HIGH-TORQUE SUPPORT · OPTIONAL POSITION DETECTION

KR007B High-Torque Linear Reaction Arm

The KURAN KR007B combines a robust linear structure with spring-balanced tool support for high-torque tightening applications, with configurations rated up to 1000 Nm.

Choose a non-sensing version for mechanical support, or add XY / XYZ position detection to support fastening-point verification and sequence control when integrated with a compatible workstation controller.

Up to 1000 Nm Reaction Torque Capacity
Robust Linear Structure
Spring Balancer Matched to Tool Weight
Optional XY / XYZ Position Detection

Get a KR007B Recommendation View Specifications

KURAN KR007B high-torque linear reaction arm

High-Torque Tightening

Your workstation needs to absorb substantial reaction torque during fastening. Evaluate the required torque rating together with tool orientation, movement range, and mounting conditions to select a suitable KR007B configuration.

Heavy Tools and Repetitive Handling

Operators repeatedly hold and reposition a heavy tightening tool. A spring balancer matched to the combined weight of the tool and its accessories helps reduce handling effort while the arm supports the tightening operation.

Multiple Fastening Points with Position Verification

Your process needs to check whether the tool has reached the intended fastening point. Consider optional XY or XYZ detection with a compatible controller to support point verification and the required tightening sequence.

Confirm Your Workstation Requirements Before Selection

Torque capacity is only one part of the decision. Share the following information so KURAN can assess the arm configuration, tool support, installation, and any position-control requirements.

Required Torque
Tool Model & Total Supported Weight
Fastening-Point Layout
Required Reach & Travel
Mounting Space & Orientation
Position-Control Requirements

KURAN KR007B structure diagram showing the spring balancer, horizontal guide shafts, optional angle sensor and draw-wire sensor

Robust Linear Structure

The column, horizontal guide shafts, and fixed base form a sturdy support structure. During tightening, the arm transfers reaction torque from the tool to the mounting structure, helping reduce the force the operator needs to resist.

Tool Weight Balancing

A spring balancer is matched to the combined weight of the tightening tool and its accessories. Proper balancing helps reduce the effort of holding and repositioning the tool during repetitive fastening operations.

Customizable Horizontal Arm Length

Horizontal arm length can be customized to suit your fastening-point layout and available space. Required reach, supported load, and reaction torque are reviewed together before the configuration is confirmed.

Optional Position Detection

Sensor-equipped configurations use position sensors to provide tool-position data. When connected to a compatible workstation controller, this data can support fastening-point verification and tightening sequence control. Sensors are optional.

KR007B application video for engine assembly.
Watch on YouTube

APPLICATION VIDEO

See KR007B in Action

Explore KURAN’s KR007B application video for engine assembly. Use this example to discuss the tool movement, working range, and installation arrangement required at your workstation.

Tool Movement and Working Reach
Consider how the tool needs to travel between fastening points and whether the required movement fits your workpiece and fixture layout.
Tool Support and Handling
Assess the tool connection and balancing requirements for your tightening tool, socket, adapter, and other fitted accessories.
Workstation Installation
Compare the available mounting space, fastening direction, and operator access with the arrangement your own workstation needs.

Share your tool model, torque requirement, and workstation photos or video. KURAN can help evaluate a suitable KR007B configuration for your application.

Discuss My KR007B Application

No Position Sensor

Select a non-sensing configuration when the arm is needed for reaction torque control and balanced tool handling. This version does not provide position data for fastening-point verification.

Consider this when Your workstation requires mechanical tool support without position-based process control.

XY Position Detection

Select XY detection when your process needs to distinguish fastening locations in a plane. Position data can be evaluated by a compatible controller against taught fastening points.

Consider this when Fastening points can be identified using XY position, without a separate height check.

XYZ Position Detection

Select XYZ detection when vertical position also matters. The additional detection dimension helps the controller distinguish fastening zones that cannot be reliably separated by XY position alone.

Consider this when Your process needs to distinguish fastening points at different heights or verify vertical tool position.

Match Detection to Your Fastening-Point Layout

Choose detection dimensions around the actual fastening points, tool movement, and required verification zones. A higher number of detection dimensions is useful only when the process needs that additional information.

