Atlas Copco STbench User manual

STbench
Printed Matter No. 9839 0880 01 Test Bench
Publication Date 2021-04-12
Valid for Version No. 06.00x
Issue No. 13 Operation Manual
STbench
WARNING
Read all safety warnings and instructions
Failure to follow the safety warnings and instructions may result in
electric shock, fire and/or serious injury.
Save all warnings and instructions for future reference

2© Atlas Copco Industrial Technique AB - 9839 0880 01
Table of Contents
General Data Protection Regulation (GDPR)........................................................4
Legend of symbols .................................................................................................5
Introduction .............................................................................................................6
General Information ..........................................................................................6
About Operation Manual...................................................................................6
Revision history ................................................................................................7
Operation Overview ..............................................................................................16
User interfaces................................................................................................16
STbench PC / STbench Docking Station.............................................16
STbench top plate ...............................................................................17
Tilting top plate ....................................................................................18
Wrench rig ...........................................................................................19
Articulated arm ....................................................................................20
Motorized Cell......................................................................................20
Drawers ...............................................................................................27
Main panel ...........................................................................................27
Battery status indicators and Battery Charger switch..........................29
Ethernet Port .......................................................................................30
Serial cable port...................................................................................30
USB ports ............................................................................................30
External transducers sockets ..............................................................30
Start PC / Stop PC...............................................................................31
Power Supply socket ...........................................................................31
Keyboard .............................................................................................32
Handlebar ............................................................................................32
Printer support .....................................................................................32
Monitor support....................................................................................32
Flange for SRTT-B ..............................................................................33
Forklift..................................................................................................33
Getting Started ......................................................................................................34
General Information ........................................................................................34
Charging the battery .......................................................................................34
Powering On the STbench..............................................................................34
Power saving mode ........................................................................................34
Powering Off the STbench..............................................................................34
Powering Off the STbench with PC ................................................................34
Operation ...............................................................................................................35
General Safety Information.............................................................................35
Calibrating Power Focus - General Information..............................................35
Calibrating PowerMACS - General Information ..............................................36
Calibrating generic controllers - General Information .....................................36
Articulated arm - General information.............................................................37

3
© Atlas Copco Industrial Technique AB - 9839 0880 01
Technical specifications of the Articulated arm ...................................38
General safety information ..................................................................38
Installing the Articulated arm on the STbench.....................................39
Installing the brake on the Articulated arm ..........................................40
Rotating the brake placed on the Articulated arm ...............................44
Doing a test with a brake place on the Articuated arm ........................46
Basic maintenance ...............................................................................................47
Cleaning the STbench ....................................................................................47
STbench ..............................................................................................47
Touch-screen.......................................................................................47
Batteries replacement.....................................................................................47
Oil replacement...............................................................................................47
Backup of the database ..................................................................................47
Basic troubleshooting ..........................................................................................48
"Zero Static Error" message is displayed .......................................................48
"Over Torque Error" message is displayed.....................................................48

General Data Protection Regulation (GDPR) EN STbench
4© Atlas Copco Industrial Technique AB - 9839 0880 01
General Data Protection Regulation (GDPR)
This product offers the possibility to process personal identifiable information such as system user name,
role and IP-address. The purpose of this processing capability could be to enhance quality control through
traceability and proper access management.
If you decide to process personal data you need to be aware of and comply with relevant personal data
protection rules, including, in the EU the GDPR as well as other applicable laws, directives and regula-
tions. Atlas Copco can in no way be held liable for any use made by you of the product.

