General Description
The motor {A} rotates the drive screw {B} by a synchronous timing belt drive,worm gear drive, or a coupling direct inline drive {C} connected from the motor shaft to the screw. The drive screw {B} is either an Acme,Vee or Ball, depending on the actuator model selected. The drive nut {D} is either Delrin AF, Bronze,or a ball nut, moves linearly along the screw. Thrust is transmitted from the drive nut, {D} to the translating tube {E}. The entire screw and nut assembly is protected from contamination and the environmental elements by the cover tube {F} and the end wiper seal {G}. Radial thrust bearings {H} allow the screw to freely rotate under loaded conditions. Some ACA actuators incorporate magnetic Reed Switches to protect the actuator from over travel in both extend and retract positions. All ACA actuator housings {I} are formed of aircraft-quality aluminum.

Thrust to 275 Lbs.
Synchronous timing belt and pulleys.
Stroke 12 inches in length. Speed to 20 inches / second
Motor 24 VDC, 90 VDC, Stepper, and Brushless Servo

General
The ACA1M series is a very versatile and durable actuator, and is designed primarily for lighter load applications.

Stroke length
The ACA1M is available in stroke lengths of whole and fractional numbers from 0-12 inches.

Gearing
ACA1M series has standard Aluminum pulleys, with 1/5 pitch and ratios 1:1 and 2:1 for longer life and heavier loads. The letter {T} represents a timing belt.

Drive Screws
The ACA1M series incorporates 3 types of leadscrews: Ball {B} Acme {A} and Vee {V}

Motors
ACA offers a wide selection of motors, 24,90 VDC, Brushless servos and stepper motors. We can also mount your motor choice { at no charge.}

Options mounting
Standard Block Clevis {BC}, Threaded Stud {TS}, Bearing Rod Clevis {BRC}, Nose Mount {NM} Welded Flange {FL front}, Rear mounting foot {FM}

Options electrical
Electromechanical fail-safe brake 24,48 and 90VDC power on releases, power off holds {BR} Keyed tube {Antirotation} Standard. Magnetic reed switch {MS}. Optical Encoder {EN}

ACA1A- Actuator Series

Thrust to 500 Lbs.
Synchronous timing belt and pulleys.
Stroke 30 inches in length. Speed to 15 inches / second
Motor 24 VDC, 90 VDC, Stepper, and Brushless Servo

General
The ACA1A series is a very versatile and durable actuator for continuous and intermittent duty applications.

Stroke length
The ACA1A is available in stroke lengths of whole and fractional numbers from 0-30 inches.

Gearing
ACA1A series has standard Aluminum pulleys, with 1/5 pitch and ratios 1:1 and 2:1 for longer life and heavier loads. The letter {T} represents a timing belt.

Drive Screws
The ACA1A series incorporates 3 types of leadscrews: Ball {B} Acme {A} and Vee {V}

Motors
ACA offers a wide selection of motors, 24,90 VDC, Brushless servos and stepper motors. We can also mount your motor choice { at no charge.}

Options mounting
Standard Block Clevis {BC}, Threaded Stud {TS}, Bearing Rod Clevis {BRC}, Nose Mount {NM} Welded Flange {FL front}, Rear mounting foot {FM}

Options electrical
Electromechanical fail-safe brake 24,48 and 90VDC power on releases, power off holds {BR} Keyed tube {Antirotation} Standard. Magnetic reed switch {MS}. Optical Encoder {EN}

Thrust to 700 Lbs. Heavy duty actuator series.
Synchronous timing belt and pulleys.
Stroke 40 inches in length. Speed to 30 inches / second
Motor 24 VDC, 90 VDC, Stepper, and Brushless Servo

General
The ACA2A series is similar to the ACA1A series, although its physical dimensions are larger and its thrust capability more powerful.

Stroke length
The ACA2A is available in stroke lengths of whole and fractional numbers from 0-40 inches.

Gearing
ACA2A series has standard Steel pulleys, with 3/8 pitch and ratios 1:1 and 2:1 for longer life and heavier loads. The letter {T} represents a timing belt.

Drive Screws
The ACA2A series incorporates 3 types of leadscrews: Ball {B} Acme {A} and Vee {V}

Motors
ACA offers a wide selection of motors, 24,90 VDC, Brushless servos and stepper motors. We can also mount your motor choice { at no charge.}

Options mounting
Standard Block Clevis {BC}, Threaded Stud {TS}, Bearing Rod Clevis {BRC}, Nose Mount {NM} Welded Flange {FL front}, Rear mounting foot {FM}

Options electrical
Electromechanical fail-safe brake 24,48 and 90VDC power on releases, power off holds {BR} Keyed tube {Antirotation} Standard. Magnetic reed switch {MS}. Optical Encoder {EN}

Thrust to 2500 Lbs. Top of the line, heavy duty actuat or series.
Synchronous timing belt and pulleys.
Stroke to 40 inches in length. Speed to 10 inches per second.

