CLA, CLB series
CLA, CLB series
- Input Drive: Utilizes a worm gear with a precision helical wheel for high performance and low angular backlash, made from case-hardened steel and bronze.
- Housing: Constructed from aluminum alloy and grey cast iron, designed to handle heavy axial loads.
- Screws and Nuts: Features acme and ball screws made from steel and bronze for high accuracy and minimal backlash.
- Bearings and Attachments: Equipped with radial and angular contact ball bearings, offering various attachment options for flexibility.
- CLA Series (Acme Screw): Specifications include push rod and outer tube diameters, load capacities, ratios, linear travel per input shaft revolution, and mass specifications.
- CLB Series (Ball Screw): Similar specifications with additional details on ball screw dimensions, dynamic and static load capacities, and linear travel metrics.
- CLA Series: Performance data for AC 3-phase and 1-phase motors, detailing linear speed, dynamic load, motor power, and self-locking coefficients.
- CLB Series: Performance metrics for AC 3-phase motors, including linear speed, dynamic load, and motor specifications.
- Customizable motor mounting sides, terminal box positions, and actuator attachment orientations. Intermediate flange options are available.
- Input Configurations: Single or double input shafts, and attachments for IEC B14 electric motors with or without a second shaft.
- Accessories: Includes electric stroke end switches, rotary potentiometers, anti-turn devices, safety clutches, safety nuts, and protective bellows.
- Special Designs: Customizations such as stainless steel components, special lubricants, and seals for specific environmental conditions.
- Switch for Intermediate Position (FC3): Identifies intermediate positions of the push rod.
- Rotary Potentiometer (POR 5k): Provides an analog output signal proportional to the actuator's position.
- Anti-Turn Device (AR): Prevents rotation of the push rod, ensuring linear motion.
- Safety Clutch (FS): Protects the actuator from dynamic overloads by slipping when overload occurs.
- Safety Nut (MS): Acts as a backup to support the load if the main nut fails.
- Protective Bellows (B): Protects the actuator in harsh environments.
- Ensure correct connection of motor and limit switches and use the correct voltage.
- For linear actuators with brake motors, ensure the brake is engaged before starting the actuator.
- Alignment check: The load must align with the actuator; no offset or radial loads are allowed.
- Servomech s.p.a., Via Monaldo Calari, 1, 40011 Anzola Emilia (BOLOGNA), ITALY
- Phone: +39 051 6501711
- Fax: +39 051 734574
- Email: [email protected]
- Power supply: 0 V DC and + V DC
- Reference signals: ZERO and RETURN
- Color coding for connections: FC3: Brown, FC2: Yellow, FC1: Brown, FC3: Blue, FC2: Green, FC1: White
Catalog excerpts
Linear actuators CLA Series and CLB Series CLA-CLB Series, size 30 - 40 3 CLA-CLB Series, size 50
Open the catalog to page 1
Linear actuators CLA Series and CLB Series 3.1 MANUFACTURING FEATURES Input drive: worm gear - precision helical wheel, geometric design for high performance, involute profile ZI (UNI 4760 : Part 4), low angular backlash. Worm in case hardened steel 20 MnCr 5 (UNI EN 10084), with thread and input shafts ground. Helical wormwheel in bronze EN 1982 – CuSn12-C. Housing: designed and manufactured in monobloc form to obtain a compact body able to sustain heavy axial loads and high machining accuracy. High quality materials are used: ▪ castings in aluminium alloy EN 1706 AC-AlSi6Cu4 ▪ castings in grey...
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Linear actuators CLA Series 3.2 TECHNICAL DATA - acme screw linear actuators CLA Series SIZE Outer tube diameter Front attachment diameter Rear attachment diameter Attachment for IEC standard motor (flange and hollow shaft) Attachment for IEC standard motor (flange adapter + coupling) Max. dynamic load Max. static load Linear travel [mm] for 1 input shaft revolution 2-start acme screw RV2 Ratio Linear travel [mm] for 1 input shaft revolution Mass (actuator 100 mm stroke length, without motor, with lubricant) Extra-mass for each additional 100 mm stroke length
Open the catalog to page 3
Linear actuators CLB Series 3.2 TECHNICAL DATA - ball screw linear actuators CLB Series SIZE Outer tube diameter Front attachment diameter Rear attachment diameter Attachment for IEC standard motor (flange and hollow shaft) Attachment for IEC standard motor (flange adapter + coupling) Max. dynamic load Max. static load Diameter × Lead Ball Ball screw (STANDARD) Linear travel [mm] for 1 input shaft revolution Mass (actuator 100 mm stroke length, without motor, with lubricant) Extra-mass for each additional 100 mm stroke length ON REQUEST Ball screw (Diameter × Lead) Ball When these ball screws...
