Ergonomic reaction arms that stabilize your tightening tool and improve operator comfort on assembly lines.
Atlas Copco Torque Arms (SMC) are ergonomic reaction arms designed to absorb tightening reaction torque and improve control and comfort in continuous industrial work.
They fit assembly stations and automation applications, with a range of models defined by torque level, working length, maximum holder swivel angle, and tool holder interface type.
How do I choose the right SMC model?
Step 1: Match the arm torque level to the tightening tool and the application.
Step 2: Check the required working length between the mounting point and the operating point.
Step 3: Select the maximum swivel angle and tool holder interface that fit your tool setup.
What should I check before choosing the arm length?
Check the actual reach required at the station and the motion range the operator needs.
SMC models are available in different minimum and maximum lengths, so the arm should fit the workstation geometry.
Is there a difference between Type A and Type B tool holder interfaces?
Yes.
The family includes models with Type A and models with Type B tool holder interfaces.
The right choice depends on the tightening tool model and the connection required at the station.
What applications are these reaction arms suited for?
They are especially suitable for assembly stations and automation applications where tightening reaction torque must be controlled in a stable and comfortable way.
What model range is included in this family?
The family includes models such as SMC 12, SMC 25, SMC 50, SMC 100, SMC 200 and SMC 300, with different working length variants within each torque level.
How should a reaction arm be maintained?
Inspect the mounts, joint movement, and tool holder interface regularly, and make sure there is no unusual play or wear that could affect stability.
| Model | Max torque (Nm) | Max torque (ft lb) | Min length (mm) | Max length (mm) | Tool holder swivel angle max (deg) | Weight (Kg) | Weight (lb) | Tool holder interface type | Ordering No. |
|---|---|---|---|---|---|---|---|---|---|
| SMC 12 1150 | 12 | 8.9 | 516 | 1128 | 60 | 0.37 | 0.816 | A | 4390151085 |
| SMC 12 1600 | 12 | 8.9 | 666 | 1578 | 60 | 0.42 | 0.926 | A | 4390151185 |
| SMC 12 2100 | 12 | 8.9 | 835 | 2083 | 60 | 0.48 | 1.06 | A | 4390151285 |
| SMC 25 1150 | 25 | 18.4 | 524 | 1124 | 50 | 0.51 | 1.12 | A | 4390151485 |
| SMC 25 1600 | 25 | 18.4 | 674 | 1574 | 50 | 0.61 | 1.34 | A | 4390151585 |
| SMC 25 2100 | 25 | 18.4 | 841 | 2075 | 50 | 0.68 | 1.5 | A | 4390151685 |
| SMC 25 2600 | 25 | 18.4 | 1007 | 2573 | 50 | 0.77 | 1.7 | A | 4390151785 |
| SMC 50 1600 | 50 | 36.9 | 712 | 1624 | 40 | 0.95 | 2.09 | B | 4390151885 |
| SMC 50 2100 | 50 | 36.9 | 878 | 2125 | 40 | 1.05 | 2.31 | B | 4390151985 |
| SMC 50 2600 | 50 | 36.9 | 1045 | 2626 | 40 | 1.15 | 2.54 | B | 4390152085 |
| SMC 100 1600 | 100 | 73.8 | 722 | 1628 | 30 | 1.28 | 2.82 | B | 4390152285 |
| SMC 100 2100 | 100 | 73.8 | 889 | 2129 | 30 | 1.41 | 3.11 | B | 4390152385 |
| SMC 100 2600 | 100 | 73.8 | 1056 | 2630 | 30 | 1.53 | 3.37 | B | 4390152485 |
| SMC 200 1600 | 200 | 148 | 726 | 1628 | 20 | 1.98 | 4.37 | – | 4390152685 |
| SMC 200 2100 | 200 | 148 | 893 | 2129 | 20 | 2.18 | 4.81 | – | 4390152785 |
| SMC 200 2600 | 200 | 148 | 1060 | 2630 | 20 | 2.39 | 5.27 | – | 4390152885 |
| SMC 300 1600 | 300 | 221 | 744 | 1631 | 20 | 2.40 | 5.29 | – | 4390153085 |
| SMC 300 2100 | 300 | 221 | 911 | 2132 | 20 | 2.60 | 5.73 | – | 4390153185 |
| SMC 300 2600 | 300 | 221 | 1078 | 2633 | 20 | 2.81 | 6.20 | – | 4390153285 |
The HADI Technologies team will help you select the right configuration, verify application requirements and provide technical information about Atlas Copco Torque Arms (SMC) Ergonomic Reaction Arms.
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