2
4RYL2, 4RYL3, 4RYL5, 4RYL6, 4RYL8, 4RYL9
Westward Operating Instructions and Parts
Digital Torque Wrench
SPECIFICATIONS
Accuracy *1
CW
:
±2%
CCW
:
±3%
Communication
No
Operation Mode
Peak hold / Track
Unit Selection
N-m, ft-lb, in-lb, kg-cm
Head Type
Lever Type Ratchet
Gear Teeth
36
Button 4
Bright LED
12LED/ 4Red+8Green
Pre-setting
1 set
Battery
AA x 2
Battery Life *2
(Continuous operation)
110 hrs.
Battery Life *2
(Standby)
1 year
Operating Temperature
-10
℃
~60
℃
Storage Temperature
-20
℃
~70
℃
Humidity
Up to 90% non-
condensing
Drop Test
1 m
Vibration Test *3
10G
Life time *4
10000 cycle
Environmental test *5
Pass
Electromagnetic
compatibility test *6
Pass
*
:
Please see note
Note:
*1: The accuracy of the readout is guaranteed from
20% to 100% of maximum range + /- 1 increment.
The torque accuracy is a typical value. Calibration
point is at the middle line of black circle area on the
rubber grip. For keeping the accuracy,calibrate the
wrench for a constant period time (1 year). And the
accuracy is based on the zero degree of offset from
perpendicular drive.
*2: Use two AA batteries (Test condition: Toshiba
carbon-zinc R6UG battery)
*3: Horizontal and vertical test
*4: One cycle means swing the torque wrench from 0
N-m to maximum range and back to 0 N-m.
*5: Environmental test:
a. Dry heat
b. Cold
c. Damp heat
d. Change of temperature
e. Impact (shock)
f. Vibration
g. Drop
*6: Electromagnetic compatibility test:
a. Electrostatic discharge immunity (ESD)
b. Radiated susceptibility
c. Radiated emission
Model
Square
drive
(inches)
Max. operation range
4RYL2 1/4
30 N-m / 22.12 ft-lb /
265.5 in-lb / 306.1 kg-cm
4RYL3 3/8
135 N-m / 99.5 ft-lb /
1195 in-lb / 1378 kg-cm
4RYL5 1/2
135 N-m / 99.5 ft-lb /
1195 in-lb / 1378 kg-cm
4RYL6 1/2
200 N-m / 147.5 ft-lb /
1770 in-lb / 2041 kg-cm
4RYL8 1/2
340 N-m / 250.7 ft-lb /
3009 in-lb / 3469 kg-cm
4RYL9 3/4
410 N-m / 302.3 ft-lb /
3268 in-lb / 4184 kg-cm