Open the catalog to page 4
Linear actuators CLA Series ACME SCREW LINEAR ACTUATORS CLA Series with AC 3-PHASE MOTOR PERFORMANCE with: Duty Cycle Fi = 30 % over 10 min at ambient temperature 25 °C LINEAR SPEED [mm/s] MOTOR: POWER [kW] — N° of POLES SPEED [rpm] SELF-LOCKING COEFFICIENT ACME SCREW LINEAR ACTUATORS CLA Series with AC 1-PHASE MOTOR PERFORMANCE with: Duty Cycle Fi = 30 % over 10 min at ambient temperature 25 °C LINEAR SPEED [mm/s] MOTOR: POWER [kW] — N° of POLES SPEED [rpm] SELF-LOCKING COEFFICIENT
Open the catalog to page 5
Linear actuators CLB Series BALL SCREW LINEAR ACTUATORS CLB Series with AC 3-PHASE MOTOR PERFORMANCE with: Duty Cycle Fi = 100 % at ambient temperature 25 °C LINEAR SPEED [mm/s] MOTOR: POWER [kW] — N° of POLES SPEED [rpm] SELF-LOCKING COEFFICIENT value limited by electric motor power; ball screw lifetime L10h > 1000 hours (see diagrams on pages 34 ... 35) The total dynamic efficiency (h) of CLB Series actuators, used to determine the dynamic load is calculated as follows: h = h 1 × h2 × h 3 where: h1 – wormgear dynamic efficiency, calculated according to BS 721 : Part 2 : 1983 h2 = 0.9 – ball...
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Linear actuators CLA Series 3.4 OVERALL DIMENSIONS ACME SCREW LINEAR ACTUATORS CLA Series, size 30 — 40 AC 3-phase or 1-phase MOTOR La = Lc + STROKE Lc = S + STROKE T + STROKE Stroke end switch cover ACME SCREW GREASE NIPPLE PIN FRONT ATTACHMENTS WITH BRAKE STANDARD HEAD with threaded bore BA Lc - RETRACTED actuator length La - EXTENDED actuator length
Open the catalog to page 7
Linear actuators CLA Series 3.4 OVERALL DIMENSIONS ACME SCREW LINEAR ACTUATORS CLA Series, size 30 — 40 AC 3-phase or 1-phase MOTOR STROKE CODE STROKE [mm] = STROKE CODE ACTUATOR with FC in STANDARD execution NOTE: Greater stroke lengths available on request. For stroke lengths longer than 800 mm it is necessary to increase the guided length between push rod and outer tube to avoid axial backlash. Dimensions S, T and Q shall be considered increased by 200 mm for stroke lengths up to 1500 mm. FRONT ATTACHMENT Dimensions a 65 80
Open the catalog to page 8
Linear actuators CLA Series 3.4 OVERALL DIMENSIONS ACME SCREW LINEAR ACTUATOR CLA 50 AC 3-phase MOTOR La = Lc + STROKE STROKE Lc = 367 + STROKE 288 + STROKE Stroke end switch cover 3 Lc - RETRACTED actuator length La - EXTENDED actuator length GUIDE BUSH GREASE NIPPLES ACME SCREW GREASE NIPPLES STANDARD HEAD with threaded bore BA HINGED HEAD TF FRONT ATTACHMENTS Flange + hollow shaft IEC B14 Adapter + coupling IEC B14 NOTE: For stroke lengths longer than 800 mm it is necessary to increase the guided length between push rod and outer tube to avoid axial backlash. The tube length and the dimensions...
Open the catalog to page 9
Linear actuators CLB Series 3.4 OVERALL DIMENSIONS BALL SCREW LINEAR ACTUATOR CLB 50 AC 3-phase MOTOR La = Lc + STROKE STROKE Lc = 446 + STROKE 372 + STROKE Stroke end switch cover 3 Lc - RETRACTED actuator length La - EXTENDED actuator length GUIDE BUSH GREASE NIPPLES ACME SCREW GREASE NIPPLES Flange + hollow shaft IEC B14 STANDARD HEAD with threaded bore BA HINGED HEAD TF FRONT ATTACHMENTS NOTE: For stroke lengths longer than 800 mm it is necessary to increase the guided length between push rod and outer tube to avoid axial backlash. The tube length and the dimensions Lc and La shall be considered...
Open the catalog to page 10
Linear actuators CLB Series 3.4 OVERALL DIMENSIONS BALL SCREW LINEAR ACTUATORS CLB Series, size 30 — 40 AC 3-phase MOTOR La = Lc + STROKE Lc = S + STROKE T + STROKE Stroke end switch cover BALL SCREW GREASE NIPPLE PIN FRONT ATTACHMENTS WITH BRAKE STANDARD HEAD with threaded bore BA Lc - RETRACTED actuator length La - EXTENDED actuator length
Open the catalog to page 11
Linear actuators CLB Series 3.4 OVERALL DIMENSIONS BALL SCREW LINEAR ACTUATORS CLB Series, size 30 — 40 AC 3-phase MOTOR STROKE CODE STROKE [mm] = STROKE CODE ACTUATOR with FC in STANDARD execution NOTE: Greater stroke lengths available on request. For stroke lengths longer than 800 mm it is necessary to increase the guided length between push rod and outer tube to avoid axial backlash. Dimensions S, T and Q shall be considered increased by 200 mm for stroke lengths up to 1500 mm. FRONT ATTACHMENT Dimensions a 65 80
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