STbench EN Legend of symbols
© Atlas Copco Industrial Technique AB - 9839 0880 01 5
Legend of symbols
Below a list of the symbols found on the STbench:
Symbol Description
Crushing of hands
Risk of electric shock
Ethernet port
USB port
External transducer socket
Documentation must be consulted

Introduction EN STbench
6© Atlas Copco Industrial Technique AB - 9839 0880 01
Introduction
General Information
The STbench provides maximum tool evaluation flexibility. Click wrenches, power tools, peak tools as well
as pulse tools can be evaluated according to the following test protocols:
■Cm/Cmk ISO
■SPC
■ISO 5393
■ISO 6789:2003
■ISO 6789-2:2017
■CAM/Cpk CNOMO
■VDI/VDE 2645-2
■JJF 1610:2017
On the top plate of the STbench there are hydraulic brakes and/or static torque transducers.
The hydraulic brakes simulate the behavior of a real joint, reproducing the stiffness from hard to soft.
The static torque transducer is equipped by the new patented system to hold the Mechanical Test Joint.
The static torque transducer has a special bearing on the shaft to absorb and eliminate the axial force dur-
ing the test: this is to have the best possible accuracy during the test.
The STbench can operate on the assembly line simulating real joints characteristics with high precision: in
this way test conditions are very similar to the real scenarios where tools usually work.
The user-friendly software and the touch screen allow immediate and simple operations.
STbench is powered by batteries: then, it can be used directly on the assembly line.
Pulse tools can be tested only on static cells, brakes are not suitable for that tool type.
WARNING Read all safety warnings, instructions, illustrations and specifications provided
with this product.
Failure to follow all instructions listed below may result in electric shock, fire, property damage and/or
serious injury.
Save all warnings and instructions for future reference.
About Operation Manual
The Operation Manual contains information the customer needs on a day to day basis. This document is
not intended to replace the training and expertise of the end-user.
Before beginning the installation or configuration process make sure to inspect all components and acces-
sories. Contact Atlas Copco Customer Center if there are any missing or damaged items.

STbench EN Introduction
© Atlas Copco Industrial Technique AB - 9839 0880 01 7
Revision history
Software version Change
06.00x ■Tool parameters updated (for more information, see "STbench with PC
Configuration Manual / STpad Configuration Manual").
■Searching a Tool updated (for more information, see "STbench with PC
Configuration Manual / STpad Configuration Manual").
■Connected transducers updated (for more information, see "STbench
with PC Configuration Manual / STpad Configuration Manual").
■Label updated (for more information, see "STbench with PC Configura-
tion Manual / STpad Configuration Manual").
■STbench PC / STbench Docking Station updated (for more information,
see "STbench Operation Manual").
■Technical specifications updated (for more information, see "STbench
System Overview Manual").
■STbench Models added (for more information, see "STbench System
Overview Manual").
■STbench supported transducers added (for more information, see
"STbench System Overview Manual").
04.05x ■Searching a Tool/Joint/Part/Result/Route/in a Route updated (for more
information, see "STbench with PC Configuration Manual / STpad Con-
figuration Manual").
■Viewing the details of the inspection result updated (for more informa-
tion, see "STbench with PC Configuration Manual / STpad Configuration
Manual").
■Links added (for more information, see "STbench with PC Configuration
Manual / STpad Configuration Manual").
■Common settings updated (for more information, see "STbench with PC
Configuration Manual / STpad Configuration Manual").
■Tool inspections operator guidance updated (for more information, see
"STbench with PC Configuration Manual / STpad Configuration Man-
ual").
■Summary for VDI/VDE 2456-2 updated (for more information, see
"STbench with PC Configuration Manual / STpad Configuration Man-
ual").
■Legend of symbols added (for more information, see "STbench Opera-
tion Manual").
■STbench top plate updated (for more information, see "STbench Opera-
tion Manual").
■Technical specifications updated (for more information, see "STbench
System Overview Manual").

