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50 mm Linear Translation Stage, Direct-Drive Servo Motor


  • High Speed Translation of up to 500 mm/s
  • Backlash-Free DC Servo Motor
  • Stackable in XY Configuration
  • Compatible with Compact
    K-Cube Controller

DDSM50

XY Configurable

KBD101

Controller for the DDSM50(/M)
(Shown with Included Mounting Plate)

Related Items


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Item # DDSM50
Travel Range 50 mm (1.97")
Velocity (Max) 500 mm/s
Velocity (Min) 70 nm/s
Acceleration (Max) 5000 mm/s2
Acceleration (Min) 0.74 mm/s2
Acceleration at 1.0 kg Load 500 mm/s2
Resolution (Min) 500 nm
Bidirectional Repeatabilitya ±1.5 µm
Flatness over Full Travel Range ±5.0 µm
Straightness over Full Travel Range ±5.0 µm
Horizontal Load Capacity (Max) 0.9 kg (1.98 lbs)
Min Achievable Incremental Movementb 500 nm
Home Location Accuracy 1.5 µm
Absolute On-Axis Accuracy ±5 µm
Dimensions (L x W x H) 145 mm x 57 mm x 35 mm
(7.71" x 2.25" x 1.38")
  • The average of the repeatability when a set position is approached from both directions.
  • The measured minimum incremental motion that the stage can achieve, also referred to as the minimum step size.
Motorized Linear Translation Stages
12 mm Standard
25 mm Compact
Standard
TravelMax
50 mm Compact
Direct-Drive Servo
TravelMax
Long Travel: 100 mm to 300 mm

Features

  • Travel Range: 50 mm
  • High Speed: Up to 500 mm/s
  • High Repeatability: 1.5 µm
  • On-Axis Accuracy: <10.0 µm
  • Low Profile: 35 mm (1.38")
  • Integrated Brushless DC Linear Servo Motor Actuators
  • Linear Optical Encoders
  • High-Quality, Precision-Engineered Linear Bearings

Thorlabs' DDSM50 low-profile, direct-drive stage provides 50 mm of travel with 0.5 µm resolution and a maximum speed of 500 mm/s. The stage is ideal for applications that require high speeds and high positioning accuracy, including automated alignment, surface inspection, mapping, and probing.

An innovative, low-profile design with integrated, brushless linear motors eliminates the external housings that create mechanical clash points and impede access to the moving platform. The direct-drive technology removes the need for a lead screw, eliminating backlash, and internal flexible ducting ensures cables cannot become trapped as the mechanism moves. A precision-grooved linear bearing provides superior rigidity and linearity with excellent on-axis accuracy. This backlash-free operation coupled with high-resolution, closed-loop optical feedback ensures a minimal bidirectional repeatability of 1.5 μm.

Controller Options
The controller for the DDSM50 direct-drive, linear translation stage is the KBD101 K-Cube Brushless DC Motor Controller. This controller provides a user-configurable, S-curve acceleration/deceleration profile that enables fast, smooth positioning without vibration or shock. See below for a brief overview, or click here to view the full presentation for these Brushless DC Motor Controllers.


Click for Enlarge

Two DDSM50 Stages can be Connected in an XY Configuration Using the DDSMP1 XY Adapter Plate

Dual-Axis Configuration
For dual-axis applications, two stages can be bolted together in an XY configuration by using the DDSMP1 XY adapter plate as shown to the left. Note that these stages are not suitable for operation in a vertical (Z-axis) orientation. Please contact Tech Support for more details.

Adapter brackets are also available that allow optomechanical components to be mounted close to the linear travel of the stage in applications such as a delay line.
Please see below for more details.

Please Note: Magnetic components should not be mounted to the stage platform. Magnets prevent proper homing and can affect the accuracy of the stage's encoder even after the magnetic component has been removed. When no power is applied, the platform of the stage has very little inertia and is virtually free running. This may make the stage unsuitable for applications where the stage's platform needs to remain in a set position when power is off.

