Electric Drives Linear Motion and
and Controls Hydraulics Assembly Technologies Pneumatics Service
Draft Sensor KMB RE 95 170/08.06 1/8
Replaces: 12.04
Technical data sheet
Sensor for draft measurement
Model series 3
Table of Contents Features
Ordering Code 2 – Draft sensor according to Category 3 rear three-point
attachment ISO 730-1
Order Number 3
– Sensor element with magnetoelastic measuring principle
Description 4
– Integrated electronics
Operating Principle 4
– Output signal ratiometric and proportional to draft
Block Circuit Diagram / Terminal Connections 4
– Zero point and sensitivity matched
Technical Data 5
Characteristics 5
Sensor Dimensions 6
Mating Connector 6
Cable Variants 7
Installation Instructions 8
Safety Instructions 8
/8 Bosch Rexroth AG KMB Draft Sensor RE 95 170/08.06
Ordering Code
KMB A / 3 0 -
Type
Draft sensor KMB
Load range
± 25 kN 025
± 40 KN 040
± 50 KN 050
± 60 KN 060
± 90 KN 090
± 110 KN 110
± 150 KN 150
+ 160 KN 160
Diameter
Ø 37.5 A
Cable variants
Cable without protecting sleeve 1
Cable with spiral protecting sleeve 2
Cable with metal protecting sleeve 3
Cable with plastic protecting sleeve 4
Plug
AMP plug; 3-pin A
DEUTSCH plug; 3-pin B
Model series
3
Index
0
Cable length
800 mm 08
965 mm 09
1000 mm 10
1500 mm 15
1600 mm 16
1800 mm 18
2700 mm 27
RE 95 170/08.06 KMB Draft Sensor Bosch Rexroth AG /8
Order Number
Sensor Order number
KMB 025 A 1 A / 3 0 – 15 R917000161
KMB 025 A 4 A / 3 0 – 08 R917000177
KMB 025 A 4 A / 3 0 – 10 R917000158
KMB 025 A 4 A / 3 0 – 15 R917000175
KMB 040 A 1 A / 3 0 – 15 R917000153
KMB 040 A 2 A / 3 0 – 27 R917000160
KMB 040 A 3 A / 3 0 – 15 R917000155
KMB 040 A 3 A / 3 0 – 15 R917001320
KMB 040 A 4 A / 3 0 – 08 R917000167
KMB 040 A 4 A / 3 0 – 16 R917000159
KMB 040 A 4 A / 3 0 – 18 R917000180
KMB 050 A 2 A / 3 0 – 08 R917000157
KMB 050 A 2 A / 3 0 – 08 R917000176
KMB 060 A 1 A / 3 0 – 15 R917000154
KMB 060 A 1 A / 3 0 – 15 R917000170
KMB 060 A 2 A / 3 0 – 27 R917000164
KMB 060 A 3 A / 3 0 – 15 R917000156
KMB 060 A 4 A / 3 0 – 08 R917000166
KMB 060 A 4 A / 3 0 – 15 R917000173
KMB 060 A 4 A / 3 0 – 16 R917000165
KMB 060 A 4 A / 3 0 – 18 R917000181
KMB 090 A 1 A / 3 0 – 15 R917000168
KMB 090 A 1 A / 3 0 – 15 R917000171
KMB 090 A 2 A / 3 0 – 27 R917001969
KMB 090 A 3 A / 3 0 – 15 R917000163
KMB 090 A 4 A / 3 0 – 15 R917000172
KMB 090 A 4 A / 3 0 – 18 R917000275
KMB 110 A 1 A / 3 0 – 15 R917000179
KMB 110 A 2 A / 3 0 – 08 R917000162
KMB 150 A 2 A / 3 0 – 15 R917001544
KMB 150 A 2 A / 3 0 – 08 R917000174
KMB 150 A 3 A / 3 0 – 15 R917003314
KMB 160 A 1 B / 3 0 – 09 R917000169
KMB 160 A 1 B / 3 0 – 09 R917003021
/8 Bosch Rexroth AG KMB Draft Sensor RE 95 170/08.06
Description
The draft sensor is designed as a bearing bolt. Shearing stress occurs at the bearing position, which is evaluated as a
magnetoelastic effect. In unloaded condition a symmetrical magnetic field is formed by the primary coil between the poles. If
pulling or pressure drafts are induced, then the magnetic properties of the original isotropic material is altered. As a consequence
the magnetic field is rendered asymmetrical. This in turn induces a magnetic potential difference between the secondary poles.
This causes a magnetic flux through the secondary circuit so that a voltage is induced in the secondary coils. This voltage is
proportional to the acting draft. It is amplified and rectified in an integrated evaluation circuit.
The sensor supplies a ratiometric voltage (25% .. 75% of supply voltage). It is available in various measuring ranges and cable
versions. This sensor is a typical part of an electronic-hydraulic hitch control (EHR).