General
The ACA3B series is designed like a {workhorse}, It is ideal for heavy loads, extreme duty cycles, at variable speeds.

Stroke length
The ACA3B is available in stroke lengths of whole and fractional numbers from 0-40 inches.

Gearing
The ACA3B series has standard heavy duty steel pulleys and ratios 1:1 and 2:1 for longer life and heavier loads. The letter {T} represents a timing belt.

Drive Screws
The ACA3B Series incorporates 2 types of lead screws ¾" Diameter {ball and Vee}

Motors
ACA offers a wide selection of motors, 24 and 90 VDC. Brushless servos and stepper motors. We can also mount your motor choice { at no charge.}

Options Mounting
Standard Block Clevis {BC}, Threaded Stud {ST}, Bearing Rod Clevis {BRC} Welded Flange {Front FL}, Rear mounting foot {FM}

Option electrical
Electromechanical fail safe brake 24,48 and 90 VDC power on releases, power off holds {BR}. Magnetic reed switch {MS}, Optical Encoder digital or analog {D/A EN}

Inline series {coupling, direct drive }
Thrust to 125 Lbs.
Speeds to 40 inches per second
Stroke to 10 inches in length

General
The ACA1DD series is an inline actuator which eliminates gearing. The motor is directly coupled to the drive screw. The ACA1DD series is used in low to zero backlash and high resolution applications.

Stroke length
The ACA1DD is available in stroke lengths of whole and fractional numbers from 0-10 inches.

Gearing
The ACA1DD series has a standard gearing ratio 1:1. We use zero backlash couplings on all are applications for this series.

Drive Screws
The ACA1DD Series incorporates 3 types of lead screw {B} ball, {A} acme, and {V} Vee.

Motors
ACA offers a wide selection of motors, 24, 90 VDC. Brushless servos and stepper motors. We can also mount your motor choice {at no charge }.

Options mounting
Standard Block Clevis{front end on the translating tube} and Trunnion shoulder bolts {2ea. Rear on the coupling housing} are supplied. Add on components, Bearing Rod Clevis {BRC}, Threaded Stud {TS}, Foot Mount {FM}, Welded flange {FLM}.

Options electrical
Electromechanical fail safe Brake, 24, 90 VDC power on releases, power off holds{BR} Magnetic reed switch {MS}, Optical Encoder digital or analog {D/A EN}

Inline series {coupling, direct drive }
Thrust to 200 Lbs.
Speeds to 25 inches per second
Stroke to 30 inches in length

General
The ACA2DD series is an inline actuator which eliminates gearing. The motor is directly coupled to the drive screw. The ACA2DD series is used in low to zero backlash and high resolution applications.

Stroke length
The ACA2DD is available in stroke lengths of whole and fractional numbers from 0-10 inches.

Gearing The ACA2DD series has a standard gearing ratio 1:1. We use zero backlash couplings on all are applications for this series.

Drive Screws The ACA2DD Series incorporates 3 types of lead screw {B} ball, {A} acme, and {V} Vee.

Motors ACA offers a wide selection of motors, 24, 90 VDC. Brushless servos and stepper motors. We can also mount your motor choice {at no charge }.

Options Mounting Standard Block Clevis {front end on the translating tube} and Trunnion shoulder bolts {2ea. Rear on the coupling housing} are supplied. Add on components, Bearing Rod Clevis {BRC}, Threaded Stud {TS}, Foot Mount {FM}, Welded flange {FLM}.

Options electrical
Electromechanical fail safe Brake, 24, 90 VDC power on releases, power off holds {BR} Magnetic reed switch {MS}, Optical Encoder digital or analog {D/A EN}

Top Page

Inline series {coupling, direct drive }
Thrust to 600 Lbs.
Speeds to 35 inches per second
Stroke to 30 inches in length

General
The ACA3DD series is an inline actuator which eliminates gearing. The motor is directly coupled to the drive screw. The ACA3DD series is used in low to zero backlash and high resolution applications. The ACA3DD can be coupled to a 34-frame size motor.

Stroke length
The ACA3DD is available in stroke lengths of whole and fractional numbers from 0-10 inches.

