ClearPath® - Integrated Servo System


The ClearPath-SDSK model allows you to precisely servo-control position (and velocity) using “step & direction” (or quadrature A/B) command signals. These digital signals are commonly used to control stepper motors and digital servos, so they are available from a wide variety of products including PLCs and stand-alone motion control “indexers”. Compared to ClearPath-SDHP models, which also use step & direction control signals, the SDSK models have less peak torque, but are a lower price for any given amount of continuous (RMS) shaft torque and power.

Operating Modes

Step and DirectionOne ClearPath input counts steps from your motion controller, the other input determines if the steps are made in the clockwise or counter-clockwise direction.
Quadrature A/BQuadrature input allows you to use the output of a quadrature encoder to command position and speed. Or, you can use an indexer or PLC with quadrature outputs to command at a speed that is 4x the output frequency (because each edge counts as a "step").

Torque/Speed Curves

Peak Torque


Cont. (RMS) Torque
at 30°C


Speed (RPM)
Torque (oz-in)
Torque (N-m)
Peak Torque
Cont. (RMS) Torque
Max Speed
Peak Power
Cont. (RMS) Power


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$664 Volume pricing requires registration
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Click the "See Accessories" button to view a list of required and recommended accessories to complete your ClearPath system. Select from assorted cables and more. Also, download your free copy of ClearPath software.


Motor Frame SizeNEMA 34 - 3.42 in (86.87 mm) sq.
Length5.38 in (136.65 mm)
Input (bus) Voltage Range24-75 VDC (90 VDC max)
Peak Torque (@75 VDC)1,200 oz-in (8.5 N-m)
Cont. (RMS) Torque (@75 VDC)300 oz-in (2.1 N-m)
Max Speed (@75 VDC)1800 RPM
Achievable Resolution 0.057 degrees
Repeatability 0.03 degrees
Shaft Diameter 0.500 in (12.70 mm)
Weight7.3 lb (3.3 kg)
Rotor Inertia15.5 oz-in² (2.8 kg-cm²)
Logic Input Voltage Range4.0 to 28 VDC
Maximum Radial Load 50 lbf (222.4 N)
Maximum Thrust Load10.0 lbf (44.5 N)
Ambient Temperature1-40° to +70° C
Ambient Humidity0-95%; non-condensing
Environmental RatingDust & water splash resistant
Regulatory CertificationsUL recognized; cUL recognized; CE; RoHS
Country of OriginUSA
Warranty3 Years

1The RMS torque limit on certain motors is derated for operation in ambient temperatures above +40 degrees C. Contact Teknic for derating assistance.

Motion & I/O Controllers Compatible with ClearPath Servos

Control your ClearPath-SD servo systems with a ClearCore or ClearLink Motion & I/O Controller. ClearCore is a C++ programmable controller for general-purpose machine control, while ClearLink adds motion and I/O capability to any EtherNet/IP-compatible PLC.

With either controller you can coordinate up to four ClearPath-SD motors per controller. You can also control 13 software-configurable, analog and digital I/O points (up to 24VDC). Both controllers can be networked to control larger systems with more motors, and you can use I/O expansion modules to increase the I/O count.

ClearCore — C++ Programmable Controller
ClearCore C++ programmable controller
  • Rich C++ library with dozens of example programs
  • Multiple communications (serial, wireless, etc.)
Learn More
ClearLink — EtherNet/IP Controller
ClearLink EtherNet/IP controller
  • Works with any EtherNet/IP-compatible PLC
  • Powerful EDS file reduces development time
Learn More

