REXROTH IndraDyn S MSK Synchronous Motors

The REXROTH IndraDyn S MSK series synchronous servo motor is a high-performance motor that covers 12 machine base numbers from MSK030 to MSK133 and 4 machine base lengths from B to E. It has a continuous torque of 0.4~293 Nm, a maximum speed of 2000~9000 min ⁻¹, a protection level of IP65, an insulation level of F (155 ℃), and comes standard with Hiperface/EnDat2.1 encoder (single/multi turn optional). It can be configured with manual brake, fan unit, liquid cooling, etc. It is suitable for industrial scenarios such as machine tools, printing, and robots, and must comply with standards such as EN 60034. Only professional personnel are allowed to install and debug it.

Product Overview

Core positioning: The MSK series is a high-performance synchronous servo motor launched by Bosch Rexroth, belonging to the IndraDyn S product line, designed specifically for industrial automation scenarios. Through multiple specifications and configurations, it meets the precise driving needs from low power to high power.

Product series division

|Machine base number | Machine base length | Core parameter range (60K working condition) | Typical application scenarios|

|MSK030~050 | B/C | Continuous torque 0.4~5.5Nm, speed 4300~9000min ⁻¹ | Small machine tools, light load equipment|

|MSK060~076 | B/C/D/E | Continuous torque of 3.5~31.5Nm, speed of 3100~7500min ⁻¹ | Printing and packaging machines|

|MSK100~103 | A/B/C/D/E | Continuous torque 15~57Nm, speed 2000~6000min ⁻¹ | Metal forming machine, robot|

|MSK131~133 | B/D/E | Continuous torque 85~293Nm, speed 3000~3300min ⁻¹ | Heavy duty machine tools and large equipment|

Core strengths

Wide performance coverage: continuous torque of 0.4~293Nm, maximum speed of 9000min ⁻¹, adaptable to different load requirements.

Flexible configuration: Encoders, brakes, and cooling methods can all be customized to meet special scenario requirements.

Accuracy and reliability: The encoder resolution can reach up to 4294967296, with a vibration level of Class A and a long bearing life.

Safety compliance: Supports explosion-proof design, complies with international certifications such as CE and cURus, and follows multiple industrial standards.

Key technical parameters

(1) Core performance parameters (representative models)

Model: Machine base length, continuous torque (60K), maximum speed, moment of inertia (kg · m ²), weight (kg), brake torque (Nm)

MSK030B-0900 B 0.4 Nm 9000 min ⁻¹ 0.00001 1.3 (1.6 with brake) 1.0

MSK070E-0150 E 23.0 Nm 2200 min ⁻¹ 0.00458 16.2 (17.8 with brake) 23.0

MSK100D-0200 D 57.0 Nm 2000 min ⁻¹ 0.03500 56.0 (59.8 with brake) 70.0

MSK133E-0202 E 293.0 Nm 3300 min⁻¹ 0.09000 146.0 –

(2) Classification parameter details

Electrical parameters

Power supply: three-phase AC (compatible with IndraDrive controller), winding resistance 0.06~14.7 Ω (20 ℃), inductance 1.6~76.4mH.

Encoder: Supports Hiperface (S1/S3/M1/M3) and EnDat2.1 (S2/M2) interfaces, with a single cycle signal period of 16~2048 and multiple cycles capable of distinguishing 4096 revolutions per minute.

Brake: 24VDC electric release type, connection time 10~130ms, disconnection time 28~300ms, brake torque 1.0~240Nm.

mechanical parameters

Shaft type: Optical axis with central thread (DIN 332 Part 2), keyway shaft (DIN 6885), key specifications 3 × 3 × 16~14 × 10 × 80.

Rotational inertia: 0.00001~0.09 kg · m ², with additional brake inertia (0.00001~0.0188 kg · m ²) required for the brake.

Weight: 1.3~146kg, with random seat numbers and configurations increasing.

Environmental and Protection Parameters

Protection level: IP65 (compliant with EN 60034-5), preventing dust and water from entering.

Temperature range: working temperature 0~40 ℃, storage temperature -20~80 ℃, maximum winding temperature 155 ℃ (F-class insulation).

Anti environmental interference: anti vibration 10g (10-2000Hz), anti impact 30g (6ms), vibration level A (EN 60034-14).

