Oriental motor DRL Series User manual

Thank you for purchasing an Oriental Motor product.
This operating manual describes product handling
procedures and safety precautions.
●
Please read it thoroughly to ensure safe operation.
●
Always keep the manual where it is readily available.
Compact linear actuator
DRL Series
Actuator
HP-1426-5
OPERATING MANUAL
Table of Contents
Before using this product ………… Page 3
Introduction
……………………… Page 3
Names and functions of parts
…… Page 4
Safety precautions
……………… Page 6
Precautions for use
……………… Page 7
Installation
………………………… Page 9
Location for installation
………… Page 9
Installing the actuator
…………… Page 9
Installing the actuator using
a mounting plate
PADRL-□□
(sold separately) ………………… Page 11
Installing a load
………………… Page 13
Connection
………………………… Page16
Connecting the driver
…………… Page 16
Connecting the
electromagnetic brake
…………… Page 16
Operation
…………………………… Page17
How to use the adjustment knob
(Applicable only to
adjustment knob type)
………… Page 17
Operating speed at low
temperature
……………………… Page 17
Screw shaft projection
…………… Page 17
Maintenance/Inspection ………… Page18
Options ……………………………… Page19

2
Notes to the user
● This product must be handled by qualified personnel with expert knowledge of electrical and mechanical
engineering. Before using the product, read “Safety precautions” carefully to ensure correct use.
● The product is designed and manufactured for use as an internal component for general industrial
equipment. Do not use the product for any other purpose. Oriental Motor shall not be liable whatsoever
for any damage arising from a failure to observe this warning.
● Should you require the inspection or repair of internal parts, contact the Oriental Motor office where you
purchased the product.
● Characteristics, specifications and dimensions are subject to change without notice.
● While we make every effort to offer accurate information in the manual, we welcome your input. Should
you find unclear descriptions, errors or omissions, please contact the nearest office.
● This document is protected under applicable copyright laws. No part of this document may be reproduced,
stored, changed, duplicated or transmitted digitally (via printing, copying, microfilming or any other method)
without prior written consent from Oriental Motor Co., Ltd.
● is a trademark of Oriental Motor Co., Ltd.
Other product names and company names mentioned in this manual may be trademarks or registered
trademarks of their respective companies and are hereby acknowledged. The third-party products
mentioned in this manual are recommended products, and references to their names shall not be
construed as any form of performance guarantee. Oriental Motor is not liable whatsoever for the
performance of these third-party products.
© Copyright ORIENTAL MOTOR CO., LTD. 2006
Composition and contents of this operating manual
This manual describes the actuators used with the DRL series.
To operate a DRL series actuator, the actuator and driver must be set up first. Read the following
operating manuals regarding the DRL series and follow the instructions.
●
DRL series actuator OPERATING MANUAL (this manual)
Explains the installation of the actuator and a load.
●
DRL series driver OPERATING MANUAL
Explains the installation, connection, I/O, setting and troubleshooting of the driver.

3
Before using this product
This section covers items you should know before using this DRL series actuator.
Introduction
This section covers the main features and system configuration.
■Main features
The compact linear actuator DRL series is a family of linear motion actuators adopting a new mechanism:
a 5-phase stepping motor incorporating a ball screw.
■System configuration
Operating the DRL series requires a controller equipped with a pulse output function.
Actuator
Driver
Controller
I/O signal
DC power supply input
DRL series
Motor leads
+
LS sensor
-
LS sensor
As for the voltage supply to the driver, use a DC power source with reinforced insulation
on both the primary and secondary sides.
■Hazardous substances
The products do not contain the substances exceeding the restriction values of RoHS Directive (2011/16/
EU).