Introduction EN STbench
8© Atlas Copco Industrial Technique AB - 9839 0880 01
Software version Change
04.04x ■Navigating a forced by piece route added (for more information, see
"STbench with PC Configuration Manual / STpad Configuration Man-
ual").
■Running a forced by inspection route added (for more information, see
"STbench with PC Configuration Manual / STpad Configuration Man-
ual").
■Navigating a forced by inspection route added (for more information, see
"STbench with PC Configuration Manual / STpad Configuration Man-
ual").
■Filtering the routes using the custom fields added (for more information,
see "STbench with PC Configuration Manual / STpad Configuration
Manual").
■Searching a Route/Tool/Joint/Part/Measuring device/Controller added
(for more information, see "STbench with PC Configuration Manual /
STpad Configuration Manual").
■Tool inspections parameters updated (for more information, see
"STbench with PC Configuration Manual / STpad Configuration Man-
ual").
■Tool inspections summary categories updated (for more information,
see "STbench with PC Configuration Manual / STpad Configuration
Manual").
■Configuration menu updated (for more information, see "STbench with
PC Configuration Manual / STpad Configuration Manual").
■Common settings updated (for more information, see "STbench with PC
Configuration Manual / STpad Configuration Manual").
■Measure screen added (for more information, see "STbench with PC
Configuration Manual / STpad Configuration Manual").
■Reaction bar added (for more information, see "STbench with PC Con-
figuration Manual / STpad Configuration Manual").
■Exporting STbench logs added (for more information, see "STbench
with PC Configuration Manual / STpad Configuration Manual").
■Measure angle from (Direct driven strategy) added (for more informa-
tion, see "STbench with PC Configuration Manual / STpad Configuration
Manual").
■Main panel updated (for more information, see "STbench Operation
Manual").

STbench EN Introduction
© Atlas Copco Industrial Technique AB - 9839 0880 01 9
Software version Change
04.03x ■SPC dimensional parameters updated (for more information, see
"STbench with PC Configuration Manual / STpad Configuration Man-
ual").
■Cp/Cpk dimensional parameters updated (for more information, see
"STbench with PC Configuration Manual / STpad Configuration Man-
ual").
■Searching in a route updated (for more information, see "STbench with
PC Configuration Manual / STpad Configuration Manual").
■Navigating a forced by piece route added (for more information, see
"STbench with PC Configuration Manual / STpad Configuration Man-
ual").
■Viewing the details of the inspection results updated (for more informa-
tion, see "STbench with PC Configuration Manual / STpad Configuration
Manual").
■Calibrating generic controller updated (for more information, see
"STbench with PC Configuration Manual / STpad Configuration Man-
ual").
■Running tool inspection updated (for more information, see "STbench
with PC Configuration Manual / STpad Configuration Manual").
■Results category (tool inspections) updated (for more information, see
"STbench with PC Configuration Manual / STpad Configuration Man-
ual").
■Picture inspection and Instruction inspection parameters added (for
more information, see "STbench with PC Configuration Manual / STpad
Configuration Manual").
■Results category for Picture inspection and Instructions inspection
added (for more information, see "STbench with PC Configuration Man-
ual / STpad Configuration Manual").
■General settings updated (for more information, see "STbench with PC
Configuration Manual / STpad Configuration Manual").
■Verification code added (for more information, see "STbench with PC
Configuration Manual / STpad Configuration Manual").
■Starting the device updated (for more information, see "STbench with
PC Configuration Manual / STpad Configuration Manual").
■Cm/Cmk ISO parameters (Tool check) updated (for more information,
see "STbench with PC Configuration Manual / STpad Configuration
Manual").
■SPC parameters updated (Tool check) updated (for more information,
see "STbench with PC Configuration Manual / STpad Configuration
Manual").
■SPC rules updated (for more information, see "STbench with PC Config-
uration Manual / STpad Configuration Manual").
■SPC, results, limits and rules updated (for more information, "STbench
with PC Configuration Manual / STpad Configuration Manual").
■SIGOP/SCOUP integration added (for more information, see "STbench
with PC Configuration Manual / STpad Configuration Manual").
■Power saving mode added (for more information, see "STbench Opera-
tion Manual").
■Main panel updated (for more information, see "STbench Operation
Manual").
■Troubleshooting updated (for more information see"STbench System
Overview Manual").