Item #DDSM50
Travel Range 50 mm (1.97")
Velocity (Max) 500 mm/s
Velocity (Min) 70 nm/s
Acceleration (Max) 5000 mm/s2
Acceleration (Min) 0.74 mm/s2
Acceleration at 1.0 kg Load 500 mm/s2
Resolution (Min) 500 nm
Bidirectional Repeatabilitya ±1.5 µm
Flatness over Full Travel Range ±5.0 µm
Straightness over Full Travel Range ±5.0 µm
Pitch Runout ±175 µrad
Yaw Runout ±175 µrad
Horizontal Load Capacity (Max) 0.9 kg (1.98 lbs)
Min Achievable Incremental Movementb 500 nm
Home Location Accuracy 1.5 µm
Absolute On-Axis Accuracy ±5.0 µm
Continuous Motor Force 0.8 N
Peak Motor Force (5 s) 2.0 N
Bearing Type High-Rigidity Recirculating Precision Linear Bearing
Limit Switches Magnetic Sensor at Each End of Stage
Operating Temperature Range 5 to 40 °C (41 to 104 °F)
Motor Type Brushless DC Linear Motor
Cable Length 1 m (3.3')
Dimensions (L x W x H) 145 mm x 57 mm x 35 mm
(5.71" x 2.25" x 1.38")
Weight (with Cables) 600 g (1.3 lbs)
Motor Electrical Specifications
Magnetic Pitch 30 mm
Maximum Continuous Current 1.2 A
Maximum Current (5 s) 2 A
Motor Resistance 1.3 Ω (Phase to Phase)
Inductance 45 µH (Phase to Phase)
Force Constant 1 N/A
  • The average of the repeatability when a set position is approached from both directions.
  • The measured minimum incremental motion that the stage can achieve, also referred to as the minimum step size.

Motor Control Connector

D-Type Male

d-type_long

Pin Description Pin Description
1 Quadrature A- 9 Ground
2 Quadrature A+ 10 Motor Phase C
3 Quadrature B+ 11 Motor Phase A
4 Quadrature B- 12 Motor Phase B
5  Encoder Index I- 13 +5 V
6  Encoder Index I+ 14 Ground
7 Negative Limit 15 Stage ID
8 Positive Limit


