Page 64 - Tohnichi_CIP

Tohnichi Reference Guide 2019
BTM/ Bolt Tension Meter ? Bourdon type hydraulic bolt tension meter
Dial Indicating
Bourdon Type
Hydraulic
B-BTM ? Measure bolt tension to determine optimal torque Accuracy ±3%

Axial Tension Axial Tension Axial Tension Applicable Nominal Dimensions
Range Metric Range American Range Diameter of Bolts Overall Overall Overall
S.I. Model Weight
[kN] Model [ton] Model [lbf] (Minimum Length) Length Thickness Height
Min.-Max. Grad. Min.-Max. Grad. Min.-Max. Grad. [mm] [mm] [mm] [mm] [kg]
Hexagon Bolt
M16 (70), M20 (75)
M22 (80), M24 (85)
BTM400K 100-400 5 40BTM-2 10-40 0.5 40BTM-2-A 23000-90000 1000 260 64 280 12.6
Torsia Bolt
M16 (65), M20 (70)
M22 (75), M24 (80)
Standard Bolt
B-BTM13K 1.2-13 0.2 1.3B-BTM 0.12-1.3 0.02 1.3B-BTM-A 300-2800 50 M5 (20), M6 (21) 106 78 217 7.7
M7 (22), M8 (23)
Standard Bolt
B-BTM40K 4-40 0.5 4B-BTM 0.4-4 0.05 4B-BTM-A 1000-9000 100 M10 (29), M12 (31) 134 82 241 9.8
M14 (32)
BTM400K B-BTM13K Standard Bolt
B-BTM130K 12-130 2 13B-BTM 1.2-13 0.2 13B-BTM-A 3000-28000 500 M16 (41), M18 (43) 186 106 287 17.5
M20 (44), M24 (47)
Standard Bolt
B-BTM400K 40-400 5 40B-BTM 4-40 0.5 40B-BTM-A 10000-90000 1000 M27 (72), M30 (74) 280 126 369 31.0
M36 (79), M42 (84)
Note 1. BTM400K comes with a plate and bushing for torsia bolt M20 and M22. Other size are optional.
2. ?Hexagon Bolt? in the above list stands for the high-tensile hexagon bolt for friction bonding.
Standard Accessories Plate, Bushing, Spanner for plate, Bolt for plate, Storage Case, Calibration Certi?cate
BTM Optional Accessories
Bushing for Hexagon Bolt Bushing for Torsia Bolt Plate for Torsia Bolt/Hexagon Bolt
Applicable Nominal Diameter Applicable Nominal Diameter Applicable Nominal Diameter
Part # Part # Part #
of Bolts of Bolts of Bolts
650 M16 665 M16 669 M16
651 M20 666 M20 670 M20
652 M22 667 M22 671 M22
653 M24 668 M24 672 M24
Fcon Bolt Tension ? Creates consistent bolt tension
? Applied to fasteners and nuts
Stabilization
? Acquisition of patent in EU.
RoHS
Axial Tension Stability Characteristics
Model
Fcon
Sales Unit: 10pcs/case Test conditions Fluctuating coefficient
Axial tension 80 KN
Content: 90g/bottle Hex bolt, nut, washer
M16 × 2 (8.8) Average torque coefficient
Torque ?uctuating coefficient Average Torque coefficient
Zinc chromate
30 times of test

Fcon Fcon Machine oil Lubricant Other
Characteristic of axial tension stabilization
Torque coef?cient calculated by formula K = t/(d × f)
T = tightening torque, d = nominal size of screw,
F = axial tension
Torque fluctuating coef?cient =
torque coef?cient standard deviation/average torque coef?cient
In?uence of Tightening Speed In?uence of Temperature
Force Measurement Instrument Torque coe?cient Machine oil Bearing surface: HRC 40 polished Torque coe?cient Hex bolt, nut, washer Machine oil
Screw size: M10 × 1.5
Fcon
Zinc plated chromate
Axial tension 80 KN
Axial tension: 30 KN
M16 × 2 (8.8)
Number of test: 5
Zinc chromate

Fcon

Tightening operation temperature (°C)
Tightening speed (r.p.m)
In?uence of tightening speed on torque coefficient In?uence of temperature on torque coefficient

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