REDEX DRP Manual

Planetary servo-reducer
DRP
Mounting, Setup and Maintenance
Instructions
Document: RX182/009
Version: 01/2017

Language Summary:
I. English
II. French / Français
III. German / Deutch
IV. Spanish / Español
V. Italian / Italiano
VI. Chinese / 简体中文
VII. Russian / русский

DRP+ User manual
Ref.: RX182/009
Version 01/2017 - English
This document must not be reproduced nor information therein disclosed without our authorization
Page 1/ 30
Summary: English version
1INTRODUCTION 2
1.1 WARNINGS 2
1.2 GEARBOX IDENTIFICATION 2
1.3 LONG TERM STORAGE 2
2TECHNICAL DATA 3
2.1 GEARBOX 3
2.2 OUTPUT PINION 3
3LUBRICATION 4
3.1 RECOMMENDED LUBRICANTS 4
3.2 OIL FILLING:RIGHT-ANGLE CONFIGURATION (DRP+R &DRP+P) 4
3.3 OIL FILLING:MOTOR IN-LINE CONFIGURATION (DRP+M) 7
3.4 OIL DRAINING 10
4INSTALLATION ON THE MACHINE 14
4.1 RACK MOUNTING TOLERANCE 14
4.2 DRP+ PARALLELISM TOLERANCES 15
4.3 DRP+ HEIGHT SETTING 15
4.4 DRP+ PERPENDICULARITY TOLERANCES 17
4.5 PROPER TOOTH MESHING VALIDATION 18
4.6 TOOTH CONTACT PATTERN CHECK 19
4.7 DRP+ FINAL FIXING 19
5MOTOR INSTALLATION 20
5.1 MF-TYPE MOTOR FLANGE MOUNTING (FOR RIGHT ANGLE CONFIGURATIONS DRP+R AND CYLINDRICAL SHAFTS) 20
5.2 MF-TYPE MOTOR FLANGE MOUNTING (FOR RIGHT ANGLE CONFIGURATIONS DRP+R, DRP+P AND TAPER SHAFTS) 21
5.3 IF-TYPE MOTOR FLANGE MOUNTING (FOR IN-LINE CONFIGURATIONS DRP+M) 22
6MECHANICAL PRELOAD 25
6.1 DESCRIPTION 25
6.1.1 LOCKING TOOL 25
6.1.2 SPACER 25
6.1.3 COUPLING AND SHAFT ADAPTERS 25
6.2 GANTRY MACHINE CONFIGURATION 26
6.3 PRELOAD SETTING –LINEAR DRIVE 27
6.4 PRELOAD SETTING –ROTARY DRIVE 29
6.4.1 INSTALLATION ON THE MACHINE 29
6.4.2 DRP+ PARALLELISM TOLERANCES,HEIGHT SETTING,TOOTH MESHING VALIDATION 29
6.4.3 PRELOAD SETTING 29
7RACK & PINION LUBRICATION: OPTIONAL LUBE PINION (PGRP) AND LUBE PINION SUPPORT (SFRP)
30
7.1 DESCRIPTION OF THE PGRP &SFRP OPTION 30
7.2 RECOMMENDED LUBRICANTS 30
7.3 OIL FLOW RATES 30

