BESSEY heavy-duty clamp STBM, spindle with hexagon up to 22,000 N

BESSEY High-Performance Clamp STBM – Extreme Clamping Force up to 22,000 N

The BESSEY High-Performance Clamp STBM is designed for the absolute highest demands in heavy machinery construction, steel construction, and industry. With a 19 mm hexagon at the spindle end, it can be operated with a wrench or ratchet – for maximum force transmission in extreme clamping tasks. Made in Germany.

Special Features

  • Clamping force up to 22,000 N – With a tightening torque of 70 Nm, for the absolute highest demands
  • 19 mm hexagon at the spindle end – Operation with wrench or ratchet for maximum clamping force
  • High-performance pressure plate – Heat-resistant, swiveling up to 35°, exchangeable, with sintered steel insert for excellent gliding and emergency running properties
  • Massive rail 40x20 mm – For maximum stability and torsional rigidity
  • Large throat depth 175 mm – Free access to the work area even with large workpieces
  • Made in Germany – Original BESSEY quality

Technical Data

Model Clamping Range (mm) Throat Depth (mm) Rail (mm) Weight (kg)
STB30M 300 175 40x20 5,61
STB40M 400 175 40x20 6,1
STB50M 500 175 40x20 6,67
STB60M 600 175 40x20 7,23
STB80M 800 175 40x20 8,35
STB100M 1,000 175 40x20 9,32
STB125M 1,250 175 40x20 10,77
STB150M 1,500 175 40x20 12,2


Areas of Application

  • Heavy Machinery & Plant Construction – Extreme clamping force up to 22,000 N for maximum loads
  • Steel Construction & Welding – Heat-resistant high-performance pressure plate, ideal for welding
  • Industry & Mechanical Engineering – Hexagon operation with ratchet for maximum force transmission
  • Heavy Steel Structures – Massive rail 40x20 mm for maximum stability
BESSEY Hochleistungszwinge STBM, Spindel mit Sechskant bis 22.000 N