Senator SEN-557-0400K User manual
5
l
Reversible ratchet head.
l
”CLICK + SNAP” action indicates when the
pre-set torque level has been reached.
l
Engraved kgf.m and Nm scale
on barrel.
l
Micrometer type sleeve allows preset
torque values to be accurately set.
l
Manufactured to ISO 6789-2:2017
(BS EN 26789:2003).
OPERATING INSTRUCTIONS
3/8" SQUARE DRIVE
TORQUE WRENCH
CAPACITY: 20-110Nm
ORDER CODE
SEN-557-0400K
IDENTIFICATION INSTRUCTIONS FOR USE
Torque setting adjustment:
Example: To set the torque to 50Nm.
1. To unlock the handle turn the lock nut (1)
anti-clockwise.
2. Turn the knurled handle (2) until the zero marked on
the scale (3) is in line with the next lowest torque
setting on the Newton meter linear scale (4). In this
case 40Nm.
3. Continue to turn the knurled handle seven more
graduations (1 graduation on scale (3) equals
1Nm). The wrench is now set at 47Nm.
4. Tighten the lock nut (1) to secure the setting.
Method of use:
IMPORTANT!
Always use the correct size socket and if necessary
an accessory. Preferably do not use knuckle or
universal joints, as these could result in incorrect
torque settings.
1. Place the square drive onto the socket or extension
bar so that the wrench is perpendicular to the nut or
bolt that you wish to be tightened.
2. Gripping the knurled handle
(2)
with the right hand,
whilst supporting the square drive end with the left
hand, gently but firmly apply a steady pull to the
handle (in a clockwise direction) until a click is
heard and a slight ‘break’ in the handle is felt.
Do not turn any further.
Please note: This torque wrench has a reversible
ratchet head (see fig. 2). Set the direction indicator
(5) to clockwise or anti-clockwise.
1. Lock nut
2. Knurled handle
3. Horizontal scale
4. Linear scale
5. Reversing switch
FIG. 1
FIG. 2
3
1
2
4
You have purchased a quality product that is designed
for high performance and a long service life. If safety
and maintenance procedures are followed and the tool
is used correctly it will last for many years.
•Always follow instructions for assembly
before operation.
•Ensure your workpiece is firmly held or fixed before
commencing work.
•When using torque tools it is possible that
fasteners may break or slip. Always stand with both
feet on the floor and avoid applying torque in
awkward positions.
•The drive part of the tool and any accessories
should always be in line with the fastener.
Misalignment and uncontrolled movement
will affect accuracy.
•Only use the tool on the job for which it has
been designed.
•Keep the tool clean by wiping. Never dip in
cleaning fluid.
•Always store tools away from dirt, oil and swarf as
this can damage mechanisms.
• We recommend that your torque tool be
calibrated annually.
SAFETY & MAINTENANCE
Senator Tools continually strives to improve its products.
Specifications may change without prior notice.
SENATOR TOOLS
P.O. Box 14, Wigston, Leicester, England, LE18 1AT.
Senator is a registered trade mark of The Kennedy Group Ltd.
QUALITY GUARANTEE &
WARRANTY
SENATOR TOOLS carry a one year manufacturer’s warranty.
SENATOR TOOLS are designed & manufactured
to the highest standards & specifications.
Assuring the quality and performance required by all sectors
of industry.
SENATOR TOOLS are fully guaranteed against
faulty materials & workmanship.
Should they be found to be defective, they will either be repaired or
replaced free of charge (fair wear and tear and/or misuse excepted).
Please retain supplier invoice as proof of purchase.
Always dispose of unwanted tools, accessories and
packaging materials in an environmentally friendly
manner. Never allow lubricants to contaminate rivers,
water ways or drains.
SENATOR
Torque Wrenches are manufactured and tested to
ISO 6789-2:2017 (BS EN 26789 : 2003)
Accuracy = ± 4% of the set load.
After use always adjust to the lowest torque setting.
•Release the wrench immediately when the click is
heard/felt as continuing will result in an incorrect
torque setting being applied and may cause possible
damage to parts.
•Please note that the ‘click’ becomes weaker with
the lower torque settings.
•If the wrench is new or has not been used for a while
then operate it a few times on a lower torque setting
to allow the internal lubrication to recoat working
parts.
•Do not turn adjustment below lowest torque setting.
WARNING
Foot Kilo-gram Newton
Pounds Metres Metres
lbf.ft kgf.m N.m
5 0.69 6.78
10 1.38 13.55
15 2.07 20.33
20 2.77 27.10
25 3.46 33.88
30 4.15 40.65
35 4.84 47.43
40 5.53 54.20
45 6.22 60.98
50 6.91 67.75
55 7.60 74.53
60 8.30 81.30
65 8.99 88.08
70 9.68 94.85
75 10.37 101.63
80 11.06 108.40
85 11.75 115.18
90 12.44 121.95
95 13.13 128.73
100 13.83 135.50
105 14.52 142.28
110 15.21 149.05
115 15.90 155.83
120 16.59 162.60
125 17.28 169.38
130 17.97 176.15
135 18.66 182.93
140 19.36 189.70
145 20.05 196.48
150 20.74 203.25
155 21.43 210.03
Newton Foot Kilo-gram
Metres Pounds Metres
N.m lbf.ft kgf.m
10 7.38 1.02
20 14.76 2.04
30 22.14 3.06
40 29.52 4.08
50 36.90 5.10
60 44.28 6.12
70 51.66 7.14
80 59.04 8.16
90 66.42 9.18
100 73.80 10.20
110 81.18 11.22
120 88.56 12.24
130 95.94 13.26
140 103.32 14.28
150 110.70 15.30
160 118.08 16.31
170 125.46 17.33
180 132.84 18.35
190 140.22 19.37
200 147.60 20.39
210 154.98 21.41
Kilo-gram Newton Foot
Metres Metres Pounds
kgf.m N.m lbf.ft
1 9.81 7.23
2 19.61 14.47
3 29.42 21.70
4 39.23 28.93
5 49.04 36.17
6 58.84 43.40
7 68.65 50.63
8 78.46 57.86
9 88.26 65.10
10 98.07 72.33
11 107.88 79.56
12 117.68 86.80
13 127.49 94.03
14 137.30 101.26
15 147.11 108.50
16 156.91 115.73
17 166.72 122.96
18 176.53 130.19
19 186.33 137.43
20 196.14 144.66
21 205.95 151.89
CONVERSION FORMULAS
1kgf.cm = 13.887 ozf.in
1kgf.cm = 0.868 lbf.in
1kgf.cm = 0.098 N.m
1kgf.m = 7.233 lbf.ft
1kgf.m = 9.807 N.m
1N.m = 141.6 ozf.in
1N.m = 0.738 lbf.ft
1N.m = 8.851 lbf.in
SAFETY & MAINTENANCE
WARNING TORQUE CONVERSION CHART
TORQUE CONVERSION CHART
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