MARAT Group specializes in the field of manufacture, assembly, renovation and modernization of industrial gearboxes. We provide almost all types of industrial gearboxes for a host of applications and industrial segments.

Types of gearboxes:

  • Bevel Gearbox
  • Planetary Gearbox
  • Helical Gearbox
  • Spur Gearbox
  • Worm Gearbox
  • Parallel and right angle shaft gearboxes
  • Other custom-made gearboxes

Typical industries served by Marat gearboxes:

  • Mining
  • Rolling Mills
  • Presses
  • Conveying systems
  • Cranes
  • Slewing Drives
  • Packaging
  • Power Plants
  • Food and labelling
  • Oil industry

Mining gearboxes for scraper conveyors

Below the offer range, we invite you to familiarize yourself with transmission models produced by our company.

MPL-15
Transmission ratio Nominal power
(kW)		 Torque
M		 Rotation speed ​​n
(min -1)(RPM)
21: 1 250 1630 70.2
25: 1 250 1630 59.6
28: 1 250 1630 52.3
33: 1 250 1630 44.0
39: 1 200 1300 37.4

 

MPL-25
Transmission ratio Nominal power
(kW)		 Torque
M		 Rotation speed ​​n
(min -1)(RPM)
16: 1 450 3000 91.5
21: 1 450 3000 70.2
25: 1 450 3000 52.3
33: 1 450 3000 44.0
39: 1 400 2600 37.5
MPL-35
Transmission ratio Nominal power
(kW)		 Torque
Mwej		 Rotational speed (min-1)
(RPM)
33:1 615 4000 44,0
39:1 615 4000 37,4

 

MKPL-15
Transmission ratio Nominal power
(kW)		 Torque
M		 Rotation speed ​​n
(min -1)(RPM)
21: 1 250 1630 70.2
25: 1 250 1630 59.6
28: 1 250 1630 52.3
33: 1 450 1630 44.0
39: 1 200 1300 37.4

 

MKPL-25
Transmission ratio Nominal power
(kW)		 Torque
M		 Rotation speed ​​n
(min -1)(RPM)
21: 1 450 3000 70.2
25: 1 450 3000 59.6
28: 1 450 3000 52.3
33: 1 450 3000 44.0
39: 1 400 2600 37.4

 

 

MKPL-35
Transmission ratio Nominal power
(kW)		 Torque
Mwej		 Rotational speed (min-1)
(RPM)
33:1 615 4000 44,0
39:1 615 4000 37,4

 

Mining gearboxes for belt conveyors

MKPL-15
Transmission ratio Nominal power
(kW)		 Torque
M		 Rotation speed ​​n
(min -1)(RPM)
21: 1 250 1630 70.2
25: 1 250 1630 59.6
28: 1 250 1630 52.3
33: 1 250 1630 44.0
39: 1 200 1300 37.4

 

MKPL-25
Transmission ratio Nominal power
(kW)		 Torque
M		 Rotation speed ​​n
(min -1)(RPM)
21: 1 450 3000 70.2
25: 1 450 3000 59.6
28: 1 450 3000 52.3
33: 1 450 3000 44.0
39: 1 400 2600 37.4

 

 

MKPL-35
Transmission ratio Nominal power
(kW)		 Torque
Mwej		 Rotational speed (min-1)
(RPM)
33:1 615 4000 44,0
39:1 615 4000 37,4

 

MG-1000
Transmitted power output (KM) 55/75/90/132/160
Range of transmission ratios (i) 12,68 – 32,5
Output rotation speed (RPM) 44,6 – 93,7
Gearbox weight (kg) 1017 – 1090

 

These gearboxes are specially designed for a drive of belt conveyors and other rotating equipment. The high level of accuracy of the gears and housing allows for silent, steady and reliable operation of the gearbox. Required gear arrangement is obtained by rotating the gear about 180 ° around the axis of the output shaft. The gearbox can operate both in direction of rotation and longitudinal inclination of ± 6 °

 

MK-250
Transmitted power (kW) 250
Motor intput speed (1/min) 1470
Transmission ratio range 19:1 / 25:1 / 32:1
Gearbox weight (kg) 2600

The gearboxes are dedicated for heavy-duty belt conveyors with transferred power up to 250 kW at nominal speed of 1470 r.p.m

 

Industrial gearboxes and gear motors

A complete range of multipurpose industrial gear motors and gearboxes for light as well as heavy-duty industrial applications.