4
Names and functions of parts
This section covers the names and functions of the actuator’s respective parts.
See the reference page indicated for details on each part.
■Standard type
Illustration shows the DRL60P standard type.
Motor
Motor used for driving.
(5-phase stepping motor)
Motor leads
Five leads.
(blue, red, orange, green, black)
Screw shaft
P.13
This is the moving part of the
actuator.
Tapped holes (four locations)
P.9
Set collar P.13
This prevents the screw shaft from
retracting completely into the case.
Adjustment knob
[Applicable only to adjustment knob type] P.17
Use this knob to adjust the position
manually when the power is off.
Load-mounting taps P.13
The DRL20 and DRL28 use
an external screw.
Models adopting connector coupling
( DRL20, DRL28M, DRL42M and DRL60M
)
come equipped with a motor cable.
∗The standard type is also available with an electromagnetic brake.
(DRL42 and DRL60 only)

5
■Guide type
Illustration shows the DRL60P Guide type.
Electromagnetic brake
[
Applicable only to the DRL42 and DRL60
with electromagnetic brake type ]
Non-excitation operation
electromagnetic brake (24 VDC input).
Electromagnetic brake leads P.16
[ Applicable only to the DRL42 and DRL60
with electromagnetic brake type ]
Two leads. (red/white, black/white)
Motor
Motor used for driving.
(5-phase stepping motor)
Motor leads
Five leads.
(blue, red, orange, green, black)
Linear guide
This serves as the anti-spin
mechanism for the ball screw.
Joint
P.14
A moving part of the actuator.
Load-mounting taps
(four locations) P.15
Set collar P.14
This prevents the screw shaft from
retracting completely into the case.
Screw shaft P.14
This is a moving part of the actuator.
Load-mounting taps
(two locations) P.14
Tapped holes (four locations) P.9
Models adopting connector coupling
( DRL20, DRL28M, DRL42M and DRL60M
)
come equipped with a motor cable.
Varistor
[Applicable only to the electromagnetic brake type] P.16
Be sure to connect the varistor when wiring the electromagnetic brake.
∗The guide type is also available with an adjustment knob.

6
Safety precautions
This product is designed for incorporation into industrial equipment. Touching the product during operation
may result in bodily injury or property damage, since the screw shaft is rotating and the surface of the
actuator remains very hot.
To prevent bodily injury or damage to the product, be sure the product is handled and operated only by
qualified personnel familiar with operations involving electronic equipment.
The precautions provided in this section are intended to ensure safe and correct use of the product, thereby
preventing damage or injury to the user or other personnel. Fully understand the meaning of each item
before using the product.
Warning
Handling the product without observing
the instructions that accompany a
“Warning” symbol may result in serious
injury or death.
Caution
Handling the product without observing
the instructions that accompany a
“Caution” symbol may result in injury or
property damage.
NOTE
The items under this heading contain
important handling instructions that the
user should observe to ensure safe use
of the product.
Warning
■
General
●
Do not use the product in an atmosphere
containing explosive, flammable or corrosive gases,
in a place exposed to water, or near flammable
objects. Doing so may result in fire or injury.
●
Provide a measure to retain the position of the
moving parts of the equipment when the product is
used in a vertical application. The actuator loses its
holding capability when the power is cut off. Without
an appropriate measure the moving parts will
descend, resulting in injury or equipment damage.
●
Do not use the actuator’s built-in electromagnetic
brake mechanism for stopping or for safety
purposes. Using it for purposes other than
holding the moving parts and actuator in position
may cause injury or damage to equipment.
■
Installation
●
Install the actuator in an enclosure in order to
prevent injury.
■
Repair, disassembly and modification
●
Do not repair, disassemble or modify the actuator.
Doing so may result in injury.
Caution
■
General
●
Do not use the actuator beyond its specifications.
Doing so may result in injury or equipment damage.
●
Do not touch the actuator during operation or
immediately after stopping. The surface is hot
and may cause a burn.
■
Transportation
●
Do not hold the actuator by the motor leads. Doing
so may result in injury.
■
Installation
●
Do not place flammable objects near the actuator.
Doing so may result in fire or burns.
●
Do not place objects near the actuator that may
prevent proper ventilation. Doing so may result in
equipment damage.
●
Provide a cover for the movable part of the
actuator. Failure to do so may result in injury.
■
Disposal
●
To dispose of the actuator, disassemble it into parts
and components as much as possible and dispose
of individual parts/components as industrial waste.

