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Power transmission products are used in mechanical drivetrains to create movement. Components include linear motion slides and actuators, gearboxes, timing belts/pulleys/bushings, and a host of shaft couplings, bore reducers, and other purely mechanical devices.
Mechanical Power Transmission
Category Selection
- Linear Motion Slides and Actuators
- Stepper Motor Linear Actuators
- Linear Shafts
- Linear Shaft Supports
- Polymer Bearings
- General Purpose Cast Iron Worm Gearboxes
- General Purpose Aluminum Worm Gearboxes
- General Purpose Cast Iron Helical Inline Gearboxes
- General Purpose Cast-Iron Helical Bevel Gearboxes
- High-Precision Inline Strain Wave Gearboxes
- Precision Gearboxes for Servomotors
- Precision Gearboxes for Small NEMA Motors
- Helical Racks and Pinions
- Linear Bearings and Rails
- Rotary Shafts
- Grooved Rotary Shafts
- Timing Belts, Timing Pulleys & Tapered Tapered Bushings
- Drive Couplings
- Bore Reducers
Mechanical power transmission is the transfer of mechanical motion between two components. In most cases, the rotation of the primary mover is what causes the movement of the driven component. The driven component's movement may be rotational or linear based on application needs. Torque, speed, and direction may also be altered during this transfer of mechanical energy.
- Linear motion components are driven along a linear path by the rotational motion of an actuator
- Gearboxes provide power transmission between two geared shafts using the interlocking teeth of the primary and secondary gears
- Synchronous drives use belts and pulleys to transfer rotational motion from the primary shaft to the driven shaft(s)
- Shafts, bearings, reducers, and couplings are all used to facilitate mechanical power transmission in industrial machinery
Mechanical Power Transmission Products Overview
Linear Motion Slides and Actuators
Newest Additions!
- igus lead screw- and belt-driven slides
Motor-ready linear actuators and sliding components turn rotary motion into linear motion, providing a variety of X-Y and X-Y-Z positioning system solutions. Options for mounting stepper or servo motors as well as a full selection of accessories are available to complete a linear motion system.
- Ball screw driven actuators - capable of high speeds and duty cycles
- Lead screw driven actuators - provide high performance for light or heavy loads at an economical price
- Belt driven actuators - provide simple, dependable motion along a longer axis
- Undriven linear slides - used in multi-axis systems and run parallel to a linear actuator of the same travel length, typically used to stabilize the X-axis
- XYZ gantry components in all four styles
Stepper Motor Linear Actuators
Stepper motor linear actuators are stepper motors that incorporate a lead screw as the rotor, which translates motor torque into linear thrust. These actuators are often used with undriven linear slides or linear shafts/linear supports.
- NEMA 17 and NEMA 23 frame units available in a range of lengths and lead screw pitches
- Up to 193 lbs of thrust and speeds up to 18 inches/second
- Extension cables and other accessories available
Linear Shafts
Linear shafts are used to support or constrain sliding loads. Available in C1060 medium-carbon steel, 440C stainless steel, or hard-anodized aluminum, all shafts are heat treated for additional hardness.
Linear Shaft Supports
SureMotion standard-height 6061 T6 black and low-profile 6061 T6 gray aluminum supports are hard-anodized and offer superior shaft holding strength.
- Removable top design allows easy removal of shaft
- Maintains alignment while servicing shafts and bearings
- Parallel and perpendicular surfaces for easy alignment
- Fasteners: Alloy Steel, Black Oxide
Polymer Bearings
Polymer bearings are a cost-effective replacement for traditional bearings in many applications. They are very low maintenance, don't require lubrication, and can transform dirty, greasy machinery into clean, smoothly operating equipment while lowering cost. Polymer bearings are available in the following styles:
- Drylin™ R linear bearings are interchangeable with many brands of recirculating ball bearings
- igubal™ mounted spherical bearings are available in five different mounting configurations
- iglide™ plain bearings are great replacements for shaft and flange bearings
General Purpose Cast Iron Worm Gearboxes
IronHorse cast iron worm gearboxes (worm gear speed reducers) are mechanical power transmission drive components that can drive a load at a reduced fixed ratio of the motor speed. The output torque is also increased by the same ratio, while the horsepower remains the same (less efficiency losses).
The lineup of IronHorse cast iron gearboxes includes:
- Four output types: Dual Shaft, Right Hand Shaft, Left Hand Shaft and Hollow Shaft
- Five frame sizes: 1.75", 2.06", 2.37", 2.62", 3.25"
- Seven ratios: 5:1, 10:1, 15:1, 20:1, 30:1, 40:1, 60:1
- IronHorse gearboxes utilize C-face mounting interfaces for C-face motors
- Worm gear reducer mounting bases are also available for ease of installation
General Purpose Aluminum Worm Gearboxes
Aluminum gearboxes feature hollow-shaft outputs (all the way through from one side to the other). For the aluminum gearboxes we also offer optional single and double output shafts, output flanges, torque arms, and output covers. Worm gearboxes contain a worm-type gear on the input shaft, and a worm-type mating gear on the output shaft. These gearboxes also change the drive direction.