Gearing
The ACA3DD series has a standard gearing ratio 1:1. We use zero backlash couplings on all are applications for this series.

Drive Screws
The ACA3DD Series incorporates 3 types of lead screw {B} ball, {A} acme, and {V} Vee.

Motors
ACA offers a wide selection of motors, 24, 90 VDC. Brushless servos and stepper motors. We can also mount your motor choice {at no charge }.

Options Mounting
Standard Block Clevis{front end on the translating tube} and Trunnion shoulder bolts {2ea. Rear on the coupling housing} are supplied. Add on components, Bearing Rod Clevis {BRC}, Threaded Stud {TS}, Foot Mount {FM}, Welded flange {FLM}.

Options electrical
Electromechanical fail safe Brake, 24, 90 VDC power on releases, power off holds {BR} Magnetic reed switch {MS}, Optical Encoder digital or analog {D/A EN}

Thrust to 600 Lbs.
Worm Gear Drive
Stroke 10 inches in length. Speed to 1 inch per second
Motor 12 VDC, 24 VDC, 90 VDC, Stepper

General
The ACA1J series is a right angle worm gear drive Ball Screw Actuator, versatile and durable. Applications requiring a small , lightweight and high thrust actuator.

Stroke length
The ACA1J is available in stroke lengths of whole and fractional numbers from 0-10 inches.

Gearing
ACA1J series has standard ground and polished worm threads and ratios 10:1 / 20:1 / 5:1 for longer life and heavier loads. The letter {W} represents a Worm Gear.

Drive Screws
The ACA1J series incorporates 1 type of leadscrews: Ball {B} .118" Lead and .125" Lead

Motors
ACA offers a wide selection of motors, 12,24,90 VDC, and stepper motors. We can also mount your motor choice { at no charge.}

Options Mounting
Standard Block Clevis {BC}, Threaded Stud {TS}, Bearing Rod Clevis {BRC}, Nose Mount {NM} Welded Flange {FL front}, Rear mounting foot {FM}

Options electrical
Electromechanical fail-safe brake 24,48 and 90VDC power on releases, power off holds {BR} Keyed tube {Antirotation} Standard. Magnetic reed switch {MS}. Optical Encoder {EN}

Thrust to 1500 Lbs.
Worm Gear Drive
Stroke 40 inches in length. Speed to 2 inches per second
12 VDC, 24 VDC, 90 VDC, Stepper

General
The ACA2J series is a right angle worm gear drive Ball Screw Actuator, versatile and durable. Applications requiring high thrust, and continuous duty operation.

Stroke length
The ACA2J is available in stroke lengths of whole and fractional numbers from 0-10 inches.

Gearing
ACA2J series has standard ground and polished worm threads and ratios 10:1 / 20:1 40:1 for longer life and heavier loads. The letter {W} represents a worm gear

Drive Screws
The ACA2J series incorporates 1 Type of leadscrews: Ball {B} .5" lead and .2" lead.

Motors
ACA offers a wide selection of motors, 12, 24, 90 VDC, and stepper motors. We can also mount your choice { at no charge.}

Options Mounting
Standard threaded stud at both ends. Add on options includes {BC} Block Clevis, {BRC} Bearing Rod Clevis, {FLM} Welded Flange Mount Front, {FM} Rear Mounting Foot.

Options electrical
Electromechanical fail-safe brake 24,48,90 VDC, power on releases, power on holds {BR}. Magnetic reed switch {MS}. Optical Encoder {EN}

Back

     ACA uses the highest quality of materials, components and processes in manufacturing electro-mechanical linear actuators of the highest quality for dependability and longevity. ACA offers innovative thinking for design and development on your needs and your customer needs. We always devote our full engineering capabilities {Engineers, Pro-E and Cad design} to meet your goals, and your customers with full factory warranties.

ACA offers engineering design of the most advanced software.
 

• (2) Pro/Engineer v 19.0, 3-D Modeling package
• (2) AutoCAD v14.0, 2-D Drawing package
• Pro/Manufacture v19.0, 3-D CNC Programming package
• MasterCAM v7.0, 3-D CNC Programming package

Standard Features {all actuator components are replaceable}

Rugged and lightweight, industrial durable, non-corrosive

A} Black anodized on all aluminum parts
B} Stainless steel hardware
C} 304/303 Stainless steel Translating Tube
D} Modular design allows quick and easy disassembly and reassembly
E} Shielded or sealed ball bearings
F} 100% duty cycle gearing.
G} Motors and controls are of the highest quality, for industrial use.
     For tough environments ACA can coat the motors with a special shielding.
H} Mechanical: Warner & Kerk Ball, Acme and Vee screws and Nuts.