Planetary

User Benefits

  • Manufactured with the state-of-the-art technology
  • Perfect in demanding applications with frequent overloads
  • Excellent ratio between the size and weight of the gearbox and the output torque
  • Extremely reliable and shock resistant
  • Ease of installation in any industrial application
  • Increased bearing life
  • Reduced costs
  • The first change of oil required only after 12,500 hours
  • VITON input shaft seal
  • Safe in transport

 

Technical parameters

Size 20 available sizes 001 – 710
Torque M2max ≤ 1.120.000 Nm
Rated torque MN2 1000 – 710.000 Nm

 

Range of Solutions

Available gear
  • 3 – 3000 (coaxial gearbox)
  • 9 – 2500 (bevel gearbox)
Available input options
  • Solid shaft
  • Universal flange connection
  • Connection and adapters for electric motors in IEC and NEMA standards as well as for hydraulic and pneumatic motors
Available output options
  • Solid shaft
  • External and internal splined shafts
  • Hollow shaft with clamping ring
  • Hollow shaft with keyway
  • Flanges
  • Additional output options interchangeable with products of major competitors
Optional Accessories
  • Backstop
  • External cooling module
  • Cooling fan
  • Torque arm
  • Splined sleeves
  • Splined shaft duplex
  • A gear wheel mounted on the output shaft
Mounting methods
  • Foot mounting
  • Flange mounting
  • Mounting on the shaft
  • Universal
Worm gear reducers

Worm gear reducers and gear motors of A04 series are characterized with high efficiency, running precision, regular motion and noiselessness, constant performance, life and reliability, strength and overload withstanding and suitability for heaviest applications, wide size and ratio range, and excellent service.

User benefits:

  • Universal mounting having feet integral with casing on 3 faces (sizes 32 .. 81) or on 2 faces (sizes 100 … 250) and B14 flange on 2 faces. Design and strength of the casing permit interesting shaft mounting solutions
  • Thickened size and performance gradation
  • High, reliable and tested performances (Ni bronze); optimization of worm gear pair performances (ZI involute profile and adequately conjugate worm wheel profile)
  • Compactness, standardized dimensions and compliance with standards
  • Motor standardized to IEC
  • Rigid and precise cast iron monolithic casing
  • Generous internal space between train of gears and casing allowing for:
  • High oil capacity
  • Lower oil pollution
  • Greater duration of worm wheel and worm bearings
  • Lower running temperature
  • Possibility of fitting particularly powerful motors and transmitting high nominal and maximum torques
  • Improved and upgraded modular construction both for component parts and assembled product which ensures manufacturing and product management flexibility
  • High manufacturing quality standard
  • Possibility of obtaining multiple drives and at synchronous speed
  • Wide design and accessory availability: shaft-mounting arrangements, mixed keying systems with key and locking elements (rings for sizes 32 … 50, bush for sizes 63 … 250), square flanges for servomotors and hub clamp, reduced backlash, etc.
  • Reduced maintenance costs
Coaxial gear reducers

Main features:

  • Universal mounting design
  • Strong patented casing
  • Wide size range
  • Rigid and precise cast iron monolithic casing
  • Pinion of final stage with three bearings
  • Compliant with ATEX 94/9/EC directive

Main benefits and advantages:

  • Rigid and precise cast iron monobloc casing (excluding sizes 32 … 41)
  • Generously proportioned bearings of low speed shaft (bearings and shaft) in order to withstand high loads on shaft end
  • Possibility of mounting large size motors
  • Possibility of square flanges for servomotor
  • Manufacturing and product management flexibility
  • High manufacturing quality standard
  • Minimum maintenance requirements
  • Standard motor to IE C
  • High, reliable and tested performance

Additional Information:

  • Sizes 16 (32 … 180)
  • Nominal torque MN2= 1 000 daN m
  • Performance P1 0,09 … 75 kW
  • Transmission ratio iN4 … 6 300
Shaft mounted gear reducers

Although shaft mounted gear reducers are designed principally for driving conveyor belts, they can also be used in machines where shaft-mounting is feasible, and where belt-drive is required between motor and gear reducer.