7
Precautions for use
This section covers the limitations and points to note regarding use of the DRL series actuator.
■
Maximum thrust force
Always operate the actuator under a load not
exceeding the maximum thrust force.
Operating the actuator under a load beyond the
maximum thrust force or allowing the screw shaft
to remain locked may cause damage to the motor’s
bearing (ball bearing).
When using the actuator in a lift application, operate
it under a load not exceeding the maximum vertical
load and without the application of an external force.
■
Maximum load moment
Always operate the actuator under a load moment
within the permissible value.
Operating the actuator continuously in conditions
under a load moment beyond the permissible value
may result in a malfunction or shorter service life of
the actuator.
■
Do not let the screw shaft hit the
stroke end or load
Do not let the screw shaft hit the stroke end or
equipment during operation, since such an impact
may damage the actuator. Should the screw shaft hit
the stroke end or load, retract the shaft at the
recommended starting speed.
Model Recommended starting speed [mm/s (in/sec)]
DRL20, DRL28
0.2 (0.01)
DRL42
0.4 (0.02)
DRL60
0.8 (0.03)
■
For a lift device, provide a measure to
prevent the moving part from dropping
The actuator loses its holding brake force upon the
occurrence of a power failure or when the A.W.OFF (all
windings off) input is turned to “ON”. When the actuator
is used in a lift device such as an elevator, provide a
measure to prevent the moving parts from dropping.
■
Actuator surface temperature
Use the actuator in conditions where its surface
temperature will not exceed 90°C (194°F).
If the surface temperature of the actuator case
exceeds 90°C (194°F) due to operating conditions
(ambient temperature, operating speed, operating
duty, etc.), a damaged motor coil or shorter service
life of the bearing ( ball bearing ) may result.
■
Grease on screw shaft
Grease on the screw shaft may darken slightly
within a short time after the start of operation. This
is not a problem if there is no abnormal noise ( i.e.,
from deflection or interference ). Wipe off the dirty
grease with a rag, and apply new grease.
If the grease on the screw shaft has darkened after
the initial operation (one to three weeks), check the
accuracy of installation.
■
Measure insulation resistance
or conduct a dielectric-strength
test on actuator alone
Measuring insulation resistance or conducting
dielectric-strength test with the actuator and driver
connected may damage your product.
■
Standard type actuator
●
Provide an anti-spin mechanism
for the screw shaft
The standard type cannot be operated without an
anti-spin mechanism for the screw shaft. Always
provide an anti-spin mechanism externally to the
product. In addition, make sure the load installed to
the screw shaft is supported with a linear guide, etc.
●
Installation accuracy
When using the standard type, always install it
within the specified installation accuracy.
Low accuracy of installation may result in a
malfunctioning actuator or shorter service life of the
ball screw. Page 13
●
Stopping the screw shaft
When operating the standard type,
always provide a stroke-end
detection sensor or limit sensor
in order to prevent
the screw shaft from
hitting the stroke end
or load.
●
When a carrier guide for load is provided
When a carrier guide for load is provided, always
use the standard type. (Do not use the guide type.)
Actuator
Sensor
Detection plate

8
■
Guide type
The linear guide of the guide type is mainly used
as the anti-spin mechanism.
Do not apply a load moment to the linear guide of
the DRL20 and DRL28.
The DRL42 and DRL60 can withstand a slight load
moment using the load-mounting taps at the joint.
■
Electromagnetic brake
●
Use the electromagnetic brake type for
an application involving up/down travel.
For a lifter or other device in which the load moves
up and down, use the electromagnetic brake type
and provide an additional safety-brake mechanism
to hold the load in position.
To hold the load in position, apply the electromagnetic
brake only after the actuator has stopped. Repeated
braking for such a purpose will wear the brake hub
excessively, causing its holding ability to drop.
●
Connecting an electromagnetic brake
The electromagnetic brake operates via the ON/OFF
status of the DC power supply. When connecting the
electromagnetic brake leads, observe the correct
polarity. Be sure to connect the supplied varistor
(non-polarized) to protect the switch contacts and
prevent noise. Page 16
■
Adjustment knob type
Use the adjustment knob to adjust the position
manually when the power is off.
Do not touch the adjustment knob when the actuator
is operating. To do so may cause an actuator
malfunction or cause damage to the actuator.