Operating Principle
1 Primary coil a Symmetrical magnetic field
2 Secondary coil b Asymmetrical magnetic field
3 Primary pole surface
4 Secondary pole surface
5 Steel sleeve
Block Circuit Diagram / Terminal Connections
Supply voltage Usup = 8 … 12 V
Signal voltage Usig = 0.25 … 0.75 Usup
Ground
RE 95 170/08.06 KMB Draft Sensor Bosch Rexroth AG /8
Technical Data
Table of values
Type 025 040 050 060 090 110 150
Load range F ± 25 kN ± 40 kN ± 50 kN ± 60 kN ± 90 kN ± 110 kN ± 150 kN
Overload range, Standard ± 80 kN ± 160 kN ± 220 kN
Electrically measurable overload + 1.2 FPressure up to - 1.5 FPull
Supply voltage Usup 8 … 12 V DC regulated voltage, no direct supply out of vehicle power (battery)
Isup < 100 mA
Signal voltage Usig 0.25 … 0.75 x Usup
Load impedance > 10 kW
Characteristic 1 2
Hysteresis ± 0.01 Usup ± 0.005 Usup
Temp. coefficient of zero point < ± 0.25 % Usup / 10 °C < ± 0.5 % Usup / 10 °C
Temp. coefficient of sensitivity < 1% / 10 °C < 1.25 % / 10 °C
Operating temperature range –35 °C … +85 °C
Storage temperature range –40 °C … +125 °C (permanent); +130 °C (max. 2 h)
Type of protection with fitted mating IP67
connector IP69K
Vibration load 24 g
Mating connector 3-pin plug with single-wire seal
Electromagnetic compatibility (EMC) as per 150 V/m ≤ ± 0.5 % Usup
ISO 11452-5 2002-04 1 MHz … 2 GHz
Characteristics
Characteristic 1 applies for a load range up to 50 kN, characteristic 2 for a load range as from 60 kN.
Characteristic 1 Characteristic 2
6 TJH Hysteresis, typical 6 TJH Hysteresis, typical
±0.01 Usup ±0.005 Usup
6 TVQ
6 TVQ
6 TVQ
6 TVQ
6 TVQ
6 TVQ
Characteristic for Characteristic for
decreasing load decreasing load
6 TVQ
6 TVQ
FTraction FPush FTraction FPush
6 TVQ
6 TVQ
Characteristic for Characteristic for
increasing load increasing load
6 TVQ
6 TVQ
6 TVQ
6 TVQ
6 TVQ
6 TVQ
/8 Bosch Rexroth AG KMB Draft Sensor RE 95 170/08.06
Sensor Dimensions
+0,5
158 +1,5 8,2 -0,5
+0,8 +0,5
39 -0,8 24 -0,5 Protective cap for mating connector
+1 +0,5 +0,4
10 -1 10 -0,5 15 +0,2 74±3
3 0°
Ø37-0,42
-0,17
Ø5
L*±20
AMP
Measuring zone
DEUTSCH
* See ordering code for cable length
Plug connections
AMP DEUTSCH
1 + Supply voltage 1 + Supply voltage
Usup (8 … 12 VDC) Usup (8 … 12 VDC)
25–0.5
2 Signal voltage
2 Signal voltage Usig = 0.25 … 0.75 Usup
Usig = 0.25 … 0.75 Usup
3 Ground
3 Ground
15–0.5
Mating Connector
AMP
Female connector comprising: Order number Type of protection IP67 and IP69K
Housing (1x) 1 928 402 579 1)
Protective cap (1x) 1 280 703 022 1)
Contacts (3x) 929 939 2)
Single wire seal (3x) 828 905-1 2) for FLK cable type
(wire size: 0.5 – 1.0 mm2) (3x) 828 904-1 2) for FLKr, FLX cable
DEUTSCH
Connector comprising: Order number Type of protection IP66A
Connector DEUTSCH DT 04-3P 3)
Wedge Lock DEUTSCH W 3P 3)
Terminals DEUTSCH 0460-202-16141 3)
1) available from Bosch
2) available from AMP
3) available from DEUTSCH
The mating connector is not part of the delivery volume.
RE 95 170/08.06 KMB Draft Sensor Bosch Rexroth AG /8
Cable Variants
Cable without protecting sleeve
³
-³
Protective cap for mating connector
³
³
Cable with spiral protecting sleeve
³
-³
Protective cap for mating connector
³
³
³
Cable with metal protecting sleeve
³
-³
³
Rotating screwed connection Protective cap for mating connector
(WAF13)
Sliding metal protecting sleeve
³
³
A. thread Pg 7 (WAF15)
Cable with plastic protecting sleeve
³
-³
Protective cap for mating connector
³
³
/8 Bosch Rexroth AG KMB Draft Sensor RE 95 170/08.06
Installation Instructions
– See assembly drawing Y 830 304 223, to avoid any measurement uncertainties
– Defined draft application, e.g. ball lining
– Floating mounting in radial direction with closing plate
##
#
Safety Instructions
– The suggested circuits do not imply any technical liability for
the system on the part of Rexroth.
– The safety instructions contained in RDE 90 301-01 must be
observed.
– Leads to the sensors must be shielded. The shielding is to
be connected on one side to the electronic circuit or with a
low-impedance to the device or vehicle ground.
– Lines to the electronics must not be routed in the vicinity of
other power-conducting cables in the device or vehicle.
– A sufficient distance to radio systems must be maintained.
– All connectors must be unplugged from the electronics
during electrical welding operations.
Bosch Rexroth AG © This document, as well as the data, specifications and other informations set
Mobile Hydraulics forth in it, are the exclusive property of Bosch Rexroth AG. Without their consent
Product Unit Mobile Electronics it may not be reproduced or given to third parties.
Robert-Bosch-Straße 2 The data specified above only serve to describe the product. No statements
71701 Schwieberdingen, Germany concerning a certain condition or suitability for a certain application can be
Phone +49 (0) 711-811-4 30 80 derived from our information. The given information does not release the user
from the obligation of own judgement and verification. It must be remembered
Facsimile +49 (0) 711-811-3 36 85
that our products are subject to a natural process of wear and aging.
info.brm-me@boschrexroth.de
Subject to change.
www.boschrexroth.com/mobile-electronics
