Atlas Copco QST42-50CT-T50-L334-H13 Instruction sheet

QST42-50CT-T50-L334-H13
Printed Matter No. 9839 1200 01 Electric straight nutrunner
Publication Date 2021-07-16
Valid from Serial No. G0440001
Valid to Serial No. G3619999 Product Instructions
QST42-50CT-T50-L334-H13
(10-50 Nm)
8435408325
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 1200 01
Table of Contents
Product information................................................................................................3
General information ..........................................................................................3
Safety signal words ...............................................................................3
Warranty ................................................................................................3
ServAid ..................................................................................................3
Website..................................................................................................4
Safety Data Sheets MSDS/SDS............................................................4
Country of origin ....................................................................................4
Dimensional drawings ...........................................................................4
Overview...........................................................................................................4
Technical data for QST Nutrunners.......................................................4
Service overview...............................................................................................5
Service recommendations .....................................................................5
Installation ...............................................................................................................6
Installation requirements...................................................................................6
Clamping ...............................................................................................6
Motor connector.....................................................................................6
Compression spring...............................................................................6
Service .....................................................................................................................7
Preventing ESD problems ................................................................................7
Maintenance instructions ..................................................................................7
Service recommendations .....................................................................7
Recycling .................................................................................................................8
Recycling instruction.........................................................................................8
Recycling information for QST (34-150Nm)......................................................8

QST42-50CT-T50-L334-H13 EN Product information
© Atlas Copco Industrial Technique AB - 9839 1200 01 3
Product information
General information
WARNING Risk of Property Damage or Severe Injury
Ensure that you read, understand and follow all instructions before operating the tool. Failure to follow
all the instructions may result in electric shock, fire, property damage and/or severe bodily injury.
►Read all Safety Information delivered together with the different parts of the system.
►Read all Product Instructions for installation, operation and maintenance of the different parts of
the system.
►Read all locally legislated safety regulations regarding the system and parts thereof.
►Save all Safety Information and instructions for future reference.
Safety signal words
The safety signal words Danger, Warning, Caution, and Notice have the following meanings:
DANGER DANGER indicates a hazardous situation which, if not avoided, will result in death or se-
rious injury.
WARNING WARNING indicates a hazardous situation which, if not avoided, could result in death or
serious injury.
CAUTION CAUTION, used with the safety alert symbol, indicates a hazardous situation which, if
not avoided, could result in minor or moderate injury.
NOTICE NOTICE is used to address practices not related to personal injury.
Warranty
■Product warranty will expire 12 months after the product is first taken into use, but will in any case ex-
pire at the latest 13 months after delivery.
■Normal wear and tear on parts is not included within the warranty.
■Normal wear and tear is that which requires a part change or other adjustment/overhaul during
standard tools maintenance typical for that period (expressed in time, operation hours or other-
wise).
■The product warranty relies on the correct use, maintenance, and repair of the tool and its component
parts.
■Damage to parts that occurs as a result of inadequate maintenance or performed by parties other
than Atlas Copco or their Certified Service Partners during the warranty period is not covered by the
warranty.
■To avoid damage or destruction of tool parts, service the tool according to the recommended mainte-
nance schedules and follow the correct instructions.
■Warranty repairs are only performed in Atlas Copco workshops or by Certified Service Partners.
Atlas Copco offers extended warranty and state of the art preventive maintenance through its ToolCover
contracts. For further information contact your local Service representative.
For electrical motors:
■Warranty will only apply when the electric motor has not been opened.
ServAid
ServAid is a portal that contains technical information for all hardware and software products such as:
- Safety Information including declarations, standards and directives
- Technical data

