Instruction
Manual
9295B_002-635e-12.16
RoaDyn® P530
Measuring Hub for
Tire Test Stands
Type 9295B
Instruction
Manual
9295B_002-635e-12.16
RoaDyn® P530
Measuring Hub for
Tire Test Stands
Type 9295B
Page 19295B_002-635e-12.16
Information in this document is subject to change without
notice. Kistler reserves the right to change or improve its
products and make changes in the content without obliga-
tion to notify any person or organization of such changes
or improvements.
©2014...2016 Kistler Group. All rights reserved. Except as
expressly provided herein, no part of this manual may be
reproduced for any purpose without the express prior writ-
ten consent of Kistler Group.
Kistler Group
Eulachstrasse 22
8408 Winterthur
Switzerland
Tel. +41 52 224 11 11
Fax +41 52 224 14 14
info@kistler.com
Kistler Instrumente GmbH
Division Automotive Research & Test
Umberto-Nobile-Str. 14
71063 Sindelngen
Germany
Tel. +49 7031 3090 0
Fax +49 7031 3090 980
info.de@kistler.com
www.kistler.com
Foreword
Foreword
P530 Measuring Hub for Tire Test Stands, Type 9295B
9295B_002-635e-12.16Page 2
Content
1. Introduction .................................................................................................................................4
2. Important Notes...........................................................................................................................5
2.1 For Your Safety ...................................................................................................................5
2.2 Warnings .............................................................................................................................6
2.3 How to Use the Instrument .................................................................................................6
2.4 What Happens After Modications? ...................................................................................7
2.5 Disposal Instructions for Electrical and Electronic Equipment ............................................7
2.6 Software Upgrades and Updates .......................................................................................7
3. Product Description ....................................................................................................................8
3.1 Overview .............................................................................................................................8
3.2 Features .............................................................................................................................9
3.4 Application ........................................................................................................................10
3.5 Measuring Chain ..............................................................................................................11
3.6 Technical Data ..................................................................................................................12
4. Mounting Instructions ..............................................................................................................13
4.1 Preparation and Tools .......................................................................................................13
4.1.1 General Notes .....................................................................................................13
4.1.2 Special Notes ......................................................................................................14
4.2 Test Stand Connection .....................................................................................................16
4.3 Mounting the Test Object ..................................................................................................17
4.4 Wheel Centering ...............................................................................................................18
4.5 Mounting a Brake .............................................................................................................19
4.6 Other Mechanical Interfaces .............................................................................................20
5. Oil Lubrication ...........................................................................................................................21
5.1 Oil Connection ..................................................................................................................21
5.2 Oil Circulating Lubrications ...............................................................................................21
5.3 Oil Lubrication System ......................................................................................................23
6. Operation ...................................................................................................................................24
6.1 Denition of Forces, Moments and Offset ........................................................................24
6.2 Friction Torque My ............................................................................................................................................................ 25
6.3 Warm-up Phase and Tk0 ..................................................................................................26
6.4 Service Life of Bearings ....................................................................................................27
6.5 Permissible Force Range .................................................................................................28
Page 39295B_002-635e-12.16
Total pages 38
7. Calibration .................................................................................................................................29
7.1 Calibration Congurations ................................................................................................29
7.2 Special Calibration ............................................................................................................30
7.3 Checking Calibration, Function Test and Recalibration ....................................................30
7.4 Maintenance Work ............................................................................................................30
7.5 Crosstalk in Function of Force Application Point and Length of the Lever Arm ................31
7.5.1 Setup 1 ................................................................................................................31
7.5.2 Setup 2 ................................................................................................................32
8. Troubleshooting ........................................................................................................................33
8.1 Fault Location and Rectication .......................................................................................33
8.2 Technical Support .............................................................................................................34
9. Accessories and Spare Parts ..................................................................................................35
9.1 Included Accessories ........................................................................................................35
9.2 Optional Accessories ........................................................................................................35
9.3 Wearing Parts for Oil Lubricated Version..........................................................................35
9.4 Wearing Parts for Grease Lubricated Version ..................................................................36
9.5 Additional Kistler Products for this Application .................................................................36
10. Appendix ....................................................................................................................................37
Content
P530 Measuring Hub for Tire Test Stands, Type 9295B
9295B_002-635e-12.16Page 4
1. Introduction
Thank you for choosing a Kistler quality product
characterized by technical innovation, precision, and long
life. Please take the time to thoroughly read this instruction
manual. It will help you with the installation, maintenance,
and use of this product.
