Motovario Clean Duty Series Worm Gearboxes

Smooth round body worm gearboxes for food processing and other washdown environments where hygiene standards must be maintained.

6 sizes · SW-CD030 to SW-CD090 · up to 432Nm · up to 1.5kW · ratios 5 to 100:1 · washdown pH 2 to 12

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Clean Duty is Motovario’s worm geared motor for aggressive environments and high hygiene requirements. Built on the round body SW Series, it is treated to stop water and dirt collecting, resists washing with products from pH 2 to 12 and high-pressure water, and comes in three versions to match the cleaning regime.

Clean Duty overview

Motovario developed Clean Duty for the food industry and other applications with very high hygiene standards, particularly primary processing such as packaging lines for fruit and fresh food. Its compact, smooth body and corrosion-resistant materials suit cutting, slicing, dosing, packaging and hot or cold temperature-controlled processes.

There are three versions. SW-CD/A has a blue RAL 5010 painted casing and a standard motor. SW-CD/C and SW-CD/D have an unpainted casing protected by Motovario’s MotoNiTech TNC17 chemical treatment and a stainless steel motor. All three have an AISI stainless steel hollow output shaft, bolts, nuts and cable gland, and an input flange with a graphite gasket. Food grade lubricant and high-pressure oil seals are standard on SW-CD/D and options on SW-CD/A.

Motovario immersion-tested the MotoNiTech treatment for 28 days in industrial detergents and sanitisers, simulating seven years of use, with no change in colour, gloss or protective properties to DIN EN ISO 4628-1. The motors have smooth surfaces without cooling fins, can be supplied without a fan, and are rated IP66, with up to IP69K available. Sizes run from SW-CD030 to SW-CD090, for motors up to 1.5kW with B14 flanges as standard.

Features and benefits

  • Designed for hygiene – smooth, compact round body treated to stop water and dirt collecting.
  • Resists aggressive cleaning – washing with acid and alkaline products from pH 2 to 12 and high-pressure water.
  • MotoNiTech TNC17 treatment – chemical surface treatment on the C and D versions.
  • AISI stainless steel output shaft, fasteners and cable gland – on every version.
  • Food grade lubricant – standard on SW-CD/D, optional on SW-CD/A.
  • High-pressure oil seals – standard on SW-CD/D, optional on SW-CD/A.
  • Smooth stainless steel motor – on SW-CD/C and SW-CD/D, without cooling fins, optionally without a fan, IP66 and up to IP69K.
  • Six sizes up to 432Nm – ratios from 5:1 to 100:1.

Clean Duty specifications

SpecificationClean Duty (SW-CD)
TypeRound body worm geared motor for washdown and hygiene-critical areas (VSF series)
SizesSW-CD030, 040, 050, 063, 075, 090
Output torqueUp to 432Nm (SW-CD090)
Ratios5:1 to 100:1
Motor flangeB14 as standard (IEC 56 to 112 depending on size); B5 on request
Motor powerUp to 1.5kW
Output shaftAISI stainless steel hollow output shaft
Cleaning resistanceWashing with products from pH 2 to 12; high-pressure water
MotorSmooth surfaces without cooling fins, optionally without fan; IP66, up to IP69K
Other hygienic detailsGraphite gasket on input flange; output seals resistant to high-pressure washing; food grade label
LubricationSynthetic oil, lubricated for life; food grade lubricant standard on SW-CD/D, optional on SW-CD/A

Clean Duty sizes.

SizeMaximum output torque (Nm)Ratio range
SW-CD030225 to 80
SW-CD040485 to 100
SW-CD050885 to 100
SW-CD0631607.5 to 100
SW-CD0752307.5 to 100
SW-CD0904327.5 to 100

Clean Duty versions.

FeatureSW-CD/ASW-CD/CSW-CD/D
Casing finishBlue RAL 5010 paintMotoNiTech TNC17 chemical treatmentMotoNiTech TNC17 chemical treatment
Output shaftStainless steelStainless steelStainless steel
Bolts and nutsStainless steelStainless steelStainless steel
Food grade lubricantOptionNot availableStandard
High-pressure oil sealOptionNot availableStandard
MotorStandard motorStainless steel motorStainless steel motor

Source: Motovario TECHNICAL CATALOGUE VSF / IEC / STD / EN / REV.0 / 2024 (worm geared motors: NMRV, NMRV-P, SW, SW-CD), with nominal torque Mn2 and ratio ranges from the NRV/ISW reducer tables at 1400rpm input, efficiency from the mesh data tables, bores from the dimension tables and lubrication from the quantity notes; cross-checked against the Motovario VSF product pages and Clean Duty brochure CLEAN DUTY/2021/REV.0/EN. Checked 2 November 2026.

Downloads

For technical information, brochures and further product details, visit our downloads page.

Clean Duty FAQs

A version of the round body SW worm geared motor built for washdown and hygiene-critical areas, with treated or painted casings, stainless steel shafts and fasteners, and food grade lubricant and stainless motor options.

SW-CD/A, with a painted casing and standard motor, suits splash and routine cleaning. SW-CD/C adds the MotoNiTech chemical treatment and a stainless steel motor. SW-CD/D adds food grade lubricant and high-pressure oil seals as standard, for the most demanding food processing washdown.

Washing with acid and alkaline products from pH 2 to 12, and high-pressure water. Motovario immersion-tested the MotoNiTech treatment for 28 days, simulating seven years of use, with no loss of protective properties.

Clean Duty is designed for food processing, with food grade lubricant standard on the SW-CD/D and optional on the SW-CD/A. Check the version against your hygiene requirements before ordering.

B14 motor flanges are standard. B5 flanges are available on request.

Choose a Clean Duty gearbox

Tell us the torque, output speed and how the line is cleaned, and we will specify the Clean Duty version and motor.

 

Contact

Betech 100pt Ltd
Four Square Buildings, Thomas Street
Heckmondwike, West Yorkshire, WF16 0LS

Telephone: 01924 411921
Email: sales@betech.co.uk
Opening hours: 8:00 to 17:00