Product information EN QST42-50CT-T50-L334-H13
4© Atlas Copco Industrial Technique AB - 9839 1200 01
- Installation, Operation and Service Instructions
- Spare parts lists
- Accessories
ServAid is continuously updated and is available at:
https://servaid.atlascopco.com
For further information contact your local Atlas Copco representative.
Website
Log in to Atlas Copco: www.atlascopco.com.
You can find information concerning our products, accessories, spare parts and published matters on our
website.
Safety Data Sheets MSDS/SDS
The safety data sheets describes chemical products sold by Atlas Copco.
For more information, consult the website:
www.atlascopco.com/sds
Country of origin
Please refer to the information on the product label.
Dimensional drawings
For information about the dimensions of a product, see the Dimensional drawings archive:
http://webbox.atlascopco.com/webbox/dimdrw
Overview
Technical data for QST Nutrunners
Ordering No 8435408325
Model QST42-50CT-T50-L334-H13
Gear ratio 21.33
Min C-C 43
Socket holder size 1/2 in
Sound power - dB(A)
Sound pressure <70 dB(A)
Sound standard ISO15744
Sound uncertainty - dB(A)
Speed 700 r/min
Torque range 10–50 Nm
Torque range 7–36 ft lb
Travel 50 mm
Weight 3.9 kg,
8.6 lb
A 334mm
B 23mm
C 399mm
D 15mm

QST42-50CT-T50-L334-H13 EN Product information
© Atlas Copco Industrial Technique AB - 9839 1200 01 5
E mm
■CT - Straight Nutrunner
■COT - Offset Nutrunner
■CTV - Angle head Nutrunner
Service overview
Service recommendations
Preventive maintenance is recommended at regular intervals. See the detailed information on preventive
maintenance. If the product is not working properly, take it out of service and inspect it.
If no detailed information about preventive maintenance is included, follow these general guidelines:
■Clean appropriate parts accurately
■Replace any defective or worn parts

Installation EN QST42-50CT-T50-L334-H13
6© Atlas Copco Industrial Technique AB - 9839 1200 01
Installation
Installation requirements
Clamping
No clamping is allowed on the transducer, the gear unit or the motor unit. Clamping on these areas will in-
terfere with the transducer.
Motor connector
The motor connector is rotatable ± 150 degrees along two axes.
Compression spring
The QST nutrunners are delivered with two springs. The strong spring is built in the front part.

QST42-50CT-T50-L334-H13 EN Service
© Atlas Copco Industrial Technique AB - 9839 1200 01 7
Service
Preventing ESD problems
The components inside the tool and controller are sensitive to electrostatic discharge. To avoid future mal-
function, make sure that service and maintenance is carried out in an ESD approved work environment.
The figure below shows an example of an appropriate service work station.
Maintenance instructions
Service recommendations
Preventive maintenance is recommended at regular intervals. See the detailed information on preventive
maintenance. If the product is not working properly, take it out of service and inspect it.
If no detailed information about preventive maintenance is included, follow these general guidelines:
■Clean appropriate parts accurately
■Replace any defective or worn parts

Recycling EN QST42-50CT-T50-L334-H13
8© Atlas Copco Industrial Technique AB - 9839 1200 01
Recycling
Recycling instruction
When a product has served its purpose it has to be recycled properly. Dismantle the product and recycle
the components in accordance with local legislation.
Recycling information for QST (34-150Nm)
Part: Recycle as:
1 Socket holder Metal, Steel
2 3 screws Metal, Steel
3 Front part Metal, Steel
4 Transducer Metal, Steel
5 2 Covers Metal, Aluminum
6 Cable rail Metal, Zink
7 2 Screws Metal, Steel
8 Cable Electronic
9 Gear unit Metal, Steel
10 3 Hex socket screws Metal, Steel
11 Motor Electronic

QST42-50CT-T50-L334-H13 EN Recycling
© Atlas Copco Industrial Technique AB - 9839 1200 01 9
Part: Recycle as:
12 Motor (back part) Metal, Aluminum
13 Communication card tube Metal, Stainless steel
14 Communication card Electronic
15 Connector Electronic

Original instructions
Atlas Copco Industrial
Technique AB
SE-10523 STOCKHOLM
Sweden
Telephone: [phone]
www.atlascopco.com
© Copyright 2021, Atlas Copco Industrial Technique AB. All rights reserved.
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This applies in particular to trademarks, model denominations, part numbers
and drawings. Use only authorized parts. Any damage or malfunction caused
by the use of unauthorized parts is not covered by Warranty or Product
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