Your Workstation Requirement	Configuration to Evaluate	What to Confirm
Reaction torque control and tool weight support, without position verification	N — No position sensor	Torque rating, total supported weight, reach, and mounting conditions.
Fastening-point recognition using planar position	M — XY detection	Whether the taught XY zones can distinguish all required fastening points.
Point recognition that also requires vertical position verification	MZ — XYZ detection	Required height discrimination, vertical travel, and controller support.

Position detection requires system integration. Sensors provide position data. Fastening-point recognition, tightening authorization, and sequence management require a compatible workstation controller and suitable tool interfaces. Position sensors do not measure tightening torque.

Understand the KR007B Model Code

Model codes identify the arm structure, position detection, torque rating, dimensional variant, and sensor signal interface. Select the signal type according to the controller being integrated.

XY configuration example KR007B-LM-150R480S

Code	Meaning	Available Options / Explanation
KR007B	Product series	KR007B high-torque linear reaction arm.
L	Arm structure	Linear structure.
N / M / MZ	Position detection	N: no sensor; M: XY position detection; MZ: XYZ position detection.
150	Reaction torque rating	Catalog options: 150, 300, 500, and 1000 Nm.
R480	Catalog dimension suffix	Refer to the corresponding model’s specification table and dimension drawing for dimensional details.
A / S	Sensor signal interface	A: 0–10V analog output; S: RS485 digital communication. Applies to sensor-equipped configurations.

Get a Configuration Recommendation View Specifications & Dimensions

Non-Sensing Models

Mechanical support configurations without position sensors. All linear dimensions below are in millimeters.

Model	Reaction Torque Nm	Default Load kg	Rmm	Emm	Dmm	Hmm	ØAmm	Wmm	Sensor Signal
KR007B-LN-150R480	150	12	480	260	400	1130	20	40	None
KR007B-LN-300R530	300	16	530	280	370	1230	25	50	None
KR007B-LN-500R570	500	20	570	320	440	1330	30	50	None
KR007B-LN-1000R600	1000	20	600	350	310	1430	30	50	None

XY Position Detection Models

XY sensor configurations with analog or digital signal options. A: 0–10V analog output. S: RS485 digital communication.

Model	Reaction Torque Nm	Default Load kg	Rmm	Emm	Dmm	Hmm	ØAmm	Wmm	Sensor Signal
KR007B-LM-150R480A	150	12	480	260	400	1170	20	40	A · 0–10V
KR007B-LM-150R480S	150	12	480	260	400	1170	20	40	S · RS485
KR007B-LM-300R530A	300	16	530	280	370	1270	25	50	A · 0–10V
KR007B-LM-300R530S	300	16	530	280	370	1270	25	50	S · RS485
KR007B-LM-500R570A	500	20	570	320	440	1370	30	50	A · 0–10V
KR007B-LM-500R570S	500	20	570	320	440	1370	30	50	S · RS485
KR007B-LM-1000R600A	1000	20	600	350	310	1470	30	50	A · 0–10V
KR007B-LM-1000R600S	1000	20	600	350	310	1470	30	50	S · RS485

XYZ Position Detection Models

XYZ sensor configurations for processes that also require vertical position detection. Select the signal interface to match the workstation controller.

Model	Reaction Torque Nm	Default Load kg	Rmm	Emm	Dmm	Hmm	ØAmm	Wmm	Sensor Signal
KR007B-LMZ-150R480A	150	12	480	260	400	1170	20	40	A · 0–10V
KR007B-LMZ-150R480S	150	12	480	260	400	1170	20	40	S · RS485
KR007B-LMZ-300R530A	300	16	530	280	370	1270	25	50	A · 0–10V
KR007B-LMZ-300R530S	300	16	530	280	370	1270	25	50	S · RS485
KR007B-LMZ-500R570A	500	20	570	320	440	1370	30	50	A · 0–10V
KR007B-LMZ-500R570S	500	20	570	320	440	1370	30	50	S · RS485
KR007B-LMZ-1000R600A	1000	30	600	350	310	1470	30	50	A · 0–10V
KR007B-LMZ-1000R600S	1000	20	600	350	310	1470	30	50	S · RS485

Default load: Values shown are the catalog default loads, not a universal maximum payload rating. Balancer selection should account for the tightening tool, adapter, socket, and fitted accessories.

Installation Dimensions and Mounting Reference

Use the drawings to identify R, E, D, H, ØA, and W, then check the dimensions for your selected model. The arm drawing shows a sensor-equipped configuration.

