---
title: "Elleuno Distributor of Leroy Somer  - Geared Servo Motors Leroy Somer Pjr Dynabloc"
description: "Leroy Somer servo gear motor. Pjr Dynabloc is a range of high performance servo motors for applications requiring low backlash"
url: "https://motorielettrici.elleuno.eu/en/geared-servo-motors-2/geared-servo-motors-leroy-somer-pjr-dynabloc.html"
date: "2026-09-22T16:31:51+00:00"
language: "en-GB"
---

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**All Leroy Somer electric motors. Sales, assistance, spare parts. Phone.+39 028131848 - email <info@elleuno.eu>**

LEROY SOMER ELECTRIC MOTORS

 ##  Geared Servo Motors Leroy Somer Pjr Dynabloc

   Details   Category: [Dynabloc Geared Servo Motors Leroy Somer](https://motorielettrici.elleuno.eu/en/geared-servo-motors-2.html)

#### ![pjr 200 200](https://motorielettrici.elleuno.eu/images/servo_motoriduttori/pjr_200_200.jpg)Backlash from 2 to 7 arcmin (Low backlash MEDIUM/EXPERT)

Ratios from 3 to 70 (one or two stages)

Pjr Dynabloc is a range of high-performance geared servo motors for applications requiring reduced backlash.

The planetary gearbox provides very low backlash and very high torsional stiffness. This guarantees motor stability even at dynamic operation with high inertia loads. Pjr Dynabloc also has a high overload capacity making it suitable for the most demanding applications. Lightweight and compact, the geared servo can be easily integrated into machines.

The Pjr Dynabloc range can be fitted with Unimotor hd or fm servo motors depending on the required application:

Unimotor hd - designed for pulse duty applications requiring high dynamics
Unimotor fm - ideal for continuous duty applications with high inertia loads

**Advantages**

- Very low backlash
- Very High torsional stiffness
- High overload capacity
- Motor speeds up to 6000 rpm
- High inertia option available with fm motor
- Lightweight and compact for easy integration into machines
- Multiple shafts and mounting positions for easy integration into machines
- Maintenance free
- Lubricated for life​
- Multipositional

**Main characteristics**

- Rated torque N.m 26 to 600
- Max acceleration torque N.m Up to 1300
- Gearbox ratio
- 1 stage: 3 to 10
- 2 stage: 12 to 70
- Backlash arcmin
- MEDIUM:
    1 stage: 4 to 6
    2 stage: 12 to 70
- EXPERT:
    1 stage: 2 to 4
    2 stage: 4 to 5
- Motor Unimotor hd or Unimotor fm
- Motor speed rpm 3000 or 6000
- Efficiency %
    - 1 stage: 96
    - 2 stage: 94
- Output shaft Solid shaft with key
- Mounting Flange with tapped holes (B14)

 | Download |
|---|
| [catalog![download pdf](https://motorielettrici.elleuno.eu/images/icone/pdf35.png)](https://motorielettrici.elleuno.eu/images/servo_motoriduttori/it/catalogo-servo-motoriduttori-5409h_en.pdf) |
| [manuals![download pdf](https://motorielettrici.elleuno.eu/images/icone/pdf35.png)](https://motorielettrici.elleuno.eu/images/servo_motoriduttori/en/pjr-5106b_fr-en-de.pdf) |

 [ Elleuno  Leroy Somer ](https://motorielettrici.elleuno.eu/ "Elleuno")

ELLEUNO srl Via Bari 24 20143 MILANO Italy - P.IVA: 06810830965 - Tel +39 028131848 - Fax: +39 02.89190444 [info@elleuno.eu ](mailto:info@elleuno.eu)

Select your language

- [ ![Italiano (it-IT)](https://motorielettrici.elleuno.eu/media/mod_languages/images/it_it.gif "Italiano (it-IT)") ](https://motorielettrici.elleuno.eu/it/servo-motoriduttori-leroy-somer/servo-motoriduttore-pjr-dynabloc.html)
- [ ![English (United Kingdom)](https://motorielettrici.elleuno.eu/media/mod_languages/images/en_gb.gif "English (United Kingdom)") ](https://motorielettrici.elleuno.eu/en/geared-servo-motors-2/geared-servo-motors-leroy-somer-pjr-dynabloc.html?markdown=1)

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