Motorized Pulley 320L, 320M & 320H

Motorized Pulley diameter 320 mm - Length min. RL 400 mm and power between 0.75 and 11.0 kW. Meant for applications with regular operating conditions like portable conveyors and cross-belt & take-away conveyors in mobile crushing & screening.

Motorized Pulley 320L, 320M & 320H


Other information about the product

Motorized Pulley 320L, 320M & 320H, Ø320 mm
To match your requirements in diameter 320 mm, our product range offers three different loading performances for your BULK applications:

  • L for Light-duty
  • M for Medium-duty
  • H for Heavy-duty

You have a choice.
Therefore, it is important to notice the differences to choose the right type of Pulley for the right application based on estimated belt tension (radial load) = T1+T2. The actual radial load MUST be LESS than the max. allowable radial load shown in this catalogue.
Be aware of increased belt tensions using multi-ply thick heavy belts and/or larger belt widths.
If you do not find the belt tension needed in this diameter, you might have to choose a larger one.

L for Light-duty
320L is meant for applications with regular and constant operating conditions. Max. allowable radial load has to be respected; therefore it is advisable to rubber lag these Pulleys to increase grip and to limit belt tension.

 320L should NOT be used for e.g. feeder conveyors. (Motor/gearbox origin from 220M).

M for Medium-duty
The internal parts of 320M are designed for TOUGH and IRREGULAR working conditions - e.g. in crusher & screening applications, asphalt, cement and concrete plants etc.

H for Heavy-duty
Due to a solid 3-stage gearbox, Ø 50 mm shafts, matching bearings etc, 320H provides the necessary forces needed for low speeds combined with high power, and is designed to handle irregular loadings in BRUTAL conditions.

Related applications
Case history


Detection of energy saving and noise reduction in comparison with a conventional Drive

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Powerful Rulmeca motorized pulley type 1000H 200kW installed on a feeding conveyor at EGAT power station in Thailand.

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Dual Drive System for Belt Conveyors at Buzzi Unicem USA

Cement plants, shipping terminals, mines, and a variety of other bulk materials handling facilities have incorporated Rulmeca Motorized Pulleys into plant upgrades for more than 60 years.

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Cargill Deicing – Avery Island – LA, USA

The Company has battled the effects of corrosion and abrasion, due to salt accumulation in the humid Louisiana marshland, by converting its exposed conveyor drive systems to internally-powered conveyor drive pulleys.

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USA projects in 2016

PCS Phosphate, Aurora, NC Motorized Pulley & Idlers: 400M, UT500H - Lippmann Milwaukee #4800 Plant & #6500 Plant - Empire Rubber (NorPac Food & Smith Frozen Foods)

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800HP Motorized Pulleys at the Westmoreland coal mine, Wyoming USA

Coal mines and thermal power plants have used Rulmeca Motorized Pulley conveyor belt drives for more than 60 years.

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Energy Saving CO2

Pipe conveyor – 120m – Lift height = 35m 200 Kw Conventional drive 132 Kw Rulmeca Motorized pulley BST - Partial Lagging - Remagrip 15mm CKX ATEX Zone 21 with boost

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Nuova Geodis

NUOVA GEOVIS SpA , Italy, belongs to the ERA Group of Companies, responsible for the recycling services in the Italian area of Emilia. The Group is composed by 2 plants.

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Rulmeca Corporation Solves Conveyor Problems at US Iron Ore Port

CN installed six Rulmeca Motorized Pulleys to upgrade two 40-year-old crawler-mounted MX bucket wheel reclaimers at the company’s Two Harbors, MN facility.

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Valmet Oyj (Finland), Hofor project (Denmark)

Valmet Oyj (Finland), Hofor project (Denmark)

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