Electric Motors
Electric motors are three-phase asynchronous motors driving pumps, fans and machines, with foot (B3), flange (B5) or small flange (B14) mounting options.
They are used for pump motor replacement, new pump sets and applications in explosive atmospheres. The product range includes motors from 0.55 kW to 75 kW, 1450 and 2900 rpm, IE2 and ATEX ex-proof.
Main Applications
- Pump motor replacement
- New pump sets
- Fan and compressor drives
- Explosive atmosphere applications (ATEX)
- Conveyor and machine drives
Technical Data
| Type | Three-phase asynchronous electric motor |
|---|---|
| Power | 0.55 – 75 kW (product range) |
| Speed | About 1450 and 2900 rpm (product names) |
| Efficiency class | IE2 (product names); others depending on model |
| Mounting | B3 foot, B5 flange, B14 small flange (product range) |
| Ex-proof | ATEX Ex d IIC T4 etc. (product names; depending on model) |
| Supply | Depending on model |
| Protection class | Depending on model |
Material Options
| Part | Standard motor | Ex-proof (ATEX) motor |
|---|---|---|
| Environment | Normal industrial | Explosive gas / dust atmosphere |
| Housing | Aluminium or cast (depending on model) | Flameproof cast housing |
| Certificate | Depending on model | ATEX certificate |
| Typical use | Pumps, fans, machines | Chemicals, fuel, paint |
Which material? When replacing a motor, power, speed, mounting (B3/B5/B14), shaft diameter and flange size must match the existing equipment exactly. For explosive atmospheres the zone and gas group must be stated.
Advantages
Wide Power Range
- 0.55 – 75 kW
Three Mounting Types
- B3, B5, B14
Ex-Proof Option
- ATEX
Fast Replacement
- Motors from stock
Construction and Design Features
- Stator and rotor
- Shaft and bearings
- Fan and cover
- Terminal box
Send the power, speed, mounting, shaft and flange size and environment; we will confirm a suitable electric motor from stock.
How to Choose?
- Mounting and connectionDetermine B3, B5 or B14 with shaft and flange size.
- Power and speedChoose kW and rpm for the pump need.
- EnvironmentState the ATEX zone in explosive atmospheres.
- EfficiencyDetermine efficiency class needs.
Complementary Products
Why ORFA?
Other Pump Accessories and Spare Parts
Our Electric Motors
ORFA supplies electric motors in a range of pressure classes, sizes and connection types to suit your application. Descriptions, technical specifications, materials and dimension tables are available on each detail page.
Get a quote for your project
Our sales team will prepare the best solution for your needs.