Straight Hand Tool Series

1/4” / 6mm Capacity

Revolutionary comfort and superior surface quality with high speed. Plenty of power for deburring, part cleaning, deflashing, or weld removal. Constant governed high speed does the cutting, not operator pressure. Eliminate heat, stress, and injury risk and end daily maintenance costs.

Just guide the 525DM with its low vibration and weight. The patented automatic brake option stops this tool in a few seconds.

525DM Specifications
Speed RPM30,00040,000
Power Rating hp (kW)0.40 (0.30)0.45 (0.34)
Inlet Air Pressure90 PSI (6.2 Bar)
Air Consumption Idle cfm (l/s)12 (5.66)16 (7.55)
Air Consumption Working Flow cfm (l/s)12 (5.66) - 20 (9.44)
Air Hoses and Fittings Minimum Size6mm ID
Sound LevelLess Than 67 dBA
Max Shank Capacity1/4” (6mm)
Hand Tool Weight19.5oz (0.55kg)

Don't Sacrifice Comfort and Safety for Performance!

525DM Vibration Statistics
Time to reach EAV 2.5 m/s² A(8) 23 hours, 32 minutes
Time to reach ELV 5 m/s² A(8)94 hours, 6 minutes
Vibration magnitude m/s² r.m.s 1.46

Solve problems in hand operations with revolutionary Air Turbine Tools®. Reduce injury risk and repetitive stress on your hands and arm, and eliminate limitations on working time.

EAV = Time to reach Exposure Action Value

ELV = Exposure Limit Value

Vibration Statistics for all Air Turbine Tools®

525DM Dimensions

525DM Dimensional Drawing
All fittings, couplings, and hoses must have a minimum of 6mm internal diameter.
525DM Dimensions
A0.86” (21.84mm)D4.97” (126.24mm)
B1.00” (25.40mm)E5.64” (143.26mm)
C2.00” (50.80mm) F8.37” (212.60mm)


Included Equipment

525DM Hand Tool
Collet System (1/4” or 6mm)
Collet Wrenches
Rear Exhaust
Exhaust Deflector
Trigger Switch
1/4" NPT Air Supply Fitting

Standard Equipment

1/4” or 6mm collet standard – other sizes optional. Oil-free 90 psi (6.2 bar), clean, dry air supply required.

Accessories ModelsPart #
High Flow Filter30004
High Flow Filter / Regulator30003
High Flow Filter / Regulator / Extractor30008
5’ Air Supply Assembly w/Fitting for DM Models30010
8’ Air Supply Assembly w/Fitting for DM Models30011
Speed RPMPart #Speed RPMPart #
1/4" w/break6mm w/break
Speed RPMPart #Speed RPMPart #

Service & Support

Support is always available from our technical team in the USA and Germany. Repair Service is available in Florida and Munich. Call our factory technicians at +1-561-994-0500 or email us at [email protected].