Heavy Duty Motor Mount Series

The popular long steel barrel 202HD is a compact powerful fixture mount motor with governed constant speed ranges of 30,000, 40,000, 50,000, and 65,000 rpm. Drill rubber, plastic, or mill faster and cleaner. Collet capacities of ER 8 1/8” (3mm) with optional collets for smaller and metric applications available.

The 202HD has the advantage of a stainless steel barrel for rigid fixture mounting in applications such as plastic drilling and robotic metal finishing. Oil-free operation eliminates part contamination.

Mountable area of Ø 18.84mm OD by 50.8mm. Ceramic bearing option available.

202HD Specifications
Speed RPM30,00040,00050,00065,000
Power Rating hp (Kw)0.4 (.30)0.45 (0.34) 0.5 (0.37)0.55 (0.41)
Inlet Air Pressure90 PSI (6.2 Bar)
Air Consumption Idle cfm (l/s)10 (4.72)13 (6.14)14 (6.61)
Air Consumption Working Flow (l/s)11 (5.19) - 20 (9.44)
Air Hoses and Fittings Minimum Size6mm ID
Sound LevelLess Than 78 dBA
Max Shank CapacityER 8 - 1/8” (3mm)
Motor Weight9 oz (0.26 kg)

202HD Dimensions

202HD Dimensional Drawing
All fittings, couplings, and hoses must have a minimum of 6mm internal diameter.
202HD Dimensions
A1.33” (33.84mm)D2.0” (50.8mm)FØ 2.0” (50.8mm)
BØ 0.74” (18.84mm)
E5.35” (135.95mm)G7.13” (181.1mm)
C4.27” (108.33mm)
202HD Dimensions
A1.33” (33.84mm)
BØ 0.74” (18.84mm)
C4.27” (108.33mm)
D2.0” (50.8mm)
E5.35” (135.95mm)
FØ 2.0” (50.8mm)
G7.13” (181.1mm)


Included Equipment

202HD Motor
ER 8 Collet System (1/8” or 3mm)
Collet Wrenches
Rear Exhaust
1/4” NPT Air Supply Fitting

Standard Equipment

ER 8 Collet System (1/8” or 3mm collet.)
Oil-free 90 psi / 6.2 bar clean, dry air supply required.

Accessories ModelsPart #
High Flow Filter / Regulator30003
5’ Air Supply Assembly w/Fitting30010
ER8- 1/8"ER8- 3mm
Speed RPMPart #Speed RPMPart #


Drilling Rubber Parts by Air Turbine Motors® 50,000 rpm 202HD

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].