Bernstein
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4-989-KSB

Torque adapter set 6 pcs 3.0 to 5.5 Nm for 1/4 inch bits

  • Content: see parts list
  • Preset torque, tolerance +/-10%
  • adapter Ø 12 mm, length 28 mm (without shank)
  • hex shank 1/4 inch. In combination with power-tool max. speed 100 rpm.
  • Bit magnetic holder 1/4 inch
  • material alloyed steel HRC 43-48
  • in plastic quadro-box
  • single packing
  • in plastic quadro box (91x43x15mm)
  • weight 141 g

Area of application

Always set the adapter to zero scale after use. The adapters are tested according to DIN EN ISO 6789 (Hand-operated torque screwdriving tools) and have a tolerance of ± 10% for at least 20,000 clicks. The torque value should be checked regularly by the user via a torque meter. The adapter functions by locking the ratchet, the torque in the bushing sleeve. The system also consists of a hollow shaft and a damping cylinder. The core shaft is able to move the mobile ratchet. The damping cylinder has a slot to allow the spacer sleeve to slide on the core shaft. When the applied torque exceeds the preset torque, the core shaft becomes inactive. This means that when the torque requirement is reached, the continuous tension is no longer increased, so also on the screw to be tightened.


Technical description

The adapters are tested according to DIN EN ISO 6789 (manually operated torque screwdriving tools) and have a tolerance of ± 10% for at least 20,000 clicks. The torque value should be checked regularly by the user via a torque meter. The adapter functions by locking the ratchet, the torque in the bushing sleeve. The patented system also consists of a hollow shaft and a damping cylinder. The core shaft is able to move the mobile ratchet. The damping cylinder has a slot to allow the spacer sleeve to slide on the core shaft. When the applied torque exceeds the preset torque, the core shaft becomes inactive. This means that when the torque requirement is reached, the continuous tension is no longer increased, so also on the screw to be tightened.


General information

Torque adapters are often used as a complete solution for work on electronic equipment, in quick-change systems, robotic stations, aerospace, medical, or just about any workbench wherever accurate torque is needed.


Content

Torque adapter set consists of:

  • 4-986 Torque adapter 3.0Nm
  • 4-986-5 Torque adapter 3.5Nm
  • 4-987 Torque adapter 4.0Nm
  • 4-987-5 Torque adapter 4.5Nm
  • 4-988 Torque adapter 5.0Nm
  • 4-988-5 Torque adapter 5.5Nm