What is a reaction arm used for in a tightening station?

A reaction arm absorbs the reaction torque from high-torque tools, eliminating torsional stress on the operator's wrist. It allows working at torques up to 200 Nm without injury risk, improves ergonomics and keeps the tool precisely positioned at the tightening point.

What is the difference between a linear, swivel and carbon reaction arm?

The linear arm (10–150 Nm vertical, 8–100 Nm horizontal) is for benches or stations with sufficient space. The swivel arm has the same capacity but is designed for stations with limited space and integrates 2 digital angle sensors. The carbon arm is telescopic, lightweight and offers a wider work scope, in 20, 55, 100 and 200 Nm versions.

What is the Danikor OPT-SFC-C1-V2 arm controller?

It is the Danikor controller for positioning arms. It coordinates the arm so screws are tightened in the correct order and human error is avoided. It offers permission management (operators run, higher levels set parameters), communicates with the PLC to call tightening tasks and can be used with handheld screwdrivers.

Reaction Arms and Torque Arms for Industrial Assembly

The Essential Complement for Safe High-Torque Assembly

Tool reaction tires and injures the operator, especially in high-torque tightening. A reaction arm absorbs it, keeps the tool aligned with the fastener and, in the positioning version, verifies that every screw is tightened in the correct order.

Danikor Arm Types

Linear: 10–150 Nm vertical · 8–100 Nm horizontal
Swivel: same capacity, for stations with limited space
Carbon telescopic: 20, 55, 100 and 200 Nm versions
Counterforce: 100 Nm, 8 kg load, with pneumatic counterbalance
Frame arms (A and B series): 60, 160 and 300 Nm, stroke up to 5.3 × 5.3 m

Benefits

No reaction at the operator's wrist
More consistent tightening and fewer NOK rejections
Meets ergonomics and occupational health programs

≥5 mmMin. screw spacing

14 kgMax. tool load

5.3 mFrame arm stroke

200 NmCarbon arm

Arm Types

Linear · Swivel · Carbon · Counterforce · Frame

Mounting

Workbench · Station profiles · Overhead frame

Fixture

Per tool shape (ordered separately)

Distribution

Saltillo · Monterrey · Mexico

Ergonomic Safety Positioning High torque

Danikor Line

Reaction Arms for Every Application

Available in positioning (RS485 encoder, minimum screw spacing from ≥ 5 mm depending on model) or no-positioning versions — selected based on your tightening process requirements.

Danikor Linear Reaction Arm — with and without RS485 positioning for high-torque assembly

Linear Arm

Linear Arm — With and Without Positioning

Simple, lightweight reaction arm for workbenches or stations with sufficient space. RS485 encoder version enables screw-by-screw guided tightening sequences.

Vertical torque: 10 / 25 / 50 / 150 Nm
Horizontal torque: 8 / 20 / 35 / 100 Nm
Tool load: up to 14 kg (0–1, 1–3, 3–5 or 5–14 kg by model)
Positioning version: 1 digital angle sensor + 1 displacement sensor (RS485); minimum spacing ≥ 5 mm (≥ 10 mm on 150 Nm)
No-positioning version: free movement across the full work area
Tightening sequence configurable via OPT-SFC-C1-V2 arm controller

Linear V: 10–150 Nm · H: 8–100 Nm With · Without Positioning

Danikor Swivel Reaction Arm — 2 digital angle sensors for restricted-access cells

Swivel Arm

Swivel Arm — For Restricted-Access Cells

Articulated reaction arm for assembly cells with limited horizontal space. Same load and torque capacity as the linear arm, with 2 integrated digital angle sensors for precise positioning.

Vertical torque: 10 / 25 / 50 / 150 Nm
Horizontal torque: 8 / 20 / 35 / 100 Nm
Tool load: up to 14 kg (0–1, 1–3, 3–5 or 5–14 kg by model)
2 digital angle sensors; minimum spacing ≥ 5 mm (≥ 12 mm on 150 Nm)
Positioning and no-positioning versions available
Ideal for assembly lines where spatial access is restricted
Tightening sequence configurable via OPT-SFC-C1-V2 arm controller

Swivel V: 10–150 Nm · H: 8–100 Nm 2 Angle Sensors

Carbon Arm

Carbon Telescopic Arm — up to 200 Nm

Telescopic carbon fiber arm with a wider work scope. Lightweight, smooth-moving and strongly torque resistant, with positioning by angle and pull-cord encoders.

Maximum torque: 20 / 55 / 100 / 200 Nm by model
Extension stroke: 550 – 1,050 mm
Positioning version: 1 or 2 angle encoders + built-in pull-cord encoder; minimum spacing ≥ 15 mm
Positioning and no-positioning versions available
Tightening sequence configurable via OPT-SFC-C1-V2 arm controller

Carbon 200 Nm Telescopic

Counterforce Arm

Counterforce Arm — Pneumatic Counterbalance

Carbon fiber arm with integrated pneumatic counterbalance to ergonomically compensate tool weight. Mounts on standard site profiles of the installation.

Maximum torque: 100 Nm · Max. load: 8 kg · carbon fiber
Integrated pneumatic counterbalance — flexible tool-weight adjustment
Mounts on standard site profiles · folds right or left
Positioning (RS485) and no-positioning versions available
Accepts Danikor clamping fixtures and custom solutions
Tightening sequence configurable via OPT-SFC-C1-V2 arm controller

Counterforce 100 Nm With · Without Positioning

Positioning Control

Arm Controller OPT-SFC-C1-V2

Ordered Tightening and Permission Management

The OPT-SFC-C1-V2 controller works with the Danikor positioning arm so screws are tightened in the correct order and human error is avoided.

Permission management: operators run, higher levels set parameters and system configuration
Fast positioning and setup, multi-channel and rapid response
PLC communication to call tightening tasks
Works with handheld screwdrivers and graphical task management

Model

OPT-SFC-C1-V2

Compatible

Danikor positioning arms

Integration

PLC · Handheld screwdrivers

OPT-SFC-C1-V2 Positioning PLC Permission management

Reaction Arms & Torque Arms