Applications
 

ACA electromechanical linear actuators have been used in the following applications:

Liquid pumping Medical Automobile Aircraft Military

Door openers / closing Packaging Conveying Antenna Positioning Factory Automation

Installation, maintenance, temperature, service, and load direction
 

ACA actuators are shipped complete with instructions for installation, wiring, operation and maintenance.
Operating temperature -20° to +150° Fahrenheit.
ACA stocks all components for repairs, and rebuilds. Lead-time is 1 to 5 days.
ACA products may be safely and efficiently operated either in tension loading or compression loading.

General Description
The lead screws used in ACA actuators are rolled screws with lead accuracy of +/- .003^² to +/- .005^² inch per foot of screw. Ground screws are available for a higher price. The ground screw lead error is +/- 0.0005^² inch per foot of length, non- accumulative.

Lubrication is applied at the factory, with proper screw lubricants for the life of a particular actuator, {Ball, Acme, or Vee type}. ACA will lubricate for special applications as needed. i.e., extremely high or low temperatures or for vacuum operation.

Materials used throughout this catalog are as follows. {Acme, Vee 303 stainless steel} Ball screws are 1018 steel, hardened to RC65.

Designation of 3 screw types Acme{A} Vee{V} Ball{B} The number following the letter is the screw lead. Example V.05 is .050^² lead = 20 pitch.

Pitch, this designates the number of threads per inch of screw, Example V.05 is a vee thread form with 20 threads per linear inch.

Screw Lead is the linear distance the screw drive nut will move for each revolution of the screw V.05 = 0.050^² inch / revolution = 1.0^² inch / 20 threads.

Efficiency (e) the screw efficiency is determined by measuring the torque required to rotate the screw in order for the drive nut to lift a known load.
 

Screw Linear Velocity, all screw types are limited as to the speed to which a screw may be rotated. At a particular speed for a particular screw , the {critical velocity} of the screw will be reached, causing the screw to whip and vibrate, thereby becoming unstable and unusable. This critical velocity is a result of screw rotation speed, screw diameter, and screw length.

Drive Nuts
 

Ball Nuts: ACA Ball Nuts utilize high quality steel ball nuts with recirculating steel balls for long life and heavy loads.

Delrin AF Nuts are used in Acme and Vee screw types, for actuator loads under 500 lbs. Some advantages of this nut are its quiet running and low friction operation.

Bronze Nuts are used in Acme screws in applications where thrust requirements exceed 500 Lbs. Its main advantage is its heavy load capability.

Drive Nut Types

Vee Nuts    Delrin AF {Delrin AF nuts are made from Delrin and Teflon combination}
Acme Nuts Delrin AF and Bronze nuts {Bronze nuts are made from SAE 660 bearing bronze}
Ball Nuts     4140 carbon steel, case hardened

Lubrication

ACA offers a full compliment of lubricants including low-pressure greases for clean room and vacuum applications.

Grease
Dow Corning {Mill spec 810} Silicon grease NLGI medium use primarily in Low temperatures

-73°c +204°c

Orange 790 {ASTM} Multi-purpose, Food grade grease

-60°F +400°F

Magnalube-G {Teflon Base}

-40°F +530°F

ACA actuators are driven by three types of gear reduction

1. Synchronous timing belts and pulleys
2. Worm gear drives
3. Inline {coupling} drive no gear reduction.

All gearing has a specific designation

1. {T} represents a timing belt drive
2. {W} represents a worm gear or {right angle} drive
3. {In} Represents direct drive {1:1 ratio}

Ratios are described by the number following the letter {representing the type of gearing}
Example T2 = timing belt {2:1 ratio} In = direct drive {1:1 ratio} W20 = worm gear {20:1 ratio}

The advantages of Synchronous timing belt and pulleys

1. Long life
2. Low backlash
3. No lubricating required
4. Quiet running
5. High efficiency 90% +

The advantages of worm gear (right angle) drives

1. High ratio in a small space
2. High loading capability { however,the gear efficiency is low 50%.}
3. Worm drive available 5:1 10:1 20:1 40:1
4. 40:1 ratio with a ball screw will not backdrive under load

The advantages of Inline drive (1:1 coupling)

1. Zero-backlash
2. Long life
3. No Gear Noise
4. Highest efficiency

Complete model Number {example}

ACA1A-B5-T2-90D3-10-BC-EN