DRP+ User manual
Ref.: RX182/009
Version 01/2017 - English
This document must not be reproduced nor information therein disclosed without our authorization
Page 2/ 30
1 INTRODUCTION
The DRP+ planetary gearbox will give you complete satisfaction if all the following mounting, operating &
maintenance instructions are respected.
1.1 Warnings
WARNING! HANDLING OPERATIONS.
Never handle the DRP+ unit with bevel gearbox shafts. Use lifting rings fixed in the
universal housing, as shown on the pictures below. Any improper handling will void the
warranty.
WARNING! LUBRICATION REQUIREMENTS.
The rack and the output gears must be lubricated before running the DRP+. The DRP+ is
delivered WITHOUT OIL and has 2 independent lubrication circuits.
Refer to lubrication chapter in this manual to respect all lubrication requirements.
Any improper lubrication will void the warranty.
1.2 Gearbox identification
Each unit can be identified through its identification plate and the serial number indicated on it. The serial
number must be given for any correspondence on a particular unit.
1.3 Long term storage
Each gearbox is delivered wrapped and greased for 1 month anti-corrosion protection. Gearboxes which
are not installed shortly after receipt should be stored in a dry atmosphere with temperature between 0°C
& 40°C. The unit must be filled completely with oil for storage.
Serial number
Drawing code
Designation
Shipment date
Reduction ratio
Backlash (if
needed)
861606
RX129702-12
DRP4+M.31.3.H
NOV. 2016
31

DRP+ User manual
Ref.: RX182/009
Version 01/2017 - English
This document must not be reproduced nor information therein disclosed without our authorization
Page 3/ 30
2 TECHNICAL DATA
2.1 Gearbox
DRP+1
DRP+2
DRP+3
DRP+4
DRP+5
Maximum
acceleration
output
torque (Nm)
1 st.
i=5, 7, 10
-
-
-
-
-
2 st.
i=17
683
1838
3240
6125
-
i=21
534
1400
2625
6125
7520
i=31
753
2100
3850
3600
10050
i=46
473
1400
2468
4480
8800
i=61
656
2013
2695
4970
8800
i=91
473
1400
2695
4970
8800
Max. input
Speed (rpm)
1 st. i=5, 7, 10
-
-
-
-
-
2 st. i=17 to 91
6000
6000
5000
4000
4000
Approx.
Weight (kg)
DRP+R / DRP+P
1 st.
-
-
-
-
-
2 st.
115
207
300
520
1116
DRP+M
1 st.
-
-
-
-
-
2 st.
109
202
294
506
1091
2.2 Output pinion
DRP+1
DRP+2
DRP+3
DRP+4
DRP+5
Module
3
4
5
6
8
Theoretical pitch
diameter (mm)
Helical: 19°31'42''
57.30
76.39
95.49
114.59
127.32
Straight
57
76
95
114
128
NOTE:
Data are subjected to change without prior notices.

DRP+ User manual
Ref.: RX182/009
Version 01/2017 - English
This document must not be reproduced nor information therein disclosed without our authorization
Page 4/ 30
3 LUBRICATION
3.1 Recommended lubricants
WARNING!
The DRP+ is delivered WITHOUT oil and has 2 independent lubrication circuits. Fill them
with oil before using the DRP+.
Any damage due to incorrect lubrication will void the warranty.
WARNING!
The rack and the output gears must be lubricated before running the DRP+.
We recommend using a synthetic PAO based oil with viscosity 150 Cst at 40°C to lubricate the DRP+
such as one of the followings (or an equivalent); for alternates, please consult us.
Trade mark
Oil reference
KLUBER
KLUBERSYNTH EG4-150
MOBIL
MOBILGEAR SHC XMP 150 or
MOBIL SHC629 (warning: life time 7500 hours)
TOTAL
CARTER SH150
SHELL
OMALA HD150
LUBCON
TURMOSYNTHOIL 150
3.2 Oil filling: right-angle configuration (DRP+R & DRP+P)
DRP+ are delivered with sight glasses and breathers in a separate plastic bag. They must be installed in
the correct position described in the following procedure and sketches.
1. Place the sight glass in the correct position.
2. Remove the two input plugs of the DRP+R & DRP+P (on the upper face of the bevel box).
3. Fill the DRP+R & DRP+P slowly until the oil level reaches the middle of the sight glasses. Note that
the level on the sight glass may take some time to stabilize.
4. Re-install the oil input plugs.
5. Install the 2 breathers (one per circuit) on the upper face of the bevel boxes in the place of the red
original plugs. (Except external forced lubrication).
6. Run the unit until it reaches operating temperature. Stop the unit, check and adjust the level.
Note:
For DRP1+R & DRP1+P the breathers are not necessary.
WARNING!
An O-ring seal insures the leak tightness of the oil plugs. Tighten carefully the plugs in
order to avoid damaging the seal.