9
Installation
This section covers the actuator’s installation location and method, as well as the method for installing a load.
Location for installation
The actuator is designed and manufactured for use
as a built-in component in industrial equipment.
Install it in a well-ventilated place satisfying the
following conditions, where the product can be
easily accessed for the purpose of inspection.
●
Inside an enclosure that is installed indoors
(provide vent holes)
●
Operating ambient temperature
•Grounded ball screw, Rolled ball screw
: 0 to +40°C (+32 to +104°F) [non-freezing]
•Corrosion-resistant ground ball screw
: +5 to +40°C (+41 to +104°F)
●
Operating ambient humidity 85% or less
(non-condensing)
●
Area that is free of explosive atmosphere or toxic
gas (such as sulfuric gas) or liquid
●
Area not exposed to direct sun
●
Area free of excessive amount of dust, iron
particles or the like
●
Area not subject to splashing water (rains, water
droplets), oil (oil droplets) or other liquids
●
Area free of excessive salt
●
Area not subject to continuous vibration or
excessive shocks
●
Area free of excessive electromagnetic noise
(from welders, power machinery, etc.)
●
Area free of radioactive materials, magnetic fields
or vacuum
Installing the actuator
Install the actuator to a rigid metal plate.
A mounting plate (model: PADRL-□□ ) is available
as an option. See page 11 for details.
1. Insert the pilot located on the actuator’s
installation surface into the metal plate’s
countersunk hole or through-hole.
2. Securely tighten the four screws so as to leave
no gaps between the actuator’s installation
surface and the metal plate.
Install the actuator to a metal plate [with a
thickness of 5 mm (0.2 inch) or more] with a
smooth surface providing excellent vibration
resistance and thermal conductivity.
Metal plate
5 mm (0.2 inch
) or more
Hexagonal
socket screw
Spring washer
Tapped holes
Pilot hole
Pilot
The above figure shows an installation
example of the standard type.
●
Details of tapped hole
M
L0L
Model Nominal diameter
of bolt Tightening torque
[N·m (oz-in)] Dimension of tapped hole [mm (inch)]
øM L0 L (Effective depth)
DRL20 M2 0.4 (56) 2.3 (0.09) 2 (0.08) 5 (0.2)
DRL28 M 2.5 0.6 (85) 3 (0.12) 2 (0.08) 6 (0.24)
DRL42 M4 1.8 (250)
- - 8 (0.31)
DRL60 M5 5.0 (710) 5.5 (0.22) 4 (0.16) 10 (0.39)