Core configuration options

Encoder configuration | Encoder type | Interface | Resolution characteristics | Applicable scenarios|

|S1 (single loop) | Hiperface | 128 signal period, system accuracy ± 120 arcseconds | conventional accuracy control|

|S2 (single loop) | EnDat2.1 | 2048 signal cycle, system accuracy ± 20 arcseconds | high-precision positioning scene|

|S3 (single loop) | Hiperface | 16 signal cycles, capacitive design | harsh environment (anti pollution)|

|M1 (multi cycle) | Hiperface | 128 signal cycle+4096 revolutions | Long stroke absolute positioning | | M2 (multi cycle) | EnDat2.1 | 2048 signal cycle+4096 revolutions | High precision long stroke positioning|

|M3 (multi turn) | Hiperface | 16 signal cycles+4096 revolutions per minute | Long range positioning in harsh environments|

Cooling method configuration | Cooling type | Code | Core features | Applicable scenarios|

|Natural convection | NN | No additional components, compact structure | Low power, intermittent operation|

|Axial fan | SA | Axial blowing, air volume 350m ³/h, IP65 protection | Medium power, continuous operation|

|Radial fan | RB | Radial blowing, suitable for short machine base models | Continuous operation scenarios with limited space|

|Liquid cooling | FN | Cooling liquid 10~40 ℃, pressure loss ≤ 1.0 bar | High power, high temperature environment|

Brake configuration | Brake code | Brake torque | Core parameters | Applicable scenarios|

|0 | – | No holding brake | Horizontal axis, no risk of falling|

|1 | 1~33Nm | Connection time 10~70ms, disconnection time 28~270ms | Light load anti fall|

|2 | 30~70Nm | Connection time 40~130ms, disconnection time 97~300ms | Medium load anti fall|

|3 | 120~240Nm | Connection time 60~80ms, disconnection time 120~150ms | Heavy load anti fall|

Order Code Rules (Core Fields)

The ordering code consists of multiple fields, and the core field meanings are as follows (taking MSK050B-0300-NN-S1-UG1-NNNN as an example):

Example Value Explanation of Field Position Meaning

1-3 Product Series MSK Fixed Identification

4-6 seat number 050 corresponds to torque and installation dimensions

The longer the length of the base B, the greater the torque

8-11 winding (rated speed) 0300 corresponds to different winding parameters and rated speeds

12-13 cooling method NN natural convection (other: SA/FN)

14-15 Encoder Type S1 Single Loop Hiperface (Other: S2/M1, etc.)

16-17 electrical connection+axis type UG U=rotary connector, G=optical axis

18 brake 1 1=with 1Nm brake (0=no brake)

19-22 Design Type NNNN Standard Design (Other: NSNN=Explosion proof)

Installation and operation specifications

Installation requirements

Installation form: Supports B5 flange installation (IM B5) and foot mount installation, allowing for multiple installation positions (V1/V3, etc.).

Mechanical fixation: Use installation screws that meet the specifications and match the torque according to the model (such as M4 screws for MSK030, with a torque of 3.1Nm).

Axial load limit: The maximum radial load is 500-5000N, and the axial load is 0.34-0.59 times the radial load. Overloading should be avoided.

Wiring specifications

Protective grounding: The cross-section of the protective conductor (PE) must meet the requirements, and when the phase line is ≤ 16mm ², the PE cross-section should be consistent with the phase line; When the area is 25-50mm ², the PE is 25mm ²; >At 50mm ², PE is half of the phase line.

Cable selection: Power cable section ≥ 0.75mm ², encoder cable needs to be shielded and wired separately from power cable (spacing ≥ 10cm).

Explosion proof model requirements: Explosion proof models (NSNN/RSNN) require the use of explosion-proof accessories, and non explosion proof cables and connectors are prohibited.

Debugging and maintenance

Debugging prerequisite: Only personnel with professional qualifications are allowed to operate, and wiring, parameter configuration, and safety devices need to be checked before starting.

Daily maintenance: Regularly clean the surface of the motor with a dry cloth and remove dust from the heat dissipation area; Bearings are maintenance free and do not require the addition of lubricating grease.

Battery replacement: The multi turn encoder battery needs to be replaced when the device is loaded and the control voltage is turned on to avoid absolute position loss. The battery life is about 10 years.

Fault handling: When abnormal vibration or high temperature occurs, the machine should be stopped for inspection and operation with faults is prohibited.

Accessories and Services

core components

Fan unit: LEM series, divided into axial (AB) and radial (RB), suitable for different machine base sizes, protection level IP65, with thermal protection.

Gearbox: Planetary gearbox series, IP65 protection, lifetime lubrication, compatible with MSK full range motors.

Special cables: power cables, encoder cables, with shielding layer, with a maximum length of 40m.

Service Support

Technical documentation: Provides compliance statements, standard lists, installation manuals, debugging guides, etc., which can be downloaded from the Bosch Rexroth official website.

Certification support: The product complies with CE, cURus and other certifications, and corresponding certification documents are provided.

After sales maintenance: supports fault diagnosis, parts replacement, motor repair and other services.