DRP+ User manual
Ref.: RX182/009
Version 01/2017 - English
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Page 5/ 30
Configuration:
Horizontal mounting / Output pinions horizontal
Accessories:
- 2 sight glasses
- 2 breathers
- Oil plugs
2 oil input plugs
2 x 2 oil output plugs
Up
Down
Sightglass
Breather
Size
Approximated oil quantity per circuit (L)
DRP1+R/P
0,4
DRP2+R/P
0.9
DRP3+R/P
1,6
DRP4+R/P
3
DRP5+R/P
5,3
Configuration:
Vertical mounting / Stacked output pinions
Accessories:
- 2 sight glasses
- 2 breathers with elbow
- Oil plugs
2 oil input plugs
2 x 2 oil output plugs
Up
Down
Breather
(1 per circuit)
Sightglass
(1 per circuit)
Size
Approximated oil quantity per circuit (L)
DRP1+R/P
0,4
DRP2+R/P
0,9
DRP3+R/P
1,6
DRP4+R/P
3
DRP5+R/P
5,3
WARNING! The DRP+ may require a special lubrication arrangement for mounting
positions with vertical input shafts (B5/V1 & B5/V3) when operating at a continuous low
input speed (<50 RPM) to insure that the upper bearings are properly lubricated.
CONSULT US IF ANY DOUBT!

DRP+ User manual
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Page 6/ 30
Configuration:
Horizontal mounting / output pinions up
Accessories:
External forced lubrication
- 2 sight glasses
- Oil plugs
Up
Down
Oil draining plugs
Sightglass
(1per circuit)
Size
Advised oil flow
for each circuit (L/min)
DRP1+R/P
0,5
DRP2+R/P
1
DRP3+R/P
2
DRP4+R/P
2,5
DRP5+R/P
3
WARNING!
External forced lubrication: special procedure.
For each lubrication circuit:
1. Connect the external lubrication pipes and fill them with oil. The oil suction is located in the bottom
hole of the bevel box and the oil injection in the upper hole of the DPR+ housing.
2. Adjust the oil level to the middle of the sight glass while the pump is not running.
3. Run the pump and re-adjust the oil level to the middle of the sight glasses while the pump is running.
Notes:
The breathers are not necessary.
Oil must be filtered (< 50µm).
Internal pressure must not exceed 1 bar.

DRP+ User manual
Ref.: RX182/009
Version 01/2017 - English
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Page 7/ 30
Configuration:
Horizontal mounting / output pinions down
Accessories:
- 2 sight glasses
- 2 breathers
- Oil plugs
2 oil input plugs
2 x 2 oil output plugs
(2 on each face)
Up
Down
Breather
Sightglass
(1 per circuit)
Size
Approximated oil quantity per circuit (L)
DRP1+R/P
0,65
DRP2+R/P
1,5
DRP3+R/P
2,6
DRP4+R/P
5
DRP5+R/P
9
3.3 Oil filling: motor in-line configuration (DRP+M)
1. Remove the 2 oil input plugs and the 2 oil level plugs.
2. Fill the DRP+ with oil until the oil comes out of the level hole.
3. Replace the oil input plugs and oil level plugs into position.

