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HH Roberts Machinery Ltd logo
Questions ?
Call us at 905-624-5536
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H.H. Roberts Machinery Limited
1324 Matheson Blvd E., Mississauga, Ontario, Canada. L4W-2Z7, Fax 905-624-9065
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We ship anywhere direct from the Command factory
Command tooling systems Inc logo   System IITM Adaptive Drawbar Dynamometer
Command drawbar dynamometer kit 

 Download the brochure (pdf)
  • Detect inadequate retention force in seconds without disassembling drawbar.
  • Modular Components fit most machining centers.
  • Ensure original machine performance.
  • Includes carrying case.
  • Maximize tool life, spindle life and system rigidity.
  • Combat toolholder shank fretting.
  • Not for use with screw type drawbar mechanisms
  • For all 30, 35, 40, 45, & 50 steep taper machining centers (requiring retention knobs) and HSK50A, HSK63A, HSK100A.
  • Interchangeable shanks allow use on virtually all CNC machines
Command drawbar dynamometer for testing cnc tool clamping tension
drawbar force gauge
(dynamometer)

Precision Maintenance Tool

Provides accurate drawbar force measurements on steep taper (CAT, BT, DIN, etc.) and HSK machining centers. Verifies the machine's drawbar performance against the manufacturers' specifications or from readings taken when the machine was new to ensure optimum cutting tool performance.

Fast Performance Quickly identifies if retention force losses are at fault when poor surface finishes appear or when tool performance deteriorates.

Services Entire Machine Shop
A compact load cell with an electronic display and a family of taper adaptors combine to make a single measuring unit that can service an entire machine shop employing a variety of machining centers.

Simple Operation
Operation is fast and easy. Simply attach the taper adaptor and retention knob adaptor, screw in a retention knob, and install it in your spindle like an ordinary toolholder. The load cell is stretched by the machine's drawbar. This stretch is measured electronically and is instantly displayed on the digital readout. Spring deterioration or maladjustment can be detected in no time. No costly disassembly. No machine downtime.

Convenient Display
Features standard 0-10,000 lb. range, large easy-to-read digital display, auto-off feature and touch sensitive buttons sealed for dust-proof operation. 1000 Hours Operation 

Operates on two 9 volt batteries for up to 1000 hours continuous operation. Calibration data is stored on a non-volatile memory.

Custom Calibration Available
Standard calibration is 0-10,000 pounds. Can be custom calibrated. Call for quote.

Re-Calibration and factory re-certification service is available. Turn around is typically only 48 hours.  There is no bench charge if the unit is not repairable.

Components of a Command Dynamometer
see part numbers below this table
One part from each row is needed to assemble a test rig
1 The pull studs can be any style to match your machine. You can use pull studs that you already have.
2 Command dynamometer pull stud adaptors The Pull Stud Adaptors are interchangeable on each size sleeve

The thread must match you pull stud.
3 Command dynamometer taper adaptors Taper adaptors sleeves:
Cat-V
BT
HSK

custom adaptors also available

Note for HSK you must match the syle
type A, E, or F.
4 Dynamometer body

The dynamometer is supplied in a foam filled carrying case.   If you have a large number of different pull studs in your shop, there is a pull stud adaptor pallet that will fit into the case.

Pull Stud Adaptors (retention knob adaptors)
Sleeve Order Part No.
Cat-V 30 XDCA-0002
Cat-V 40 XDCA-0004
Cat-V 45 XDCA-0005
Cat-V 50 XDCA-0006
   
BT-30 XDBA-0002
BT-35 XDBA-0003
BT-40 XDBA-0004
BT-45 XDBA-0005
BT-50 XDBA-0006
DIN-69872 # 30 XDDA-0002
DIN-69872 # 40 XDDA-0004
DIN-69872  $ 50 XDDA-0006
Taper Adaptor Sleeves
# 30 taper sleeve XDTA-0002
# 35 taper sleeve XDTA-0003
# 40 taper sleeve XDTA-0004
# 45 taper sleeve XDTA-0005
# 50 taper sleeve XDTA-0006
NMTB 50 adaptor XDNA-0006
HSK drawbar adaptors
HSK-40 A / E XDTA-0040
HSK-50A / HSK63F XDTA-0050
HSK-63A XDTA-0063
HSK-100A XDTA-0100
HSK flange Adaptors
HSK-40 A / E XDFA-0040
HSK-50A / HSK-63F XDFA-0050
HSK-63A XDFA-0063
HSK-100A XDFA-0100