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Use accurate torque controls to improve quality! Case examples can be found in torque handbook 8

Semi-automatic AirtorkNEW

A3

Power Torque Wrench/Assembly
RoHS markingSocket insertion part□9.53Socket insertion part□12.7

Assembly

Angle

Pneumatic

Graduation

Push button

Pneumatic motor mounted on torque wrench, for work from provisional tightening to final tightening using just the one tool.

A50N3 [Overall length: 277mm]

A180N3 [Overall length: approx. 487.5mm] 

Left: Turning with an ordinary socket                Right: Turning with an anti-vibration socket

Application

  • For assembly and mass-production.

Features

  • The A3 series semi-automatic Airtork can be used with anti-vibration sockets for impact wrenches. This reduces vibrations during turning, and improves work efficiency.
  • Replaces conventional two-step tightening process with one tool in great efficiency.
  • Provisional tightening is applied using the air motor operation, and completed in high accuracy by manual torque wrench operation.
  • Final tightening is done with the torque wrench, so fluctuations in air pressure will not affect applied tightening torque.
  • Changing tightening torque is simple: just turn the knob to adjust the N•m scale.
  • Easy calibration with torque wrench tester
  • LS version comes with limit switch. Thich creates error-proofing (Pokayoke) system when used with CNA-4mk3 count checker (sold separately).

Demonstration video

The A3 Semi-Automatic Airtork

Specifications

S.I. MODEL A10N3 A25N3 A50N3 A100N3 A180N3
TORQUE RANGE
[N・m]
MIN.~MAX. 3~10 5~25 10~50 20~100 40~180
GRAD. 0.1 0.25 0.5 1 2
METRIC MODEL A100M3 A250M3 A500M3 A1000M3 A1800M3
TORQUE RANGE
[kgf・cm]
MIN.~MAX. 30~100 50~250 100~500 200~1000 400~1800
GRAD. 1 2.5 5 10 20
AMERICAN MODEL A90I3-3/8 A200I3-3/8 A400I-3/8 A800I-3/8 A75F3-3/8 A130F3-1/2
TORQUE RANGE
[lbf・in/lbf・ft]
MIN.~MAX. 30~90lbf・in 50~200 100~400 200~800 15~75lbf・ft 30~130
GRAD. 1lbf・in 2.5 5 10 1lbf・ft 2
PROVISIONAL TIGHTENING TORQUE [N・m] 1.8     2.5 5
FREE ROTATION [r.p.m.] 750 800
APPLICABLE BOLT COMMON STEEL M6 (M7) M8 M10 M12
HIGH TENSION M4,(M4.5) M6 M6,(M7) M8 M10
MAX. HAND FORCE P [N] 51 127.6 255.1   396.8 450.0
RATED AIR PRESSURE [Mpa] 0.6
AIR MASS FLOW [m3/min] 0.2 0.29 0.31
DIMENSION
[mm]
EFFECTIVE LENGTH 196 252 400
OVERALL LENGTH L’ 277 338 487
OVERALL HEIGHT 82.8 95.2 114
HEAD 16 17 20
SQ. DRIVE □a 9.53 12.7
20.9 24.9 26.4
11 12.2
ΦD 12 16
LS
WEIGHT [kg] 1.0 1.4 2.6
LIMIT SWITCH WITHOUT
                  ACCURACY ±3%
                   
S.I. MODEL ALS10N3 ALS25N3 ALS50N3        
TORQUE RANGE
[N・m]
MIN.~MAX. 3~10 5~25 10~50        
GRAD. 0.1 0.25 0.5        
METRIC MODEL ALS100M3 ALS250M3 ALS500M3        
TORQUE RANGE
[kgf・cm]
MIN.~MAX. 30~100 50~250 100~500        
GRAD. 1 2.5 5        
AMERICAN MODEL ALS90I3-3/8 ALS200I3-3/8 ALS400I3-3/8        
TORQUE RANGE
[lbf・in/lbf・ft]
MIN.~MAX. 30~90lbf・in 50~200 100~400        
GRAD. 1lbf・in 2.5 5        
PROVISIONAL TIGHTENING TORQUE [N・m] 1.8        
FREE ROTATION [r.p.m.] 750        
APPLICABLE BOLT COMMON STEEL M6 (M7) M8        
HIGH TENSION M4,(M4.5) M6 M6,(M7)        
MAX. HAND FORCE P [N] 51 127.6 255.1        
RATED AIR PRESSURE [Mpa] 0.6        
AIR MASS FLOW [m3/min] 0.2        
DIMENSION
[mm]
EFFECTIVE LENGTH 196        
OVERALL LENGTH L’ 277        
OVERALL HEIGHT 82.8        
HEAD 16        
SQ. DRIVE □a 9.53        
20.9        
11        
ΦD 12        
LS 44.5        
24        
WEIGHT [kg] 1.2        
LIMIT SWITCH WITH        
          ACCURACY ±3%        
Notes
  • Limit switch specification is AC/DC 30V below 1A.

  • Length of standard LS curly cord (when extended): Approx. 2m

 

 

Dimensions

A3 dimensional drawings

A180N3 dimensional drawings

ALS3 dimensional drawings

◆ How to order

[Tohnichi] [Model] Please specify.

[Example 1] Tohnichi A10N3

[Example 2] Tohnichi ALS50N3

 

◆ Things to remember when ordering
  • A3 model: Low provisional torque

  • Use pneumatic sockets only.

 

Alternative product

AC3

Optional Equipment

AUR

Download

Product Catalog

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Registration
Manuals

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Software

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Parts List

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Online Part Search System
How to Use
Piping/Air pressure and operating range

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Calculating the compressor capacity.

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Differences between adjustable, preset and pre-lock torque wrenches

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Technical Data
4. Tightening Reliability

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5. Selection of Tightening Tools

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6. Torque Tools are Measurement Equipment

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[September 2018 Version] Everything from torque controls to Tohnichi’s Tightening Guarantee System

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