- Five frame sizes: 30, 40, 50, 63, 75 mm
- Gear ratios: 10:1 to 100:1 (in most sizes)
- Input faces: 56C, 145TC, 182/4TC
General Purpose Cast Iron Helical Inline Gearboxes
IronHorse inline helical gearboxes with cast-iron frames utilize C-face mounting interfaces for C-face motors. These gearboxes use helical gears to provide quiet startup and smooth operation. Universally interchangeable compact design ensures easy OEM replacement.
- 5 frame sizes (body)
- 56C up to 254/6TC NEMA motor frames
- 6 ratios, 5:1 to 60:1
- Sized to handle from 1 to 20 hp
General Purpose Cast-Iron Helical Bevel Gearboxes
The new HBR series of helical bevel gearboxes combines the helical gearset with a bevel gearset to create an output that is perpendicular to the input. All HBR series gearboxes are hollow shaft output and accept double or single shafts. Dual and single output shaft kits are available.
- 5 frame sizes (body)
- 56C up to 254/6TC NEMA motor frames
- 9 ratios, 10:1 to 120:1
- Sized to handle from 1 to 24 hp
High-Precision Inline Strain Wave Gearboxes
Strain wave gearboxes offer many advantages over planetary and helical gearboxes. Strain wave technology allows for a higher gear ratio and efficiency in an inline form-factor and smaller size. Many different gear ratios and output shaft sizes are available and are designed to work without SureServo2 and SureStepper motors.
- High gear ratios compared to similar-sized planetary gearboxes (up to 160:1 for stepper gearboxes and 200:1 for servo gearboxes)
- Low heat and noise generation
- Large selection of output shaft diameters
- Lifetime zero backlash
- Pre-lubricated for life
Precision Gearboxes for Servomotors
The PGA series of inline planetary gearboxes has a thread-in mounting style, along with a level of precision and torque capacity that is best in its class. The PGB series of right-angle planetary gear reducers offers similar technical specifications to the PGA series and provides an excellent solution when space and clearance requirements are limited. PGD series gearboxes with compact design and hub-style output are ideal for equipment that requires high-speed, high-precision indexing movement. The LS Electric MSS series of high precision gear reducers are specifically designed to mate to LS Electric L7C and L7P series servo motors.
- Thread-in mounting style
- Best-in-class backlash
- A range of gear ratios available
- Uncaged needle roller bearings for high rigidity and torque
Precision Gearboxes for Small NEMA Motors
The SureGear PGCN series is a great gearbox value for servo, stepper, and other motion control applications requiring a NEMA size input/output interface. It offers the best quality available for the price point. Features include:
- Wide range of ratios (5, 10, 25, 50, and 100:1)
- Low backlash of 30 arc-min or less
- 20,000 hour service life
- Maintenance free; requires no additional lubrication
- NEMA sizes 17, 23, and 34
- Includes hardware for mounting to SureStep stepper motors
- Optional shaft bushings available for mounting to other motors
Helical Racks and Pinions
Rack and pinion systems are a type of linear actuator consisting of a rotating pinion that drives a linear rack, converting rotary motion to linear motion. Helical rack and pinion systems offer the most cost-effective installation for linear movements over 2 meters.
Linear Bearings and Rails
WON linear bearing guides and rails are available in three different series to meet the needs of your linear motion application. All guide/rail systems provide 4-direction equal load sharing in any direction for lower friction and smooth motion.
- Normal preload
- Moderate precision class
- Rail hardness: HRC58-64
- End seals included with all guides
- Made from stainless or carbon steel
Rotary Shafts
SureMotion hardened rotary shafts are precision ground for exceptional straightness, accurate diameters, and a surface finish of 10RMS.
- 303 Stainless Steel
- RB75-90 Hardness
- 10RMS Surface Finish
- 3" to 36" lengths
- 0.125" to 1.25" diameters
Grooved Rotary Shafts
Grooved rotary shafts support a variety of power transmission applications, primarily as drive shafts or axles for spinning equipment.
- 303 Stainless Steel
- Retaining ring grooved, groove spacing to fit typical bearings
- RB-83 Hardness
- 10RMS Surface Finish
- 3" to 12" lengths
- 0.250" to 1.000" diameters
Timing Belts, Timing Pulleys & Tapered Tapered Bushings
Timing pulleys, bushings, and belts allow speed and torque change while connecting mechanically rotating components.
- Timing (toothed) belts in MXL, XL, L, 5M, and 8M styles
- Timing pulleys in MXL, XL, and L styles
- Tapered bushings allow pulleys to connect to different shaft sizes
Drive Couplings
Drive couplings are used to couple the shafts of various mechanical devices and compensate for misalignment.
- Jaw / Spider Couplings
- Double Loop Couplings
- Oldham Couplings
- Beam-Style Servo Couplings
- High-gain servo couplings
Bore Reducers
For use in all SureMotion drive coupling hubs to reduce bore size.
- Split-collar design with 2 set screw flats will not mark shaft
- 25% greater holding power than standard split collar
- Hardened stainless steel
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