10
■Plate cutout for mounting Unit=mm (inch)
●
Standard type
L 0.1 (L 0.004)
L 0.1 (L 0.004)
A4 x
B
DRL20 DRL28 DRL42 DRL60
L16 (0.63) 23 (0.906) 31 (1.22) 50 (1.969)
A2.3 (0.09) 3 (0.12) 4.5 (0.18) 5.5 (0.22)
B
16 to 17 (0.63 to 0.67) 22 to 23 (0.87 to 0.91) 25 to 27 (0.98 to 1.06) 36 to 38 (1.42 to 1.5)
●
Guide type
RH
RG
RH
RH
F
E
D
B
C
I
L 0.1 (L 0.004)
L 0.1 (L 0.004)
A4 x
DRL20 DRL28 DRL42 DRL60
L16 (0.63) 23 (0.906) 31 (1.22) 50 (1.969)
A2.3 (0.09) 3 (0.12) 4.5 (0.18) 5.5 (0.22)
B
16 to 17 (0.63 to 0.67) 22 to 23 (0.87 to 0.91) 25 to 27 (0.98 to 1.06) 36 to 38 (1.42 to 1.5)
C20 (0.79) or more 26 (1.02) or more 34 (1.34) or more 50 (1.97) or more
D11 (0.43) or more 15 (0.59) or more 22 (0.87) or more 31 (1.22) or more
E10 (0.39)
15.5 to 17.5 (0.61 to 0.69) 25 to 26 (0.98 to 1.02) 32 to 34 (1.26 to 1.34)
F28 (1.1) or more 30 (1.18) or more 42 (1.65) or more 58.5 (2.3) or more
G
3 to 5 (0.12 to 0.2) 3 to 5 (0.12 to 0.2) 4 to 6 (0.16 to 0.24) 5 to 8 (0.2 to 0.31)
H∗R2 (0.08) or less R2 (0.08) or less R2 (0.08) or less R3 (0.12) or less
I
13 to 14 (0.51 to 0.55) 14 to 16 (0.55 to 0.63) 18 to 22 (0.71 to 0.87) 29 to 35 (1.14 to 1.38)
∗C, F and I indicate the minimum dimensions, while E indicates the
maximum dimension.
NOTE
Do not remove the guide from the screw shaft.
The installation accuracy of the screw shaft will
decrease, resulting in a malfunctioning actuator or
shorter service life of the actuator.

11
Installing the actuator using a
mounting plate PADRL-□□
(sold separately)
1. Installing the actuator and mounting plate
Install the mounting plate to the actuator by
tightening the supplied screws (four pieces) into
the tapped holes.
●
Standard type
Illustration shows the DRL60P standard type.
Mounting plate
Screw
Tapped holes
●
Guide type
Illustration shows the DRL60P Guide type.
Tapped holes
Mounting plate
Mounting plate
Screw
Model Nominal diameter
of bolt Tightening torque
[N·m (oz-in)]
DRL20 M2 0.4 (56)
DRL28 M 2.5 0.6 (85)
DRL42 M4 1.8 (250)
DRL60 M5 5.0 (710)

12
2. Mounting to the equipment
Mount the mounting plate to the equipment
using two screws (not supplied).
Three methods are available.
●
Type A
Model
Nominal diameter
of bolt Effective depth
[mm (inch)]
Tightening torque
[N·m (oz-in)]
DRL20 M3 6 (0.236) 1.0 (142)
DRL28 M3 8 (0.315) 1.0 (142)
DRL42 M5 10 (0.394) 5.0 (710)
DRL60 M6 10 (0.394) 5.0 (710)
●
Type B
Model
Nominal diameter
of bolt Effective depth
[mm (inch)]
Tightening torque
[N·m (oz-in)]
DRL20 M4 5 (0.197) 1.8 (250)
DRL28 M4 5.5 (0.217) 1.8 (250)
DRL42 M6 7.5 (0.295) 5.0 (710)
DRL60 M8 16.5 (0.65) 5.0 (710)
●
Type C
Model Nominal diameter
of bolt Tightening torque
[N·m (oz-in)]
DRL20, DRL28 M3 1.0 (142)
DRL42 M5 5.0 (710)
DRL60 M6 5.0 (710)