DRP+ User manual
Ref.: RX182/009
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Page 8/ 30
Configuration:
Horizontal mounting / Output pinions horizontal
Accessories:
- Oil plugs
Oil input plug
Oil level plug
2 x 2 Oil output plugs
Up
Down
Size
Approximated oil quantity per circuit (L)
DRP1+M 1st.
Consult us
DRP1+M 2st.
0,35
DRP2+M 1st.
Consult us
DRP2+M 2st.
0,72
DRP3+M
1,3
DRP4+M
2,6
DRP5+M
4,6
Configuration:
Horizontal mounting / Output pinions down
Accessories:
- Oil plugs
2 x 4 Oil input plug and level
2 Oil output plugs
Up
Down
Size
Approximated oil quantity per circuit (L)
DRP1+M 1st.
Consult us
DRP1+M 2st.
0,6
DRP2+M 1st.
Consult us
DRP2+M 2st.
1,2
DRP3+M
2,3
DRP4+M
4,6
DRP5+M
8,1

DRP+ User manual
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Page 9/ 30
Configuration:
Vertical mounting / Stacked output pinions
Accessories:
- Oil plugs
Up
Down
Oil input plug
Oil level plug
2 Oil output plugs
Size
Approximated oil quantity per circuit (L)
DRP1+M 1st.
Consult us
DRP1+M 2st.
0,35
DRP2+M 1st.
Consult us
DRP2+M 2st.
0,72
DRP3+M
1,3
DRP4+M
2,6
DRP5+M
4,6
Configuration:
Vertical mounting / Output pinions up
Accessories:
- Oil plugs
Size
Approximated oil quantity per circuit (L)
DRP1+M 1st.
Consult us
DRP1+M 2st.
DRP2+M 1st.
DRP2+M 2st.
DRP3+M
DRP4+M
DRP5+M
WARNING!
This mounting position may require a special procedure for oil filling. Please consult us.

DRP+ User manual
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Page 10 / 30
3.4 Oil draining
We advise to change oil after 10000 hours of running.
In order to remove all residual particles in oil, do not hesitate to:
- Run the unit before draining in order to reduce the viscosity of the old lubricant
- “Wash” the unit with fresh oil before refilling.
1. Unscrew the 2 oil input plugs of the DRP+ to allow air entering the gearbox.
2. Unscrew the 4 oil output plugs (2 per circuit) and wait until no more oil flows out from the unit.
NOTE:
Drained oil is a special industrial waste and should be handled according to current laws.
The following drawings show the exact location of the lubrication holes.

DRP+ User manual
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DRP+ User manual
Ref.: RX182/009
Version 01/2017 - English
This document must not be reproduced nor information therein disclosed without our authorization
Page 12 / 30

DRP+ User manual
Ref.: RX182/009
Version 01/2017 - English
This document must not be reproduced nor information therein disclosed without our authorization
Page 13 / 30

DRP+ User manual
Ref.: RX182/009
Version 01/2017 - English
This document must not be reproduced nor information therein disclosed without our authorization
Page 14 / 30
4 INSTALLATION ON THE MACHINE
WARNING! HANDLING OPERATIONS.
Never handle the DRP+ unit with bevel gearbox shafts. Use lifting rings fixed in the universal
housing or in the pinions.
4.1 Rack mounting tolerance
Parallelism between the rack reference surface and the linear guide
The DRP+ requires that the rack has been installed on the machine following the rack manufacturer
mounting procedure and respects the tolerances shown below:
We advice to measure the parallelism error values on 3 points for each segment of rack, as shown on the
drawing below. This rack topography will be used for proper tooth meshing validation and preload
setting (see next chapters).
In order to control the pitch error, we also recommend doing 3 measurements at each connection of 2
rack segments, as shown on the sketch below.
The variation between the 3 comparators at each connection must not exceed:
- 0.015 mm for a rack module 3,
- 0.020mm for a rack module > 3.
SIZE
Maximum parallelism errors between rack &
linear guide
Pin
diameter to
use
For 1 rack
section
For
complete
axis length
DRP1+
6 mm
0.02 mm / m
0.05 mm
DRP2+
8 mm
0.02 mm / m
0.05 mm
DRP3+
10 mm
0.02 mm / m
0.05 mm
DRP4+
12 mm
0.04 mm / m
0.07 mm
DRP5+
16 mm
0.06 mm / m
0.08 mm