To the extent permitted by law, Kistler does not accept
any liability if this instruction manual is not complied
with, nor for products used other than those listed under
Accessories.
Kistler offers a wide range of products for use in measuring
technology:
Piezoelectric sensors for measuring force, torque,
strain, pressure, acceleration, shock, vibration, and
acoustic-emission
Strain gage sensor systems for measuring force and
torque
Piezoresistive pressure sensors and transmitters
Signal conditioners, indicators, and calibrators
Electronic control and monitoring systems as well as
software for specic measurement applications
Data transmission modules (telemetry)
Kistler also develops and produces measuring
solutions for the application elds of engines, vehicles,
manufacturing, plastics, and the biomechanics sectors.
Our product and application brochures will provide you
with an overview of our product range. Detailed data
sheets are available for almost all of our products.
If you need additional help beyond what can be found
either online or in this manual, please contact Kistler's
extensive support organization.
Important Notes
Page 59295B_002-635e-12.16
2. Important Notes
Please read these notes carefully before operating the
equipment. Kistler is not responsible for damage that may
occur when this system is used in any way other than that
for which it is intended.
2.1 For Your Safety
This product has been manufactured in compliance with
current valid safety regulations. It has left the factory in a
perfect, safe condition. In order to maintain this condition
and ensure safe operation, compliance is required with
the instructions and warning notes contained within this
manual or imprinted on the product itself.
The equipment should be installed and operated only by
qualied persons who are familiar with devices of this
type.
If there is evidence that safe operation is no longer possi-
ble, the instrument must be disconnected from the power
supply and rendered safe against accidental start-up.
Safe operation is no longer possible when the product:
shows visible signs of damage
is no longer operating
has been subjected to prolonged storage under unsuit-
able conditions
has been subjected to rough transit conditions
It is absolutely important to install the measuring hub
correctly at the test stand. For details please refer to
section 4.2 ff.
Secure all parts mounted to the shaft in accordance with
the expected forces!
P530 Measuring Hub for Tire Test Stands, Type 9295B
9295B_002-635e-12.16Page 6
2.2 Warnings
Kistler measuring hubs have been developed and manu-
factured to the state of the art and according to the best
technical knowledge. However, the high-performance
components are not designed for unlimited service life
as they are heavily utilized up to the permanent load and
therefore subject to wear.
The following safety measures must be strictly observed:
Strict compliance is required with the operating
instructions during mounting, in particular concerning
tightening torques for screws, the correct tting of parts,
adequate clearance for the xation arms and safe cable
installation
Loading for measuring hub Type 9289A… and its
accessories must not exceed the overload ranges and
operating temperature range specied in the data sheet
If there is a reason to assume that these overload
ranges have been exceeded, the parts must be tested
(e.g. visual inspection, crack analysis, etc.)
All parts must be subjected to an inspection on each
occasion before use.
A crack test must be carried out after the rst 100 hours
operating time
After 500 hours operating time, the instrument wheel
and the accessories must be subjected periodically to
a crack test
For wheel force measurements, it is important to install
the measuring hub to the test stand correctly!
2.3 How to Use the Instrument
The torque measuring wheel may only be used under
specied environmental and operating conditions.
Protect the signal output of the instrument against con-
tamination and do not touch it with your ngers. Fit the
cover supplied when the connection is not used.
Protect the torque measuring wheel while it is not in
use by keeping it in the transport and storage box sup-
plied.
Important Notes
Page 79295B_002-635e-12.16
2.4 What Happens After Modications?
As a rule, modications to instruments result in altera-
tions of the operating instructions. In such cases, inquire
at your Kistler distributor about the possibilities of updat-
ing your documentation. The current instruction manuals
are available for download from the Kistler website (www.
kistler.com, registration required) or at your local Kistler
representative.
2.5 Disposal Instructions for Electrical and Electronic Equipment
Do not dispose of old electronic instruments in municipal
trash. For disposal when the product has come to the end
of its service life, please return it to an authorized local
electronic waste disposal service or contact the nearest
Kistler Instrument sales ofce for return instructions.
2.6 Software Upgrades and Updates
Kistler may occasionally supply upgrades or updates for
embedded software. Such upgrades or updates must
always be installed.
Kistler declines any liability whatsoever for any direct
or consequential damage caused by products running
on embedded software that has not been upgraded or
updated with the latest available software.