KURAN KR007B torque reaction arm dimension drawing showing R, E, D, H, diameter A and W — Arm dimensions · Open full-size drawing

KURAN KR007B base mounting drawing showing bolt circle diameter, base diameter and mounting hole diameter — Base mounting dimensions · Open full-size drawing

Catalog Base Mounting Dimensions

Catalog Reference Model	P.C.Dmm	ØGmm	ØCmm
KR007B-LM-150R480	100	119	11
KR007B-LM-300R530	110	129	11
KR007B-LM-500R570	130	149	11
KR007B-LM-1000R600	140	179	11

P.C.D: bolt circle diameter. ØG: base diameter. ØC: mounting hole diameter. Confirm the mounting arrangement for the ordered configuration.

Confirm My KR007B Configuration

Connect the Arm to Your Tightening Tool

Tool compatibility depends on more than the torque rating. KURAN evaluates the tool housing, mounting interface, fastening direction, and total supported weight to select a suitable adapter or customized connection.

Tool brand, model, and housing dimensions
Mounting interface and available clamping space
Fastening direction and required tool movement
Combined tool, socket, and accessory weight

KR005 Tool Adapters

Explore standard and customized tool connections. The adapter for your KR007B is selected around the actual tool and mounting requirements.

Explore Tool Adapters

Add Workstation Control to Sensor-Equipped Configurations

KR007B position sensors provide data for a compatible controller to evaluate. Controller selection depends on the required point management, operator guidance, data handling, and tightening-tool interfaces.

POINT & PROGRAM MANAGEMENT

KR002-B01 Workstation Tightening Controller

Consider this controller for basic fastening-point management, program selection, sequence control, and OK / NOK feedback within a defined workstation process.

View B01 Controller

VISUAL GUIDANCE & TRACEABILITY

KR002-H01 Supervisory Tightening Controller

Consider this controller when your process requires visual fastening-point guidance, more detailed tightening records, or assembly traceability. Available data depends on the connected tool and system configuration.

View H01 Controller

Add Accessories Where Your Process Needs Them

Socket selection and visual status feedback are optional additions. Include them when they address a specific workstation requirement.

Socket Selection Error-Proofing

For processes using different sockets, a KR004 Smart Socket Selector can help identify the selected socket and support the corresponding program or process check through a compatible control system.

Explore KR004 Socket Selection

Visual Workstation Status

A KR004-3SD Three-Color Tower Light can display workstation status, warnings, or tightening results. Indication logic is configured to match the workstation’s control signals.

Explore KR004-3SD Status Indication

How the system works together: The arm supports the tool and absorbs reaction torque. Optional sensors provide position data. The controller manages workstation logic. The tightening tool controls tightening torque. Signal compatibility, program selection, and result feedback are reviewed for the selected configuration.

Discuss My Tool and Integration Requirements

KR007B Frequently Asked Questions

Find answers about KR007B configurations, position detection, controller integration, and the information needed to select a suitable model.

What is the difference between KR007 and KR007B?

Both KR007 and KR007B are high-torque linear reaction arms with catalog ratings up to 1000 Nm and spring balancers matched to tool weight. Their mechanical layouts and installation dimensions differ.

The catalog lists KR007 in non-sensing configurations, while KR007B offers no sensor, XY detection, and XYZ detection options. KR007B also has non-sensing versions, so it should not be treated simply as a KR007 with sensors added.

Does every KR007B include position sensors?

Should I choose XY or XYZ position detection?

Do I need a controller to use KR007B?

The arm’s mechanical support functions do not require a separate positioning controller. For fastening-point verification, tightening authorization, or sequence management, a sensor-equipped arm must work with a compatible control system and suitable tool interfaces.

The tightening tool remains responsible for torque control. Position sensors provide position data; they do not measure tightening torque.

How is the spring balancer selected?

What information should I provide for a recommendation?

Please provide the required torque, tool brand and model, total supported weight, fastening-point layout, required reach and travel, and mounting conditions. Also indicate whether you need position detection, sequence control, or tightening data records.

Workstation photos, tool drawings, or a short operation video can help KURAN assess the application. Send your workstation requirements to request a configuration recommendation.

Configure KR007B for Your Workstation

Share your tightening torque, tool model and weight, fastening-point layout, and mounting conditions. KURAN will help recommend a suitable KR007B configuration, tool adapter, and position-detection options. If some details are unknown, send the information you have.