DRP+ User manual
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Page 15 / 30
Z
X
Y
D
4.2 DRP+ parallelism tolerances
Parallelism tolerances between the mounting surface of the DRP+ and the rack reference surface (See
diagrams below).
The measurement location of LX(1) and LX(2) must be separated by at least the length of the unit.
The measurement location of LY(1) and LY(2) must be separated by at least the depth of the unit.
4.3 DRP+ height setting
Setting the centre distance of the rack & pinions by means of an intermediate plate
1. In case of a mechanical preload, release the coupling
screws (D) between the 2 bevel gearboxes at the
opposite side of the motor. This will free the right pinion
from the left one.
2. Place a single rack section on the pinions to set the relative
angular position between the two pinions. With the rack fully
meshing with one of the pinions, rotate the other pinion by
turning the corresponding input shaft and measure with an
indicator the lowest position the rack can reach into the second
pinion.
3. Measure the distance without backlash (a) between the back surface of the rack and the centre of the
top surface of the DRP+ housing.
Size
Maximum parallelism
errors between DRP+ fixing
face on machine & rack
LX(1) - LX(2)
LY(1) - LY(2)
DRP1+
0.03 mm
0.025 mm
DRP2+
0.03 mm
0.025 mm
DRP3+
0.05 mm
0.025 mm
DRP4+
0.10 mm
0.025 mm
DRP5+
0.15 mm
0.040 mm

DRP+ User manual
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Page 16 / 30
4. Measure the distance (b) from the back mounting
surface of the rack (fixed on the machine bed) to the
DRP+ fixing surface. If possible, do it for each rack
section and use the largest measured value.
5. The intermediate plate must be realized with a thickness (c) respecting the parallelism tolerance
shown in the table below.
SIZE
Tooth radial
clearance tb1
P
(mm)
DRP1+
0.1
+0.025
-0.025
mm
0.02
DRP2+
0.15
+0.025
-0.025
mm
0.02
DRP3+
0.2
+0.05
-0.05
mm
0.02
DRP4+
0.2
+0.075
-0.075
mm
0.02
DRP5+
0.3
+0.1
-0.1
mm
0.03
The tooth radial clearance tb1 (as well as the backlash between rack and pinion tb2, mentioned in the next
chapter) is detailed in the sketch below:

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4.4 DRP+ perpendicularity tolerances
Adjusting the perpendicularly of the pinion axis to the rack by controlling the parallelism between the front
face of the DRP+ and the rack.
SIZE
Maximum parallelism errors
between DRP+ front face and rack
LZ(1) - LZ(2) 
DRP1+
0.040 mm
DRP2+
0.040 mm
DRP3+
0.045 mm
DRP4+
0.045 mm
DRP5+
0.055 mm

DRP+ User manual
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Page 18 / 30
4.5 Proper tooth meshing validation
Checking that both pinions are properly meshing with the rack by measuring the clearance between rack
and pinion teeth (tb2)
1. Place two indicators as follow:
- One between the DRP+ housing or carriage and a fixed
reference (1).
- One between the DRP+ pinion (at pitch diameter) and a
fixed reference (2).
2. Move the carriage in one direction by turning the gearbox
input shaft.
3. Set the two indicators position at “0”.
4. Turn the input shaft to move the carriage in the other
direction until both indicators have moved.
The difference between the measurements of the two indicators gives the backlash between rack &
pinion teeth (tb2). Compare the value with the values given in the table below.
Size
tb2 acceptable backlash
between rack and pinion
DRP1+
0.070
+0.015
mm
-0.015
mm
DRP2+
0.100
+0.015
mm
-0.015
mm
DRP3+
0.135
+0.035
mm
-0.035
mm
DRP4+
0.135
+0.05
mm
-0.05
mm
DRP5+
0.205
+0.070
mm
-0.070
mm
Explanation of tb2:
This operation should be done for both pinions independently. It is also strongly recommended to repeat
this operation at the highest and lowest points of the rack topography (see chapter 4.1).