13
Installing a load
■Standard type
The standard type cannot be operated without an
anti-spin mechanism for the screw shaft. Always
provide an anti-spin mechanism externally to the
product. In addition, make sure the load installed to
the screw shaft is supported with a linear guide, etc.
NOTE
When transporting the equipment in which the
actuator is installed, be sure to remove the load
from the screw shaft.
●
Installation method
Install the load into the load mounting taps using a
screw (or nut, in the case of the DRL20 and
DRL28). The screw, nut, and washer are not
supplied with the product.
1. Retract the screw shaft until it stops at the set
collar.
DRL20, DRL28 DRL42, DRL60
Set collar
Set collar
2. Holding the flat section of the screw shaft with
a wrench, affix the load with a screw (or nut, in
the case of the DRL20 and DRL28).
DRL20, DRL28 DRL42, DRL60
Nut
Washer
Screw
Model Nominal diameter
of screw/nut Tightening torque∗
[N·m (oz-in)]
DRL20, DRL28 M3 nut 0.6 (85)
DRL42 M4 screw 1.8 (250)
DRL60 M8 screw 5.0 (710)
∗Use of a thread locking adhesive is recommended.
NOTE
When installing a load to the DRL20 and DRL28
standard type, chamfer the load-mounting hole by a
factor of 0.1 (0.004). Chamfering the end face of the
screw shaft may result in a malfunctioning actuator
or shorter service
life of the actuator.
M3 nut
3.2 (0.126)
MAX.7 (0.276)
C0.1 (0.004)
Washer
DRL20 and
DRL28
screw shaft
Unit= mm (inch)
●
Installation accuracy
When installing a load to the screw shaft of the
standard type, ensure the installation accuracy
specified below.
Similar accuracy is needed when using a mounting
plate (sold separately).
Make sure the following mounting accuracy is provided
using a dial test indicator or clearance gauge. Low
accuracy of installation may result in a malfunctioning
actuator or shorter service life of the actuator.
A
Parallelism
Perpendicularity
Standard type
Linear guide
Perpendicularity Parallelism
DRL20: DRL20:
ø0.02 (0.0008)
A
0.02 (0.0008)
A
DRL28: DRL28:
ø0.03 (0.0012)
A
0.03 (0.0012)
A
DRL42, DRL60: DRL42, DRL60:
ø0.05 (0.002)
A
0.05 (0.002)
A
Unit= mm (inch)
NOTE
If abnormal noise is heard from the actuator or the
grease on the screw shaft has darkened after the
initial operation (one to three weeks), check the
accuracy of installation.

14
■Guide type
NOTE
●
Do not apply an overhung load to the joint of the
guide type. Also, do not apply a load moment to
the joint of the DRL20 and DRL28 guide type.
Doing so may result in a malfunction or shorter
service life of the actuator.
●
When transporting the equipment in which the
actuator is installed, be sure to remove the load
from the screw shaft.
●
Installation method
●
When using load-mounting taps on the
screw shaft side
Install the load using load-mounting taps at the
joint and appropriate screws (not supplied with
the product).
1. Retract the screw shaft until it stops at the
set collar.
Set collar
2. Affix the load with a screw.
Screw
Load mounting taps
L
0.3
(
L
0.012)
Model Nominal diameter
of bolt
Tightening
torque
[N·m (oz-in)] Effective depth
[mm (inch)] L [mm (inch)]
DRL20 M2 0.4 (56) 4 (0.157) 15 (0.591)
DRL28 M2.5 0.6 (85) 5 (0.197) 16 (0.63)
DRL42 M4 1.0 (142) 7.5 (0.295) 20 (0.787)
DRL60 M5 2.0 (280) 11.5 (0.453) 30 (1.181)

15
●
When using load-mounting taps on the linear
guide side
Install the load using load-mounting taps at the joint
and appropriate screws (not supplied with the
product).
Screw
Load mounting taps
W 0.3
(
W 0.012)
L
0.3
(
L
0.012)
Model Nominal diameter
of bolt
Tightening
torque
[N·m (oz-in)] Effective depth
[mm (inch)] L [mm (inch)] W [mm (inch)]
DRL20 M2 0.4 (56) 4 (0.157) 18 (0.709) 12 (0.472)
DRL28 M2.5 0.6 (85) 3.5 (0.138) 14 (0.551) 12 (0.472)
DRL42 M4 1.0 (142) 5.5 (0.217) 24 (0.945) 19 (0.748)
DRL60 M5 2.0 (280) 5.5 (0.217) 22 (0.866) 28 (1.102)
NOTE
When using the load mounting taps on the linear
guide side, use screws that do not exceed the
effective depth of threads in the linear guide.
Use of long screws exceeding the effective depth
may damage the linear guide.
Effective depth
Load
Linear guide

