Mechanical Department Products

Gearboxes and Geared motors
WEG-CESTARI is proud of its power transmission division and of the quality of its products, due to the wide range of applications they offer, and the remarkable competence for the development of special projects. This includes supplying of:
  • The traditional line HELIMAX has new projects with greater capacity and lower weight.
  • Products with the highest efficiency and performance, 100% Made in Brazil.
  • Modularity and wide variety of assemblies in gerboxes and geared motors.
  • Tailored projects with the security and reliability of the brand WEG CESTARI.
Gear Unit and Geared Motor for Cooling Tower.
  • Custom gear units, with project and manufaturing in according to customer's needs.
Elastic couplings C and D series.
  • Torsionally elastic couplings, for heavy dutty applications.

Dosing pumps and Feeding pumps are oscillating displacement pumps for the dosing and feeding of liquids in all industrial fields. We can dose nearly all flowing media, even with aggressive, abrasive, odorous, radioactive, inflammable, viscous or toxic properties – reliably and safely!

Performance features of all sera dosing pumps:
  • High dosing accuracy
  • Leakage free
  • Robust and durable
  • Low maintenance
  • Long service life of diaphragms
  • Dry running safe
  • Low operating costs
  • High-quality materials
  • Linear control characteristics
  • Easy to operate
  • Low weight
  • Wide range of applications due to an extensive range of material combinations and accessories

With Piston Compressors relatively large amounts of gas can be conveyed at low suction pressures. The piston compressor series can be used wherever production processes require large quantities of absolutely oil-free gas. So we can react flexibly to virtually all customer needs.

Some Application fields:

  • Automotive industry (compressed air supply for painting systems)
  • Petrochemistry (transfilling, recycle gas)
  • Energy sector (H² storage)
  • Biogas applications and CO² recovery (in breweries and the food and beverage industry)

The series of the Piston Compressors KV1, KV2 and KV3 is characterized by the vertical design and the piston compressors are air-cooled.
The series of Piston Compressors KV4, KV5, KV6, KV7 and KV8 is characterized by a vertical design and the piston compressors are water-cooled.
The series of the Piston Compressors KV9 is characterized by a V-construction and is water-cooled.


Metal Diaphragm Compressors of the series MV with hydraulically coupled PTFE-diaphragms.

Performance of the type series MV 1 … up to MV 4 …(upright)

  • single-stage diaphragm compressors
  • upright
  • suction pressure: higher than or equal 1 bar (a)
  • final pressure: up to 500 bar (a)
  • compression ratios up to 1:15 (depending on type of gas)

Metal Diaphragm Compressors of the series MV with hydraulically coupled PTFE-diaphragms

Performance of MV5 horizontal:

  • single-stage diaphragm compressors
  • horizontal
  • suction pressure: 0,5 to 1 bar (a)
  • final pressure: up to 15 bar (a)
  • compression ratios up to 1:15 (depending on type of gas)

Metal Diaphragm Compressors of the series MV with hydraulically coupled PTFE-diaphragms

Performance of MV5 II – horizontal:

  • two-stage diaphragm compressors
  • compact V-construction
  • suction pressure: higher than/ equal 1 bar (a);
  • final pressure: up to 200 bar (a)
  • compression ratios up to 1:10 per stage (depending on type of gas)

S-Series –
The Screw: dry running and low maintenance vacuum pump

The S-VSI screw vacuum pump (sizes 100 and 300) represents modern, state-of-the-art dry running technology that excels when it comes to small carbon footprint and low life cycle costs. It is used in a variety of industrial applications such as drying and packaging. Click here to find out more.

The S-VSA and S-VSB dry running, contact-free screw vacuum pumps are primarily used in the chemical and pharmaceutical industries for processing applications. A contamination with oil or other operating liquids is impossible. Several pump sizes are available with ATEX certification.

Advantages at a glance

  • Dry running
  • High vacuum in one stage
  • Application specific options
  • Short evacuation time due to high suction capacities
  • Insensitive against water shocks

C-Series –
Innovative Claw Technology

The C-Series claw pumps and compressors of Elmo Rietschle generate contact-free vacuum or compressed air efficiently and economically. This is possible because of the principle of internal compression. The gas is pre-compressed within the compressing chamber and is then discharged.

This leads to an evident energy saving compared to rotary lobe blower designs without internal compression.
Advantages at a glance

  • Dry, contact-free operation
  • Process safe and reliable
  • No oil in the compression chamber
  • Frequency control available
  • Low sound level
  • No greasing of bearings

R-Series –
Rotary Lobe Blowers: rugged and economical

These compact rotary lobe blowers belong to the group of dry running positive displacement pumps. This means that there is no need for oil or grease in the compression chamber. Only gear box and bearings, which are separated from the pumping chamber, are oil lubricated. Two non contacting triple lobed rotary lobe rotors rotate against each other in the compression room.

The triple lobed rotors avoid pulsation problems. The blowers are customized to cater for the varying demands of our customers‘ applications.
Advantages at a glance

  • Robust and economical
  • Dry running
  • Modular design
  • Available as single aggregates
  • Available as individually engineered pump sets
  • Frequency control available

V-Series –
Dry Running and Oil Lubricated Rotary Vane Pumps and Compressors

Elmo Rietschle offers dry running and oil lubricated rotary vane pumps which cover a wide performance range.

The eco-friendly dry running rotary vane pumps are used for vacuum, pressure and combined pressure and vacuum applications. The time-tested oil lubricated rotary vane machines are typically used for generating vacuum.
Advantages at a glance

  • Dry running and oil lubricated versions
  • Low noise level
  • Robust and economical
  • Long up times
  • Easy to operate

L-Series –
Compact Liquid Ring Pumps for Heavy Duty

Extreme conditions, which prevail in humid and wet processes, lead to lime scale or abrasion, and hence to a considerable reduction in the performance of the pump. Elmo Rietschle liquid ring pumps, however, meet these challenges.

The use of high-quality materials such as stainless steel and ceramics ensure utmost reliability and constant operating characteristics – for years to come.
Advantages at a glance

  • Constant operating characteristics by ceramic coating
  • Maximum abrasion resistance
  • Excellent corrosion resistance
  • No deposits and lime scale

G-Series –
Side Channel Blowers Leading in Excellence

Some technologies are so good that it is hard to improve them. Side channel blowers from Elmo Rietschle are such an example. They have proven their reliability in service for many decades, performing flawlessly day in and day out with virtually no down time. Noise levels have been lower than that of most other vacuum pumps and compressors.

Side channel blowers are used for conveying gases and gas-air mixtures.
Advantages at a glance

  • Reliable and built-to-last, virtually maintenance-free
  • Robust yet light-weight
  • For use worldwide (UL/CSA/IEC/EN approval)
  • 50/60 Hz voltage range motors
  • ATEX 94/9 EG
  • Adjustable speed via external or integral converter

F-Series –
Centrifugal blowers for industrial use

Elmo Rietschle offers a broad portfolio of single and multistage centrifugal blowers for vacuum and pressure operation.

The applications of Radial blowers are mainly used in the packaging and paper industries, with the smaller units are suitable for extracting dust with fine material such as paper powder and powdered solids.

Benefits at a glance

  • Cast housing and impellers
  • Robust and economical
  • lubrication of bearings
  • Quiet and vibration-free running
  • Reliable and durable
  • Speed ​​control via frequency converter possible