Introduction EN STbench
10 © Atlas Copco Industrial Technique AB - 9839 0880 01
Software version Change
04.02x ■General manual update (for more information, see "STbench with PC
Configuration Manual / STpad Configuration Manual").
■Filtering a route added (for more information, see "STbench with PC
Configuration Manual / STpad Configuration Manual").
■Results updated (for more information, see "STbench with PC Configu-
ration Manual / STpad Configuration Manual").
■Tool inspections updated (for more information, see "STbench with PC
Configuration Manual / STpad Configuration Manual").
■Filtering the results updated (for more information, see "STbench with
PC Configuration Manual / STpad Configuration Manual").
■Exporting the results added (for more information, see "STbench with
PC Configuration Manual / STpad Configuration Manual").
■Tool parameters updated (for more information, see "STbench with PC
Configuration Manual / STpad Configuration Manual").
■Summary for JJF 1610:2017 added (for more information, see "STbench
with PC Configuration Manual / STpad Configuration Manual").
■SPC rules updated (for more information, see "STbench with PC Config-
uration Manual / STpad Configuration Manual").
■JJF 1610:2017 parameters added (for more information, see "STbench
with PC Configuration Manual / STpad Configuration Manual").
■Summary for JJF 1610:2017 added (for more information, see "STbench
with PC Configuration Manual / STpad Configuration Manual").
■General settings updated (for more information, see "STbench with PC
Configuration Manual / STpad Configuration Manual").
■Cam-over strategy added (for more information, see "STbench with PC
Configuration Manual / STpad Configuration Manual").
■Strategies parameters updated (for more information, see "STbench
with PC Configuration Manual / STpad Configuration Manual").
■Messages displayed while running a test on the Motorized cell (for more
information, see"STbench Operation Manual").

STbench EN Introduction
© Atlas Copco Industrial Technique AB - 9839 0880 01 11
Software version Change
04.01x ■ISO 6789-2:2017 added (for more information, see "STbench with PC
Configuration Manual / STpad Configuration Manual").
■Tool parameters updated (for more information, see "STbench with PC
Configuration Manual / STpad Configuration Manual").
■Traceability tag updated (for more information, see "STbench with PC
Configuration Manual / STpad Configuration Manual").
■Open Protocol added (for more information, see "STbench with PC Con-
figuration Manual / STpad Configuration Manual").
■General manual update ("STbench with PC Configuration Manual /
STpad Configuration Manual").
■Motorized cell added (for more information, see "STbench Operation
Manual").
■Running a test on the Motorized Cell added (for more information, see
"STbench Operation Manual")
■Power supply socket updated (for more information, see "STbench Op-
eration Manual").
■General Safety information added (for more information, see "STbench
Operation Manual").
■Charging the battery updated (for more information, see "STbench Op-
eration Manual").
■Technical specifications updated (for more information, see "STbench
System Overview Manual").
04.00x ■Route updated (for more information, see "STbench with PC Configura-
tion Manual / STpad Configuration Manual").
■Results updated (for more information, see "STbench with PC Configu-
ration Manual / STpad Configuration Manual").
■Summary category for SPC and ISO 6789 updated (for more informa-
tion, see "STbench with PC Configuration Manual / STpad Configuration
Manual").
■Adding a visual check inspection updated (for more information, see
"STbench with PC Configuration Manual / STpad Configuration Man-
ual").
■Adding a dimensional check updated (for more information, see
"STbench with PC Configuration Manual / STpad Configuration Man-
ual").
■Connected transducers added (for more information, see "STbench with
PC Configuration Manual / STpad Configuration Manual").
■Restore added (for more information, see "STbench with PC Configura-
tion Manual / STpad Configuration Manual").
■Exporting log added (for more information, see "STbench with PC Con-
figuration Manual / STpad Configuration Manual").
■Tool check testing updated (for more information, see "STbench with PC
Configuration Manual / STpad Configuration Manual").

