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DYNABLOC

Product catalog summary

Introduction
The Dynabloc geared servo motor range from Leroy-Somer combines reduced-backlash Dynabloc gearboxes with high-performance Unimotor servo motors, providing optimized solutions for various servo applications. The gearboxes are divided into Low Backlash and Standard Backlash categories.

General Information
Technical data for servomotors includes specifications such as nominal speed (2000 to 6000 rpm), power supply (380-480 V AC), and temperature rise class F. Torsional stiffness is essential for applications with high inertia loads to ensure stability during dynamic operations.

Selection Criteria
Key factors for selecting a gearbox include application type, load weight, duty cycle, linear speed, positioning accuracy, and environmental conditions. The selection process involves calculating resistive and acceleration torque, verifying inertia ratios, and ensuring permissible loads on the output shaft.

Servo Gearbox Selection
The catalogue details various Dynabloc gearbox types:

Pje Dynabloc: Economical planetary gearboxes with low backlash, suitable for continuous and pulse duty applications.
Pjr Dynabloc: Similar to Pje but with different torque and speed specifications.
Mjd Dynabloc: Right angle worm gearboxes for applications requiring specific torque and speed ratios.
Cb, Ot, Mb Dynabloc: Helical and bevel gearboxes with varying torque capacities and mounting options.

Technical Characteristics
Each gearbox type has specific technical characteristics, including torque ranges, efficiency, and lubrication requirements. Detailed tables and diagrams are provided for precise selection based on application needs.

Specifications
The motors feature solid shafts with keys, nominal speeds ranging from 2000 to 6000 rpm, and connectors rotatable by 90°. They can be equipped with incremental or absolute encoders and are available with or without brakes. The motors are universally mountable with servo coupling and are available in painted and unpainted finishes.

Gearbox Characteristics
The Pje Dynabloc Servo gearbox is noted for its low backlash, high torsional stiffness, and compact lightweight design. Various gearbox types are listed with specific ratios, efficiencies, torsional stiffness, angular backlash, and maximum radial and axial loads.

Motor and Gearbox Performance
Performance metrics are provided for various motor types and configurations, including nominal and peak torque, motor and gearbox inertia, exact ratios, output speeds, and duty factors. The document also includes acceleration torque and duty factor at acceleration for different configurations.

Ordering Information
The catalogue includes ordering code information for selecting the appropriate motor and gearbox configurations based on specific requirements.

Temperature and Safety
The maximum temperature on the housing should not exceed 90°C. If the acceleration torque factor (kacc) is less than 1, the acceleration torque must be reduced by limiting the current through the drive.

Procedures and Standards
The document outlines standard backlash applications for the Cb Dynabloc servo gearboxes, designed to reduce speed and increase torque of servo motors. It mentions the use of ISO VG220 mineral oil for lubrication and adherence to standards like NFE22-051 and ISO R 775 for output shaft tolerance.

Recommendations
For optimal performance, the document recommends using Unimotor fm motors for continuous duty applications with high inertia loads. It also suggests considering the duty factor and acceleration torque at the gearbox to ensure efficient operation.

Conclusion
The Dynabloc range offers versatile and high-performance solutions for servo applications, with detailed specifications and selection criteria to ensure optimal performance and integration into various systems.

Catalog excerpts

DYNABLOC Geared Servo Motors Technical Catalogue Low and standard backlash gearboxes for servo applications with Unimotor fm and Unimotor hd

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Dynabloc - High Performance Geared Servo Motors Torques Dynabloc Standard Backlash Dynabloc Geared Servo Motors - Technical Catalogue - 5409 en - 2018.07 / g

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Dynabloc - High Performance Geared Servo Motors Leroy-Somer reserves the right to modify the design, technical specifications and dimensions of the products shown in the document. The description cannot in any way be considered contractual. Dynabloc Geared Servo Motors - Technical Catalogue - 5409 en - 2018.07 / g 3

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Dynabloc - High Performance Geared Servo Motors Pje DYNABLOC (page 9) • In-line planetary gearbox Pjr DYNABLOC (page 24) »In-line planetary gearbox >r- ♦ i: 3 - 70 • SI Torque: 26 - 600 Nm U&l* S5 Torque: up to 1300 Nm »BS flange mounted »Solid shaft Mjd DYNABLOC (page 40) • Right angle worm gearbox •1:5.2-90 • SI Torque: 23 - 688 Nm !! ®* • S5 Torque: up to 1100 Nm • BT flange mounted • Solid or hollow shaft Cb DYNABLOC (page 54) • In-line helical gearbox w • i: 3 -101 - ""-S, • SI Torque: 16 -1590 Nm - • Foot or flange mounted • Solid shaft Ot DYNABLOC (page 70) • Right angle helical...