For further information, please contact Kistler Instrumente
GmbH, by phone +49 7031 418 17 0 or
E-Mail info.de@kistler.com
P530 Measuring Hub for Tire Test Stands, Type 9295B
9295B_002-635e-12.16Page 8
3. Product Description
3.1 Overview
The RoaDyn P530 measuring hub is the ideal instrument
for measuring the wheel force and torque on tire test
stands in the laboratory as well as on mobile test vehicles.
The system measures the orthogonal forces
Fx (tangential force)
Fy (lateral force)
Fz (vertical force)
and torques
Mx (restoring torque)
My (driving and braking torque)
Mz (overturning torque)
The RoaDyn P530 measuring hub is a robust, high-
precision instrument equipped with quartz sensors. Four
3-component force sensors are mounted with a high
preload between two plates. Inside, a rotating shaft with
bearings holds the mounted wheel in place.
The path-independent measurement of the force compo-
nents naturally results in a minimum crosstalk between
the components and a resonant frequency of the complete
measuring system. The end of the shaft is led through the
rear side of the dynamometer and is prepared for con-
necting to a brake or driving device. It provides oil circula-
tion for lubrication and cooling of the bearings, resulting
in consistent heat conditions even when high loads are
applied.
The P530 measuring hub is also available with grease
lubrication.
The mechanical interfaces for mounting on the tire test
stand allow front or rear side mounting.
The dynamometer is protected against corrosion, splash
water and dust. The measured signals are transmitted to
the charge amplier (with summing amplier) via a robust
high-insulation cable.
Product Description
Page 99295B_002-635e-12.16
3.2 Features
Maximum measuring accuracy during high dynamic
testing
Fits to wheels with rim size 13 inches or larger; smaller
rims may be mounted with a compatible adapter
Fits to standard rims with interchangeable adapters;
custom rims not required
Bearings with oil lubrication and cooling for rotational
speeds up to 3 000 min-1 at full load
Alternative grease lubrication for rotational speeds up
to 2 000 min-1 for short running periods available upon
request
3.3 Nomenclature
RoaDyn P530 Measuring Hub Type 9295B
Oil lubrication 1
Grease lubrication 2
P530 Measuring Hub for Tire Test Stands, Type 9295B
9295B_002-635e-12.16Page 10
3.4 Application
Measurement of force and torque resulting from tire
non-uniformities, even at high speeds (non-uniformity
tests)
Quasi-static, dynamic and highly dynamic measure-
ments of tire characteristics
Tire vibration measurement
Universal measuring tool for laboratory tire test stands
in the elds of research, development and quality
control
Fig. 1: RoaDyn® P530 measuring hub
front and rear view
Product Description
Page 119295B_002-635e-12.16
3.5 Measuring Chain
Measuring Hub
RoaDyn P530
Type 9295B...
Connection Cable (straight plug)
Type 1677A5 ( l = 5 m)
Type 1677Asp ( l = 1 ... 20 m)
Extension Cable
Type 1678A5 ( l = 5 m)
Type 1678A10 ( l = 10 m)
Type 1677Asp ( l = 1 … 20 m)
Charge Amplifier
Type 5070A...1
Customer Data
Acquisition
not included
or
Connection Cable (90° plug)
Type 1679A5 ( l = 5 m)
Type 1679Asp ( l = 1 ... 20 m)
If you have any questions or problems concerning the
setup, please contact your local Kistler representative.
P530 Measuring Hub for Tire Test Stands, Type 9295B
9295B_002-635e-12.16Page 12
3.6 Technical Data
Measuring range Fx, FykN –20 ... 20
FzkN 0 ... 30
MxkN·m –7,86 ... 7,86
MykN·m –3,00 ... 3,00
MzkN·m –1,24 ... 1,24
Calibrated range Fx high
Fx low
Fy high
Fy low
Fz high
Fz low
kN
kN
kN
kN
kN
kN
0 ... –20
0 ... –2
0 ... 20
0 ... 2
0 ... 30
0 ... 3
Linearity Fx, Fy, Fz%FSO ≤±0,5
Crosstalk 1) Fx –> Fy, Fz% ≤±2 (≤±1,0)
Fy –> Fx, Fz% ≤±2 (≤±1,0)
Fz –> Fx, Fy% ≤±2 (≤±1,0)
Natural frequency f0 (x, z) Hz ≈2 400
Rotational speed
grease lubrication min-1 ≤2 000
oil lubrication min-1 ≤3 000
Operating temp. range °C –20 ... 80
Degree of protection (cable
mounted)
IP65
1) typical values in brackets
Table 1: Important specications
For complete specications please refer to data sheet
000-991, available on www.kistler.com.