Posted Comments:
tillsten  (posted 2018-11-12 21:20:09.777)
It is possible to use the stage vertically?
AManickavasagam  (posted 2018-11-14 06:51:56.0)
Response from Arunthathi at Thorlabs - Thanks for your query. These do not have enough torque to be used in the Z configuration. You probably need a stage with a lead screw that provides sufficient torque such as our LNR50 or MTS50/M-Z8.
linahacker91  (posted 2018-09-03 17:42:07.397)
Hello, I'm looking for a linear 50 mm motorized stage with high position accuracy (Travel speed is not important and the load will be very low) and the positioning should be repeatable. I should probably choose a stepper motor, right? Or is there a cheaper option? Thank you for your help!
AManickavasagam  (posted 2018-09-06 05:43:28.0)
Response from Arunthathi @ Thorlabs: Thanks for your query. Yes you are correct comparatively for better repeatability, it will be best to use a stepper motor actuator - stage such as the LNR50S which has 0.5 µm Bidirectional repeatability. However, for even more precise positioning we offer LNR50SE which has an inbuilt encoder that works in closed loop with the actuator to maintain positional accuracy.
tim.may  (posted 2017-11-21 14:48:57.217)
Hi, occasionally the ddsm50 will not 'home', gives 'Motor Error Detected (Value-position Error(0))' I end up closing the software and shutting off the kbd101 controller sn 28000398 and restarting, sometime it comes back ok, sometimes takes several cycles of the power. What's up with it? the load is 0.48 kg, but even with load removed still fails to home. Thanks for any help. Tim
bhallewell  (posted 2017-12-01 09:12:28.0)
Response from Ben at Thorlabs: Thank you for contacting us. This Position Error message is posted when the achieved position is significantly different to the expected position. Typically this can be caused by running too fast with the given load. If the problem persists, it is suggested to Home the device at a lower velocity. I will contact you directly to troubleshoot the issue.
tim.may  (posted 2017-10-16 13:11:26.45)
HI again, I asked about loading at .59# but realise i also have a plate mounted that is 0.48# so the total is >1 kg, beyond the 0.9 limit. my bad, trying another plate thanks tim
bwood  (posted 2017-10-17 06:24:02.0)
Response from Ben at Thorlabs: Thank you for your feedback. You should try and limit the load on the stage to below 1kg. However, you may have to change the PID loop settings to suit the load on the stage anyway. You can find more details on this in section 6.3.4 of the KBD101 manual.
tim.may  (posted 2017-10-14 12:47:37.067)
I have a single stage with load of 1.24# or .56 kg and the stage oscillates on positioning away from home. can some parameter in the loop be adjusted to stop the oscillation? I saw comment here that state 0.9kg is possible, but couldn't find that on spec page. Thanks
bwood  (posted 2017-10-17 06:33:26.0)
Please find my responce above.
d.baresch  (posted 2017-07-24 17:47:57.79)
The maximum specified horizontal load is 0.9kg. Does this mean that with 2 DDSM50 mounted in XY configuration the only useful load left is 0.3kg (given 1 DDSM50 weighs 0.6kg)?
bwood  (posted 2017-07-25 10:56:41.0)
Response from Ben at Thorlabs: Thank you for your feedback. This is correct, according to the specifications the maximum load of an XY DDSM50 assembly will be 0.3 kg. If you need a high load, we would recommend the MTS50 and LNR50.
zali023  (posted 2016-08-21 15:14:16.467)
Hi I am currently using a 50 mm (1.97") Compact Motorized Translation Stage, but its velocity stability at ±0.25 mm/sec is too high my application, could you please advise me on the velocity stability for this instrument?
bhallewell  (posted 2016-08-22 11:20:52.0)
Response from Ben at Thorlabs: Thank you for your feedback. The velocity ripple would be dependent upon the PID control loop settings, the load applied to the stage & also the velocity that you are moving to & from. Generally moving to a lower velocity, you will find a higher percentage ripple however at a reduced deviation. I will contact you to obtain details of your setup to see if this can be optimised.
vopop  (posted 2016-06-09 15:03:32.63)
I want to use DDSM50 with '30 mm Cubes with Premounted Turning Mirrors' in vertically aligned state. I saw there written we can not use in vertically aligned state. So, I wonder whether this means just due to there is no stopping force or its due to malfunctioning.
besembeson  (posted 2016-06-09 09:41:15.0)
Response from Bweh at Thorlabs USA: Yes it is due to no stopping force. When no power is applied, the stage has very little inertia so the platform will roll down under its weight and mounted components.
cbrideau  (posted 2015-09-23 18:34:29.417)
What is the typical Angular Deviation for this mount?
bhallewell  (posted 2015-09-30 06:49:25.0)
Response from Ben at Thorlabs: Thank you for your question here. The spec that you are looking for would be synonymous with the Pitch & Yaw Run-out, which is ±175 µrad. This detail can be located in the ‘Specs’ tab.

50 mm Linear Translation Stage, DC Direct-Drive Servo Motor

Characterized by high-speed translation and high-positional accuracy, the DDSM50 stage is well-suited for surface mapping and characterization applications where there is a need to move a camera or probe at constant velocity while simultaneously capturing data. Very precise, fine positioning and control is easily achieved through a combination of the stable closed-loop control system and a KBD101 controller.

Please Note: Magnetic components should not be mounted to the stage platform. Magnets prevent proper homing and can affect the accuracy of the stage's encoder even after the magnetic component has been removed. These stages are not suitable for operation in a vertical (Z-axis) orientation. When no power is applied, the platform of the stage has very little inertia and is virtually free running. This may make the stage unsuitable for applications where the stage's platform needs to remain in a set position when power is off. 

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Imperial Price Available
DDSM50 Support Documentation
DDSM50Customer Inspired! Compact 50 mm Travel Direct Drive Stage, Imperial
$2,128.53
Today
+1 Qty Docs Part Number - Metric Price Available
DDSM50/M Support Documentation
DDSM50/MCustomer Inspired! Compact 50 mm Travel Direct Drive Stage, Metric
$2,128.53
Today

DDSM50 Adapter Plates


Click to Enlarge

Optomechanical Components can be Mounted Next to the Travel Range of the DDSM50 Stage Using DDSMA1 and DDSMA2 Adapter Plates

For 2-axis applications, two DDSM50 stages can be bolted together in an XY configuration using the DDSMP1 adapter plate as shown above in the Overview tab.

