Product outline

Quantifying of grip force in metalworking Daily management tool to support precision machining

GRIP MASTER is a tool to quantify grip force in metalworking, while measuring and managing a stabilized metalworking process.
Grip force of drill bits or work can be properly managed, preventive maintenance of machine tools, improvement of machining quality are made possible.
Huge line up of sensor probe from φ4 to φ32 are available, besides that various functions such as memory function ensures an easy management of grip force.

Safe and easy inspection with quantified grip force

Grip force of tool holders can be easily checked by simply inserting and gripping the sensor probe by a tool holder.

Did you know that tool holders also have lifespan?

It does not mean that the same grip force is applied always, even if tools are set in a usual way.
Gripping force of tool holders changes over time due to wear and over use. Especially, gripping force of a hydraulic chuck declines over time depending on usage.
Then, if not enough grip force is applied, it may lower machining accuracy and may cause damage on products, lowering productivity a lot.

■By checking the grip force of tool holders, you can…

1)check if enough force is applied to hold bits.

2)detect deterioration of tool holders in advance

■Prevent damage and problems during metalworking process!

A variety of sensor probe product lines

φ4 to φ32 supported

Ideal for hydraulic chuck

Gripping force of tool and work holders can be checked regularly to maintain the runout accuracy.

No calibration required

Information of the sensor is stored in the memory of the sensor probe itself.
There is no need to enter information for calibration each time when a sensor probe is changed.

Easy data recording by pressing “SAVE” button

Measurement data will be recorded with date and time when “SAVE” button is pressed.
Recorded data can be easily exported to PC via USB interface.

Carrying case


UGM:Sensor probe(φ4, φ6, φ8, φ10, φ12, φ16)
Model UGM-D04 UGM-D05 UGM-D06 UGM-D07 UGM-D08 UGM-D10 UGM-D12 UGM-D16
Diameter 4mm 5mm 6mm 7mm 8mm 10mm 12mm 16Nm
Rated capacity(R.C) 10kN 10kN 20kN 20kN 20kN 40kN 40kN 60kN
Calculated holding torque at R.C 15.3Nm 19.1Nm 45.9Nm 53.6Nm 61.2Nm 153.0Nm 183.6Nm 367.2Nm
Maximum safe overload 120% R.C.
Safe temperature range +10〜+40℃
Cable φ3 shielded cable 1.5m connector included φ5 shielded cable 1.5m connector included
Material Sensor probe:stainless, Cover:polyacetal (it cannot be removed)
Weight (excluding cable) Approx. 100g Approx. 100g Approx. 100g Approx. 100g Approx. 100g Approx. 120g Approx. 150g Approx. 220g

UGM:Sensor probe (φ20, φ25, φ32)
Model UGM-D20 UGM-D25 UGM-D32
Diameter 20mm 25mm 32mm
Rated capacity(R.C) 100kN 150kN 200kN
Calculated holding torque at R.C 765Nm 1430Nm 2400Nm
Maximum safe overload 120% R.C.
Safe temperature range +10 to +40℃
Cable φ5 shielded cable 1.5m connector included
Material Sensor probe:stainless, Cover:polyacetal (it cannot be removed)
Weight (excluding cable) Approx. 360g Approx. 800g Approx. 1000g

A/D converter 80times/sec.
Display unit 128×64dot LCD
Recording function Record when [SAVE] is pressed
Recording media Internal memory
Recording method Texts in CSV format
Recorded data ID, sensor number, date and time, indicated value/reading (torque and grip force),unit, and temperature
Memory for recorded data 12,000 data
Hold:Sample/ peak
USB interface
General specifications
Internal power supply AA alkaline batteries or nickel metal hydride batteries (4 pcs.)
External power supply AC adopter for 100 Vac (sold separately)
Max. continuous operating time Approx. 30 hours (when backlight is off)
Operating conditions Temperature: -10 to +40 ℃
Humidity: 80% RH or less (non-condensing)
Dimensions 86(W)×132(H)×30(D)mm (not including protrusions)
Weight Approx. 290 g (including the 95g weight of battery)
AA alkaline battery……4, Operation manual……1
Optional accessories
AP0516:Special AC adapter (for AC100V)
CA81-USB:1.8m miniUSB-computer USB cable

Please note that there are possibilities of individual differences in a color tone on display devices such as LEDs, fluorescent display tubes and LCDs due to manufacturing process or production lots.


Product catalogue(PDF)
⇒Download Page
Operation manual(PDF)
External dimension
Support tools