16
Connection
Connecting the driver
See the operating manual for the driver.
Connecting the electromagnetic
brake
This section covers the connecting the
electromagnetic brake. See the operating manual
for the driver about connecting the driver.
■Connecting the electromagnetic
brake
Connect the two lead wires [600 mm (24 inch)] from
the actuator to the DC power supply.
1. Connect the red/white lead wire to the +24 V
terminal of the DC power supply.
2. Connect the black/white lead wire to the GND
terminal of the DC power supply.
3. Connect the varistor in parallel across the +24 V
and GND terminals of the DC power supply.
●
DRL42P, DRL60P
Varistor
Switch
Black/white
Red/white
Actuator
Motor leads
24 VDC
●
DRL42M, DRL60M
Varistor
Switch
Black/white
Red/white
Actuator
24 VDC
■Connecting power supply for
the electromagnetic brake
The electromagnetic brake operates via the ON/OFF
status of the DC power supply. For the
electromagnetic brake, provide a power source of
24 VDC ±5%, 0.08 A or more if you are using the
DRL42, or one of 24 VDC ±5%, 0.25 A or more in
the case of the DRL60.
Use a shielded cable of AWG24 (0.2 mm2) or more
in diameter to connect the electromagnetic brake to
the DC power supply, keeping the length as short
as possible.
■Timing chart for the
electromagnetic brake
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Electromagnetic brake
Electromagnetic brake
power input
All windings off signal
Actuator operation
Actuator free
Release
(free)
30 ms or less
Operation
Active
(hold) Active (hold)
Stop Stop
20 ms or less
0 ms or more 100 ms or more
20 ms or more 100 ms
or more

17
Operation
How to use the adjustment
knob
(Applicable only to adjustment knob type)
Use this knob to adjust the position when the
power is off by manually moving the screw shaft.
Turning the adjustment knob by one revolution
moves the screw shaft by the length of the lead
[DRL20, DRL28: 1 mm (0.039 inch), DRL42: 2 mm
(0.079 inch), DRL60: 4 mm (0.157 inch)].
Adjust the position within the effective stroke range.
Adjustment knob
Screw shaft moves backward
Screw shaft moves forward
NOTE
Do not touch the adjustment knob when the actuator
is operating. To do so may cause an actuator
malfunction or cause damage to the actuator.
Operating speed at low
temperature
If the ambient temperature is 10°C (+50°F) or below,
keep the maximum speed to the applicable value
shown in the table.
Model Ambient
temperature
Maximum speed
mm/s (in/sec)
DRL20
0 to +10°C
(+32 to +50°F)
13 (0.51)
DRL28PA, DRL28PB 15 (0.59)
DRL42PA, DRL42PB 20 (0.79)
DRL60PA, DRL60PB 24 (0.94)
DRL28PBL +5 to +10°C
(+41 to +50°F)
15 (0.59)
DRL42PBL 20 (0.79)
DRL60PBL 24 (0.94)
DRL28MB 0 to +10°C
(+32 to +50°F)
12 (0.47)
DRL42MB 15 (0.59)
DRL60MB 22 (0.87)
DRL28MBL +5 to +10°C
(+41 to +50°F)
12 (0.47)
DRL42MBL 15 (0.59)
DRL60MBL 22 (0.87)
Screw shaft projection
With actuators whose stroke is 60 mm (2.36 inch)
or more, the long screw shaft projects from the end
face of the actuator as shown in the figure. For
these actuators, provide a sufficient space in the
rear to prevent the screw shaft from contacting
other parts, etc.
Model
Maximum projection length (A)
mm (inch)
DRL28PA1-06G
DRL28PB1-06G 28 (1.1)
DRL42PA2-10G
DRL42PB2-10G 73 (2.9)
DRL60PA4-10G
DRL60PB4-10G 64 (2.5)
A