Mounting Instructions
Page 139295B_002-635e-12.16
4. Mounting Instructions
Measuring hubs of Type 9295B are precision instruments
and must be handled carefully. Please take note of the
following:
Do not drop the measuring hub or expose it to any
hard knocks! The maximum force of such shocks could
exceed the measuring range of the instrument and
cause severe damage
Do not use a hammer for positioning the rim adapter,
since hammer blows can cause deformation of the
bearings or rim
In the following chapters, you will nd information on
installing the measuring hub and basic details for setting
up the test rig.
4.1 Preparation and Tools
4.1.1 General Notes
Clean the contact surfaces thoroughly prior to assembly
Take care to ensure that the measuring hub is lying
absolutely at against the surface. Even the smallest
air gap causes unwanted elasticity and leads to a
reduction in the natural frequency of the measurement
alignment
Lay all of the connected cables and lines in such a way
that nothing can tear off or out during operation of the
measuring hub
P530 Measuring Hub for Tire Test Stands, Type 9295B
9295B_002-635e-12.16Page 14
4.1.2 Special Notes
Please comply with the following notes for correct
mounting of the measuring hub:
The measuring hub must be installed only by qualied
persons who are familiar with devices of this type
The connecting cable is connected rst of all to the
measuring hub. The two plug sides (measuring hub
and cable) are to be cleaned with Type 1003 cleaning
and insulation spray. The enclosed O-ring is used for
sealing. The contact surfaces for the O-ring must be
clean. The O-ring is inserted and the ange of the
cable is screwed to the measuring hub with the two
screws and tightened up to the surface
Check the atness of the installation surface on a roller
test bench or a testing apparatus before assembly
of the measurement hub. Uneven contact surfaces
cause interior tensions that subject the individual
power sensors to additional heavy lift loads and could
increase crosstalk
Observe the following instructions for the wiring of the
measurement system:
The connection cable from the measurement hub to the
charge amplier must have a high degree of insulation
and exhibit little static electricity. For that reason, use
only the specied connecting cable
Normal cables can be used for the connection between
the charge ampliers and the display or evaluation
devices
Observe careful and clean procedures while performing
any work involving electrical connections. Do not
remove the cover caps on the connections until just
before a cable is connected.
Mounting Instructions
Page 159295B_002-635e-12.16
4.1.3 Measuring Hub Mounting Location
The coordinate system of the measuring hub is designed
so that, with horizontal drum axle and with the test instru-
ment at the top, it conforms to the ISO system of coordi-
nates applicable to the wheel force (Fig. 2).
The measuring hub is provided with oil lubrication or
grease lubrication and must therefore only be used in the
position with its Fz axis upwards.
For a lateral arrangement (Fig. 2, location 2 or 3) at the
customers option the forces measured must be assigned
to the customers coordinate system.
In these cases, the load ranges of X and Z direction can
be exchanged (see Table 2).
Fig. 2: Horizontal drum axle with different positions of
the measuring hub
Location
1 2 3
Fx (kN) –20 ... 20 0 ... 30 0 ... –30
Fy (kN) –20 ... 20 –20 ... 20 –20 ... 20
Fz (kN) 0 ... 30 –20 ... 20 –20 ... 20
Table 2: Load ranges
P530 Measuring Hub for Tire Test Stands, Type 9295B
9295B_002-635e-12.16Page 16
4.2 Test Stand Connection
Measuring hubs of Type 9295B1 and Type 9295B2 can
be connected at the front side using 3xM16 or 4xM12
screws, or at the rear side using 8xM16 screws (scope
of delivery). Fig. 3 shows the corresponding geometry.
When using the 90° angle plug, an additional slot must be
cut (width 25 mm, depth 25 mm, length >80 mm).
Fig. 3: Test stand connection - dimensions
Deep
Mounting plate
(customer)
pcd 226,27/3xM16x32
(xation from front
side)
pcd 260/8x ø17,5
(xation from rear
side)
pcd 226,27/4xM12x28
(xation from front
side)
* only when used with 90° connector
Mounting Instructions
Page 179295B_002-635e-12.16
4.3 Mounting the Test Object
The test object is mounted on the front side of the shaft,
either directly or by using an appropriate adapter. The
designated hole patterns are at 100/135 and 160 mm on
the pitch circle diameters.
Fig. 4: Test object installation - dimensions
rotating parts are highlighted in blue
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