Main features:

  • Especially designed for belt conveyor drives
  • Easy shaft-mounting design
  • Strong casing

Typical fields of application:

  • Conveyor belts
  • Rotary screens
  • Screw conveyors
  • Mixers
  • Crushers
  • Elevators

Additional information:

  • 7 Sizes
  • Nominal power PN2 0,6 ÷ 85 kW
  • Nominal torque MN2 ≤ 1 180 daN m
  • Transmission ratio iN 10 … 25
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Parallel and right angle shaft gear reducers

Main features:

  • Highest reliability in heavy-duty applications and severe operating conditions.
  • Universal mounting design
  • Minimum maintenance requirements
  • Compliant with ATEX 94/9/EC directive
  • Rigid and precise spheroidal cast iron or electrically welded steel casing
  • High oil capacity
  • Gear pairs design especially studied to obtain high resistance, motion regularity, low noise and high efficiency with consequent low heating
  • Prearranged for backstop device, possibility of double extension low and high speed shaft
  • Possibility of withstanding high loads on shaft ends
  • Possibility of obtaining multiple and 90° drives with no restriction on direction of rotation of input/output shafts
  • Manufacturing and product management flexibility
  • High manufacturing quality standard
  • Minimum maintenance requirements

Additional information:

  • 10 Sizes (400 … 631)
  • Nominal power PN2 16 ÷ 3 650 kW
  • Nominal torque MN2 90 … 400 kN m
  • Transmission ratio iN 8 … 315

Engines

MARAT Group offers a wide range of electric motors designed for a variety of applications. In addition to supplying electric motors, we also offer a full range of services including assembly and disassembly, diagnostics, condition monitoring, repair and modernization of motors.

If you are looking for electric motors please send your inquiries to us and our technical consultants will present a suitable offer that will meet your expectations.

Range:

  • Electric motors
  • Motors for gear motor drives

Industries served:

  • Mineral industry
  • Production of cement and aggregates
  • Chemical industry
  • Food industry
  • Mining industry
  • Railway industry
  • Manufacturing
  • Drive systems
  • Factory automation

Gearbox repair

In case you are in need of industrial gearbox repair, you have come to a right place!

Marat Group specializes in rebuilding industrial gearboxes of various types with a transmitted power range of 15 to 1200 kW.

Our expertise is not merely confined to offering repair services. We also design and implement solutions that positively affect the smooth and efficient operation of your gearbox.

Flawless quality of our services has been confirmed by a host of quality certificates and recognitions that we have received throughout the years.

We perform meticulous tests on each gearbox and only after the thorough analysis implement a gearbox repair.

Test bench

Marat Group performs comprehensive diagnostic tests and measurements of various types of industrial gearboxes on its modern test bench that was designed by ABB.

Advantages of using the test bench:

  • Enables the control of work conditions (e.g. torque, vibrations, etc.)
  • Enables the control of the gear reducer’s engine oil temperature
  • Allows for preventive interference
  • Enables data recording, data processing, reporting and plotting
  • Ensures that gearboxes can be tested under real operating conditions

The test bench enables to test:

  • Power, torque, bearing temperature, vibration velocity, vibration acceleration, enveloped acceleration of bearing, and shaft speeds.
  • Changes in drive shaft load – up to 400kW
  • Changes in drive shaft rotational speed – from 0 to 1800 rpm both clockwise and anti-clockwise,
  • Changes in drive shaft torque – from 0 to 2565 Nm
  • Programmable load variation of tested gearboxes (incremental or sinusoidal). This allows for a gearbox to be tested under real operating conditions.

The analysis of the collected measurements are conducted using SKF’s specialized software @ptitude Observer and online vibration monitoring system IMx that allow for:

  • Direct monitoring of 16 channels with 24-bit resolution and frequency from 0 to 44 kHz
  • Automatic analysis of the collected data
  • Review and control of archived data
  • Control and monitoring from virtually anywhere in the world
  • Around-the-clock monitoring of machinery

We also use thermal imaging methods to test motors and gearboxes.

Diagnostic services

Cooperation with our company enables savings that earlier seemed impossible to obtain.

We have required knowledge and tools to detect and prevent machine failures.

Our preventive maintenance programs make sure to:

  • Eliminate dangerous machine failures
  • Reduce maintenance costs
  • Reduce overall cost of operations
  • Increase productivity

Scope of services:

  • Diagnostic services on bearings, machinery and equipment
  • Implementation of projects that supervise machines and production lines
  • Machine alignment (shaft alignment, belt alignment, etc.)
  • Supervision of assembly and disassembly of bearings
  • Design and implementation of centralized lubrication systems
  • Detailed examination and diagnostic measurements of industrial gearboxes

Technical services

We offer technical service on drive units, in particular on:

  • Gear motors
  • Gear reducers
  • Bearing housings and units
  • Couplings

We also provide technical service on wind turbine components:

  • Technical testing of equipment and mechanical assemblies
  • Inspection, condition assessment and repair of gearboxes
  • Gearbox replacement
  • Diagnostics and implementation of lubrication systems