Introduction EN STbench
12 © Atlas Copco Industrial Technique AB - 9839 0880 01
Software version Change
03.01x ■Searching a Route updated (for more information, see "STbench with
PC Configuration Manual / STpad Configuration Manual").
■Editing a tool updated (for more information, see "STbench with PC
Configuration Manual / STpad Configuration Manual").
■Tool inspections updated (for more information, see "STbench with PC
Configuration Manual / STpad Configuration Manual").
■Results category updated (for more information, see "STbench with PC
Configuration Manual / STpad Configuration Manual").
■Summary category for Cm/Cmk and SPC updated (for more information,
see "STbench with PC Configuration Manual / STpad Configuration
Manual").
■Trace category updated (for more information, see "STbench with PC
Configuration Manual / STpad Configuration Manual").
■Joints updated (for more information, see "STbench with PC Configura-
tion Manual / STpad Configuration Manual").
■Joint inspections updated (for more information, see "STbench with PC
Configuration Manual / STpad Configuration Manual").
■Part updated (for more information, see "STbench with PC Configuration
Manual / STpad Configuration Manual").
■Part inspections updated (for more information, see "STbench with PC
Configuration Manual / STpad Configuration Manual").
■Summary category for Cp/Cpk and SPC (joint) added (for more informa-
tion, see "STbench with PC Configuration Manual / STpad Configuration
Manual").
■Users added (for more information, see "STbench with PC Configuration
Manual / STpad Configuration Manual").
■General settings added (for more information, see "STbench with PC
Configuration Manual / STpad Configuration Manual").

STbench EN Introduction
© Atlas Copco Industrial Technique AB - 9839 0880 01 13
Software version Change
03.00x ■Running a Route updated (for more information, see "STbench with PC
Configuration Manual / STpad Configuration Manual").
■Dimensional inspection added (for more information, see "STbench with
PC Configuration Manual / STpad Configuration Manual").
■Pairing and connecting IRC-Connect updated (for more information, see
"STbench with PC Configuration Manual / STpad Configuration Man-
ual").
■Controllers updated (for more information, see "STbench with PC Con-
figuration Manual / STpad Configuration Manual").
■Quick programming updated (for more information, see "STbench with
PC Configuration Manual / STpad Configuration Manual").
■SPC rules updated (for more information, see "STbench with PC Config-
uration Manual / STpad Configuration Manual").
■Label printing updated (for more information, see "STbench with PC
Configuration Manual / STpad Configuration Manual").
■Tightening check types added (for more information, see "STbench with
PC Configuration Manual / STpad Configuration Manual").
■Strategies added (for more information, see "STbench with PC Configu-
ration Manual / STpad Configuration Manual").
■Glossary added (for more information, see "STbench with PC Configura-
tion Manual / STpad Configuration Manual").
■Calibration Power Focus updated (for more information, see "STbench
Operation Manual).
■Calibration PowerMACS updated (for more information, see "STbench
Operation Manual).
■Calibration Generic controller updated (for more information, see
"STbench Operation Manual).
■Technical specification updated (for more information, see "STbench
System Overview Manual).
■Troubleshooting updated (for more information, see "STbench with PC
Troubleshooting and Service Manual").

Introduction EN STbench
14 © Atlas Copco Industrial Technique AB - 9839 0880 01
Software version Change
02.00x ■Security windows machine added (for more information, see "STbench
with PC Configuration Manual / STpad Configuration Manual").
■General information updated (for more information, see "STbench with
PC Configuration Manual / STpad Configuration Manual").
■Parts added (for more information, see "STbench with PC Configuration
Manual / STpad Configuration Manual").
■Visual inspection (attribute, binary and dimensional) added (for more in-
formation, see "STbench with PC Configuration Manual / STpad Config-
uration Manual").
■Cm/Cmk and SPC only angle inspection added (for more information,
see "STbench with PC Configuration Manual / STpad Configuration
Manual").
■Battery status indicators and Battery Charger switch updated (for more
information, see "STbench Operation Manual").
■Tilting top plate added (for more information, see "STbench Operation
Manual").
■Printing support added (for more information, see "STbench Operation
Manual").
■Monitor support added (for more information, see "STbench Operation
Manual").
■Flange for SRTT-B added (for more information, see "STbench Opera-
tion Manual").
■Forklift added (for more information, see "STbench Operation Manual").
■Installing Articulated arm added (for more information, see "STbench
Operation Manual").
■Technical specifications updated (for more information, see "STbench
System Overview Manual").
■General information updated (for more information, see "STbench with
PC Troubleshooting and Service Manual").
01.03x ■GDPR Compliance (for more information, see "STbench with PC Config-
uration Manual / "STbench System Overview Manual" / "STbench Oper-
ation Manual" / "STbench with PC Troubleshooting and Service Man-
ual")
■VDI/VDE 2645-2 added (for more information, see "STbench with PC
Configuration Manual / STpad Configuration Manual")
■Cp/Cpk inspection added (for more information, see "STbench with PC
Configuration Manual / STpad Configuration Manual")
■SPC (joint) inspection added (for more information, see "STbench with
PC Configuration Manual / STpad Configuration Manual")
■Pairing and connecting STwrench added (for more information, see
"STbench with PC Configuration Manual / STpad Configuration Man-
ual")
■Technical specifications updated (for more information, see "STbench
System Overview Manual")
■Articulated arm added (for more information, see "STbench Operation
Manual")