18
Maintenance/Inspection
It is recommended that the following items be
checked regularly after operation.
Should an abnormality be noted, discontinue any
use and contact your nearest Oriental Motor office.
■Inspection items
●
Are there any loose actuator-mounting screws ?
●
Is there any abnormal noise coming from the
actuator motor, screw shaft, linear guide, etc. ?
●
Is there any scratching or stress on the motor leads
or loose connection between the leads and driver ?
●
Is there any misalignment between the actuator’s
screw shaft and the load’s shaft ?
●
Is the grease on the actuator’s screw shaft or
linear guide darker ?
■Changing grease
When the grease on the actuator ’ s screw shaft or
linear guide has become dirty, wipe off the dirty
grease completely with a rag, and apply new grease.
●
Grease check interval
●
Once every week of operation
●
Once every month
●
Recommended grease
●
Grounded ball screw, Rolled ball screw
Screw shaft: AFC Grease (THK CO., LTD.)
Linear guide: Multemp PS No. 2 (KYODO YUSHI
CO., LTD.)
●
Corrosion-resistant ground ball screw
Screw shaft: AFE-CA Grease (THK CO., LTD.)
Linear guide: AFE-CA Grease (THK CO., LTD.)
NOTE
Wear protective goggles when applying grease. Pay
attention to safety and handle the grease carefully
by following the instructions provided with that
product. If grease gets into the eyes or comes in
contact with the skin, immediately flush the area
thoroughly with water.

19
Options
■Motor cable
Used for actuator connection by means of connector coupling.
Model Cable length [m (ft.)] Applicable product
LC5N10A 1 (3.3) DRL20, DRL28M
LC5N10B 1 (3.3) DRL42M
LC5N10C 1 (3.3) DRL60M
■Connector set (Molex)
A set of connector housings and contacts matching a connector-type actuators.
Each bag contains enough housings and contacts for connecting 30 actuators.
Model Applicable
actuator Connector housings
(30 pieces) Contacts (180 pieces) Applicable cable
CS5N30A DRL20
DRL28M 51065-0500 50212-8100
AWG30 to 24 (0.05 to 0.2 mm
2
)
Outer diameter of sheathed cable:
ø1.4 mm (ø0.06 in.) or less.
Stripped length: 1.3 to 1.8 mm (0.05 to 0.07 in.)
CS5N30B DRL42M 51103-0500 50351-8100
AWG28 to 22 (0.08 to 0.3 mm
2
)
Outer diameter of sheathed cable:
ø1.15 to 1.8 mm (ø0.05 to 0.07 in.)
Stripped length: 2.3 to 2.8 mm (0.09 to 0.11 in.)
CS5N30C DRL60M 51144-0500 50539-8100
AWG24 to 18 (0.2 to 0.75 mm
2
)
Outer diameter of sheathed cable:
ø1.4 to 3 mm (ø0.06 to 0.12 in.)
Stripped length: 3 to 3.5 mm (0.12 to 0.14 in.)
■Mounting plate
A dedicated mounting bracket used to install the actuator.
Model Applicable product
PADRL-20 DRL20
PADRL-28 DRL28
PADRL-42 DRL42
PADRL-60 DRL60

• Please contact your nearest Oriental Motor oce for further information.
T
echnical Support Tel:[phone]
8:30
A.M. to 5:00 P.M., P.S.T. (M-F)
7:30
A.M. to 5:00 P.M., C.S.T. (M-F)
www
.orientalmotor.com
Schiessstraße 44, 40549 Düsseldor
f, Germany
T
echnical Support Tel:[phone]
www
.orientalmotor.de
T
el:01256-347090
www
.oriental-motor.co.uk
T
el:01 47 86 97 50
www
.orientalmotor.fr
T
el:02-93906346
www.orientalmotor.it
Tel:[phone]
www.orientalmotor.com.tw
Singapore
Tel:[phone]
www.orientalmotor.com.sg
Tel:[phone]
www.orientalmotor.com.my
Korea
Tel:[phone]
www.inaom.co.kr
4-8-1 Higashiueno, Taito-ku, Toky
o
110-8536 Japan
Tel:[phone]
www.orientalmotor.co.jp
Tel:[phone]
www.orientalmotor.co.th
Tel:[phone]
www.orientalmotor.com.cn
T
el:[phone]
www
.orientalmotor.com.br
Tel:[phone]
www.orientalmotor.co.in
Hong Kong Branch
Tel:[phone]
Published in January 2018