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Dynabloc - High Performance Geared Servo Motors The Dynabloc geared servo motor range from Leroy-Somer combines reduced-backlash Dynabloc gearboxes with high-performance Unimotor servo motors to provide optimized solutions for all servo applications. There are two families of Dynabloc gearbox: Dynabloc Low Backlash and Dynabloc Standard Backlash. Planetary Gearboxes Worm Gearbox Helical Gearbox Dynabloc Standard Backlash Helical Bevel Gearbox Worm Gearbox STD BACKLASH LOW BACKLASH Unimotor fm and hd Servo Motors High Dynamic Motor Pulse Duty Applications Flexible Motor Continuous Duty Applications...

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Dynabloc - High Performance Geared Servo Motors Temperature rise class F Ambiant temperature 40°C Power supply 380-480 V AC (230 V on request) Nominal speed 2000 to 6000 rpm The exact backlash for each gearbox type and ratio i is specified in § Technical characteristics. The torsional stiffness is the characteristic which indicates the torque in N.m which must be applied to the servo gearbox to deform it by an angle of one arcmin. The stiffness is indicated in N.m/arcmin. In the event of very severe applications combined with a high inertia of the load, it is advisable to choose a servo gearbox...

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Duty cycle diagram • Type of application • Weight of load to be moved • Duty cycle, see diagram below (example) • Linear speed --> Calculate the speed n2 at the gearbox output • Accuracy of positioning --> Calculate the angular backlash of the gearbox • Resistive and acceleration torque at output • Radial and axial load on output shaft • Ambient temperature • Height of installation Dynabloc Geared Servo Motors - Technical Catalogue - 5409 en - 2018.07 / g 7

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Dynabloc - High Performance Geared Servo Motors Selection criteria Selection flow chart Select the gearbox type (Pje, Pjr, Mjd, Ot, Cb, Mb) depending on the output (in-line or right angle) and the angular backlash required. Calculate the torque Mres applied on the output shaft Calculate the total torque Mres + Macc on the output shaft Select the gearbox in the selection tables in function of the requested torques and speed Verify that : kS1 x Mn red ≥ Mres Verify that : kacc x Macc red ≥ (Mres + Macc) x F1 x F2 Verify the ratio of the moments of inertia Jch/Jmot (load/motor) Verify the loads...

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• Low backlash • High torsional stiffness • Lightweight and compact • Unimotor fm or hd Pje Dynabloc servo gearboxes are designed to reduce the speed and increase the torque of servo motors and to optimize the ratio of inertia between the driven load and the motor. Pje Dynabloc gearboxes are the perfect economical solution for applications requiring low backlash and high torsional stiffness. Lightweight and compact, the gearboxes can be easily integrated into machines. Maintenance-free, they are supplied lubricated and are mulitpositional. Pje Dynabloc gearboxes are available with Unimotor fm...

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Dynabloc Low Backlash - High Performance Geared Servo Motors 10 Dynabloc Geared Servo Motors - Technical Catalogue - 5409 en - 2018.07 / g

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Dynabloc Low Backlash - High Performance Geared Servo Motors Pje Dynabloc Servo gearbox Mounting form - Operating position Mounting form Mounting with flange with tapped holes BT Operating position Mounting with flange with tapped holes BT Dynabloc Geared Servo Motors - Technical Catalogue - 5409 en - 2018.07 / g

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Dynabloc Low Backlash - High Performance Geared Servo Motors Pje Dynabloc Servo gearbox Ordering code information Operating position Gearbox type Exact ratio Motor input type Size / Number of stages Mounting form Backlash at output shaft Nominal speed* = Power and Signal 90° rotatable (J = pour moteur UD) (J = for Motor 142142) Feedback device See Servo Drives and Motors technical catalogue 0 = Without brake 5 = Parking brake Output shaft Size 055: A = With key Sizes 067 - 142: E = With half-key *For the full range of motor options, please refer to the Servo Drives and Motors Technical Catalogue...

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D+20 lead time (Ex Works) * If kacc < 1, the acceleration torque must be reduced by limiting the current through the drive. Dynabloc Geared Servo Motors - Technical Catalogue - 5409 en - 2018.07 / g 13

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Dynabloc Low Backlash - High Performance Geared Servo Motors Pje 0641 - 0642 Selection Motor speed 6000 rpm Pje 0641 MRed_S1 26 N.m max The maximum temperature on the housing must not exceed 90°C. * If kacc < 1, the acceleration torque must be reduced by limiting the current through the drive. 14 Dynabloc Geared Servo Motors - Technical Catalogue - 5409 en - 2018.07 / g

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Dynabloc Low Backlash - High Performance Geared Servo Motors LOW BACKLASH * If kacc < 1, the acceleration torque must be reduced by limiting the current through the drive. Dynabloc Geared Servo Motors - Technical Catalogue - 5409 en - 2018.07 / g 15

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