

KA 66/600-TW1 [26.013.50]
KA 66/800-TW1 [26.013.60]
KA-TW-BSY+ [26.013.00]