Software Options

Compare Basic and Advanced Software Features

FeatureDescriptionBasic Version
Advanced Version
positional moves
Make relative or absolute moves with automatic jerk limiting and jerk-derivative limiting for ultra-smooth motion.checkcheck
Velocity movesRamp up or down to user-selected velocities and rotate continuously. Programmable settings control acceleration, jerk (rate of change of acceleration), and jerk derivative for ultra-smooth changes in speed.checkcheck
Flexible homing routinesHome to a limit switch or hardstop (with gentle, torque-limited hardstop detection). User-defined homing routine can be pre-configured and invoked with one line of code.checkcheck
Read measured position, velocity, torque, and much moreFull access to real-time status of all motion parameters (more than 30 different status indicators)checkcheck
Safety shutdownsConstant, automatic monitoring of a variety of motor operating conditions, and shutdowns as necessary to prevent motor and/or system damage.checkcheck
Soft limitsSet software end-of-motion limits to prevent accidental crashes (can be used simultaneously with physical limit switches).checkcheck
Global torque limitingProgrammable limit on the maximum amount of torque.checkcheck
Automatic brake
coil control
Automatically engage a third-party fail-safe brake when an axis shuts down or is disabled.checkcheck
Group shutdownsAutomatically stop all motion axes simultaneously when any axis has a problem. Also, a global stop input allows non-programmatic simultaneous stopping of all axes using a digital input, button, or switch.checkcheck
Up to 16 axes per
com port
Using low-cost SC Hub boards ($49), create up to 4 "mini-networks" of up to 4 axes each, which can be daisy-chained (distributed or plugged directly into each other without cables) to allow maximum flexibility and minimal wiring.checkcheck
Robust communicationInnovative hardware and communication design allows high command throughput (over 1,000 commands per second) without using noise-sensitive high-speed circuitry or non-deterministic "crash and retry" protocols. All inputs are optically isolated for even more noise immunity.checkcheck
Automatic network configurationNo need for setting DIP switches or programming network addresses. Just power up the system and each axis is automatically addressed based on its position in the network.checkcheck
g-Stop™ anti-vibration move profilesMotion profile sculpting based on patented anti-vibration technology. Allows the fastest possible moves without exciting mechanical resonances in the machine. Easy to configure, and robust operation even as mechanics wear over time. See video demonstration.check
Triggered movesOne or more axes can be configured to start simultaneously upon command or electronic signal for the most precise synchronization requirements.check
Head-tail movesCreate two- or three-part move profiles where the beginning and/or the end of the moves are at a different maximum velocity than the middle part of the moves. This is useful for making fast moves with one or two slower segments (e.g., moving past a camera slowly and then moving to a target quickly, or slowly clamping something at the end of a fast move).check
Asymmetric movesCreate move profiles with different acceleration and deceleration limits. Often, because of friction (or gravity), an axis can decelerate faster than it can accelerate, and this feature allows faster moves in these cases.check
Trigger events at user-defined positionsGet a notification when an axis reaches a certain position (either after the start or before the end of the move) to allow synchronization with other events or processes.check
Positive/Negative torque limitingIndependently limit positive torque and negative torque (typically used in clamping applications).check
Conditional torque limitingAutomatically limit torque (positive and/or negative torque) when an axis is in a certain positional zone, or based on an electrical signal, or when a move completes.check
Attention generationAutomatically generate interrupts based on user-defined events so that you don't have to constantly poll for them. This creates a more responsive and synchronized system.check
Position capturePrecisely capture axis position on-the-fly based on an electronic input.check

AC Blower Kit

Blower Kit

Blower Kit
Part Number: BLOWER-1P230V
Connector: Screw Terminal Block
Length: Adds 2.12 in to motor length (see manual/3D models for specifics)
Input Power: Single-phase 190-230 VAC
Weight: 2.0 lbs

This blower kit (AC powered fan and shroud) provides a significant increase in continuous torque for certain AC-input (integral hp) ClearPath motors. Motor part numbers shown with a “_fan” after them show the increased specifications using this blower. Note that this kit is not IP rated for dust or liquid protection, and needs AC wiring separate from the motor. For wiring and installation instructions, refer to the user manual: AC Input, Integral Horsepower ClearPath Motors
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SC Communication Hub

SC Hub

Communication Hub for ClearPath-SC Series
Part Number: SC4-HUB
Connector: See drawing
Dimensions, in (mm): 3.56 x 5.31 (90.4 x 134.9)
Certifications: UL, CE (pending)

Required for ClearPath-SC systems. Provides network connection for up to four axes. Up to four SC hubs can be daisy-chained to create networks of up to 16 axes (per COM port). Automatic brake control outputs are provided (max of two per daisy-chain). One digital input is provided to stop all axes simultaneously.
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