STbench EN Introduction
© Atlas Copco Industrial Technique AB - 9839 0880 01 15
Software version Change
01.02x ■Results list (for more information, see "STbench with PC Configuration
Manual / STpad Configuration Manual")
■Calibration inspection (for more information, see "STbench with PC
Configuration Manual / STpad Configuration Manual")
■Controllers (for more information, see "STbench with PC Configuration
Manual / STpad Configuration Manual")
■Calibrating the Power Focus (for more information, see "STbench Oper-
ation Manual / STpad Operation Manual")
■Calibrating the Power MACS (for more information, see "STbench Oper-
ation Manual / STpad Operation Manual")
■Calibrating the generic controllers (for more information, see "STbench
Operation Manual / STpad Operation Manual")
01.01x ■First edition of "STbench with PC Configuration Manual"
■First edition of "STbench System Overview Manual"
■First edition of "STbench Operation Manual"
■First edition "STbench Troubleshooting and Service Manual"

Operation Overview EN STbench
16 © Atlas Copco Industrial Technique AB - 9839 0880 01
Operation Overview
User interfaces
Below are the user interfaces of the STbench:
A STbench PC / STbench Docking Station B STbench top plate
C Wrench Rig D Drawers
E Main panel F Keyboard
G Handlebar
STbench PC / STbench Docking Station
There are two types of interfaces of STbench: the first one holds the PC, while the second one holds the
Docking Station. The Docking Station is the housing of the STpad.
Both PC and STpad have a touch-screen.
Operate the STbench with Docking Station only with the STpad (for more information, see the STpad
Manuals).
The PC installed on STbench with PC must meet the following requirements:
■separately certified and fulfilling the national requirements in the countries in which it is to be used
■nominal operating voltage: 24 Vdc (extended range 23 ÷ 28 Vdc)
■maximum current consumption: 5 A
■maximum operating temperature: + 40 °C
■Operating system: Windows 10
■Display: 1920 (W) x 1080 (H)
■CPU: Intel Core i5-5350U 1.8 GHz
■Memory: 250 GB