The DDSMA1 and DDSMA2 adapter plates attach to the end of the DDSM50 stage using the two supplied M3 x 20 screws (see image to the right) and allow optomechanical components to be mounted close to the linear travel of the stage in applications such as a delay line. The plates are drilled and tapped with six 1/4”-20 (M6) and five 8-32 (M4) holes.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Imperial Price Available
DDSMP1 Support Documentation
DDSMP1XY Adapter Plate for DDSM100 Stage, Imperial
$86.57
Today
DDSMA1 Support Documentation
DDSMA1Left Mounting Plate for DDSM100 Stage, Imperial
$68.45
Today
DDSMA2 Support Documentation
DDSMA2Right Mounting Plate for DDSM100 Stage, Imperial
$68.45
Today
+1 Qty Docs Part Number - Metric Price Available
DDSMP1/M Support Documentation
DDSMP1/MXY Adapter Plate for DDSM100 Stage, Metric
$86.57
Today
DDSMA1/M Support Documentation
DDSMA1/MLeft Mounting Plate for DDSM100 Stage, Metric
$68.45
Today
DDSMA2/M Support Documentation
DDSMA2/MRight Mounting Plate for DDSM100 Stage, Metric
$68.45
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K-Cube™ Brushless DC Servo Driver

photo of power supply adapters
Click to Enlarge

KCH601 USB Controller Hub (Sold Separately) with Installed K-Cube and T-Cube™ Modules (T-Cubes shown on the KAP101 Adapter)
  • Front Panel Velocity Wheel and Digital Display for Controlling Motorized Stages or Actuators
  • Two Bidirectional SMC Trigger Ports to Read or Control External Equipment
  • Interfaces with Computer Using Included USB Cable
  • Fully Compatible with Kinesis® or APT™ Software Packages
  • Compact Footprint: 60.0 mm x 60.0 mm x 49.2 mm (2.42" x 2.42" x 1.94")
  • Power Supply Not Included (See Below)

Thorlabs' KBD101 K-Cube™ Brushless DC Motor Controller provides local and computerized control of a single motor axis. It features a top-mounted control panel with a velocity wheel that supports four-speed bidirectional control with forward and reverse jogging as well as position presets. A backlit digital display is also included that can have the backlit dimmed or turned off using the the top-panel menu options. The front of the unit contains two bidirectional SMC trigger ports that can be used to read a 5 V external logic signal or output a 5 V logic signal to control external equipment. Each port can be independently configured.

The unit is fully compatible with our new Kinesis software package and our legacy APT control software.

Please note that this controller does not ship with a power supply. Compatible power supplies are listed below. Additional information can be found on the main KBD101 Brushless DC Servo Motor Controller page.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
KBD101 Support Documentation
KBD101K-Cube Brushless DC Servo Driver (Power Supply Not Included)
$791.03
Today

Compatible Power Supplies

photo of power supply adapters
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A location-specific adapter is shipped with the power supply unit based on your location. The adapters for the KPS101 are shown here.
photo of power supply options
Click to Enlarge

The KPS101 Power Supply Unit
  • Individual Power Supply
    • KPS101: For K-Cubes™ or T-Cubes™ with 3.5 mm Jacks
  • USB Controller Hubs Provide Power and Communications
    • KCH301: For up to Three K-Cubes or T-Cubes
    • KCH601: For up to Six K-Cubes or T-Cubes

The KPS101 power supply outputs +15 VDC at up to 2.4 A and can power a single K-Cube or T-Cube with a 3.5 mm jack. It plugs into a standard wall outlet.

The KCH301 and KCH601 USB Controller Hubs each consist of two parts: the hub, which can support up to three (KCH301) or six (KCH601) K-Cubes or T-Cubes, and a power supply that plugs into a standard wall outlet. The hub draws a maximum current of 10 A; please verify that the cubes being used do not require a total current of more than 10 A. In addition, the hub provides USB connectivity to any docked K-Cube or T-Cube through a single USB connection.

For more information on the USB Controller Hubs, see the full web presentation.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
KPS101 Support Documentation
KPS10115 V, 2.4 A Power Supply Unit with 3.5 mm Jack Connector for One K- or T-Cube
$35.36
Today
KCH301 Support Documentation
KCH301USB Controller Hub and Power Supply for Three K-Cubes or T-Cubes
$524.83
Today
KCH601 Support Documentation
KCH601USB Controller Hub and Power Supply for Six K-Cubes or T-Cubes
$635.20
Today
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