STbench EN Operation Overview
© Atlas Copco Industrial Technique AB - 9839 0880 01 17
■RAM: 8 GB
■Connectivity:
■WLAN: Wi-Fi IEEE 802.11 a/b/g/n/ac
■Bluetooth V4.0
■USB 3.0
■Ethernet
STbench top plate
The STbench top plate holds hydraulic brakes and/or static torque transducers.
The hydraulic brakes simulate the behavior of a real joint, reproducing the stiffness from hard to soft.
The number of brakes on the STbench top plate ranges according to customer needs.
The hydraulic brakes make a test to:
■Power tools (not impulse)
■Click wrenches
■Peak tools
Never test pulse tools and impact wrenches on hydraulic brakes. There is the high risk of hydraulic
brake rupture.
Use a suitable adapter to install the power tool / click wrench / peak tool on the hydraulic brake.
The static torque transducers are designed for testing wrenches, click wrenches or for tightening tools
where rotary action is not desired during measurement.
The number of static torque transducers on the STbench top plate ranges according to customer needs.
The static torque transducers can be used to test:
■Pulse tools without shut-off
■Pulse tools with shut-off (in case of pulse tools with shut-off mechanism, install a mechanical joint
simulator on the static torque transducer - for more information see "Installing a mechanical joint sim-
ulator in the housing of the static torque transducer")
■Wrenches
■Power tools (in case there are no hydraulic brakes available. In this case install a mechanical joint
simulator on the static torque transducer to let the spindle of the power tool rotate - for more informa-
tion see "Installing a mechanical joint simulator in the housing of the static torque transducer")
Never test impact wrenches on static torque transducers. There is the high risk of static torque trans-
ducer rupture.
To make sure that the operator benefits from the full potential power of tools, we recommend to use the
reaction bar during the tightening operations on the STbench.
The reaction bar makes sure a safety measurement both on hydraulic brakes and static torque transduc-
ers.
Use the reaction bar with a diameter equal to 30mm for hydraulic brakes / static torque transducers up to
500Nm.
WARNING Crushing Hazard
Hands may get squeezed during tightening operations through the reaction bar.
►When a reaction bar is used, keep hands away from the reaction bar while tightening a joint.
We recommend to use using the reaction bar for tightening operations over 10 N·m.
Use the reaction bar for tightening operations over 15 N·m.
Pay attention: the reaction point of the tool under test must be under the height of the reaction bar.

Operation Overview EN STbench
18 © Atlas Copco Industrial Technique AB - 9839 0880 01
Installing a mechanical joint simulator in the housing of the static torque
transducer
1. Insert the mechanical joint simulator in the housing of the static torque transducer.
2. Tighten the lever of the static torque transducer (clockwise) before starting the test, to make the zero
alignment correctly.
Tilting top plate
The STbench can be equipped with a top plate that can be tilt with a maximum angle of 90 degrees. This
configuration allows testing tools in horizontal position.
Tilting top models require a different frame.
A Tilting top plate in vertical
position
The STbench with the tilted top plate has the same functionalities of the standard STbench.
In the main panel, two additional buttons allow to tilt the top plate from the horizontal position (0 degrees)
to the vertical position (max 90 degrees).

STbench EN Operation Overview
© Atlas Copco Industrial Technique AB - 9839 0880 01 19
Push the button Vertical to tilt the plate to the vertical position (90 degrees).
Push the button Horizontal to tilt the plate to the horizontal position (0 degrees).
In this STbench model, an additional motor moves the top plate. Two limit-switches ensure that the motor
stops when the limit positions are reached.
Before moving the top plate, ensure that no object is on it and no tool/adapter is placed on the trans-
ducers. Keep clear the area and do not touch the top plate while it is moving.
The motion of the top plate stops when the emergency button is pressed.
Time to tilt from horizontal to vertical position is less than 30 seconds
Wrench rig
The wrench rig is an optional accessory installed on the free side of the STbench top plate.
The main purpose of the wrench rig is applying torque to the wrenches under test in an easy and precise
way. In this way the wrench rig minimizes the contact stress and reduces excessive vibration, especially
for tests which apply high torques to the wrenches under test.
The wrench rig is a sliding system able to adapt to the length of each type of wrench.
Adjusting the wrench rig
1. Unlock the sliding system by turning counterclockwise the two fixing knobs.
2. Adjust the wrench rig depending on the length of the wrench under test.
3. Adjust the wrench rig bar by turning the handwheel.
Let the wrench rig bar be in touch only with the handle of the wrench. Never put the wrench rig
bar in touch with the body of the wrench.
4. Lock the sliding system by turning clockwise the two fixing knobs.

Operation Overview EN STbench
20 © Atlas Copco Industrial Technique AB - 9839 0880 01
Articulated arm
The “Articulated Arm” provides a transducer installed in the upside-down position. This configuration al-
lows to execute tests in special applications where the tools cannot be tested with the standard bench.
Motorized Cell
The Motorized Cell is a torque transducer that can be installed on the STbench large frame in order to au-
tomatize torque wrench tests, thus reducing the operator influence on the measurements.
The Motorized Cell is fully compliant with ISO 6789:2017.