Product Description
Edwards E2M28 Two-Stage Rotary Vane Vacuum Pump
OEM part number: A37333940
Factory configuration: HC IE3 EU/US, 50/60 Hz, 3-phase
Call for pricing and availability. This factory configuration is quoted to order.
Overview
Edwards E2M pumps are proven oil-sealed two-stage rotary-vane pumps designed for reliable high-vacuum duty. The range provides strong pumping speed, low ultimate pressure and multiple factory preparations for laboratory, OEM and industrial systems.
| Pumping speed | Ultimate pressure | Connections | Sound / weight |
|---|---|---|---|
| 27.5 m³/h at 50 Hz; 33.0 m³/h at 60 Hz | 1 × 10⁻³ mbar | NW25 | 44 kg / 97 lb; 57 dB(A) |
Configuration
| Field | This product |
|---|---|
| Edwards OEM part number | A37333940 |
| Model | E2M28 |
| Electrical / factory configuration | HC IE3 EU/US, 50/60 Hz, 3-phase |
| Pump preparation | Hydrocarbon oil |
| Purchase status | Call for pricing and availability |
Features
- Two-stage design provides low ultimate pressure with dependable pumping speed.
- Gas ballast supports condensable-vapor handling.
- Oil-sealed mechanism provides sealing, lubrication and heat removal.
- Factory electrical and application-specific preparations simplify system integration.
- Serviceable design with globally supported Edwards consumables and spares.
Technical Specifications
| Specification | Value |
|---|---|
| Peak pumping speed | 27.5 m³/h at 50 Hz; 33.0 m³/h at 60 Hz |
| Ultimate pressure, gas ballast closed | 1 × 10⁻³ mbar |
| Ultimate pressure, gas ballast open | 1.5 × 10⁻² mbar |
| PFPE-prepared ultimate pressure | 1 × 10⁻² mbar |
| Inlet | NW25 |
| Water-vapor tolerance / capacity | 30 mbar / 0.7 kg/h |
| Motor power | 0.75 kW at 50 Hz; 0.90 kW at 60 Hz |
| Oil capacity | 1.2-1.5 L |
| Weight / typical sound level | 44 kg / 97 lb; 57 dB(A) |
| Recommended oil | Edwards Ultragrade Performance 19; PFPE lubricant for PFPE-prepared pumps |
Performance and electrical data vary by frequency and factory configuration. Confirm the part number and motor requirements before ordering.
Performance Curve
Available E2M28 Configurations
| Edwards part number | Electrical / factory configuration | Preparation | VPS price |
|---|---|---|---|
| A37343940 | FX IE3 EU/US, 50/60 Hz, 3-phase, PFPE | PFPE-prepared | Call |
| A37343934 | FX IE3 Asia, 50/60 Hz, 3-phase, PFPE | PFPE-prepared | Call |
| A37333940 (this pump) | HC IE3 EU/US, 50/60 Hz, 3-phase | Hydrocarbon oil | Call |
| A37333934 | HC IE3 Asia, 50/60 Hz, 3-phase | Hydrocarbon oil | Call |
| A37325984 | 115/200-230 V, 50/60 Hz, 1-phase, PFPE | PFPE-prepared | Call |
| A37317984 | 115/200-230 V, 50/60 Hz, 1-phase | Standard hydrocarbon oil | Call |
| A37315904 | 100/200 V set 200 V, 50/60 Hz, 1-phase | Standard hydrocarbon oil | Call |
| A37315903 | 220-240 V, 50/60 Hz, 1-phase, legacy motor | Standard hydrocarbon oil | Call |
Maintenance, Oil & Filters
| Maintenance item | Recommended product or resource | Part number / notes |
|---|---|---|
| Vacuum pump oil | Edwards Ultragrade 19, 4 L | H11025021 — Verify required fill volume for this model. |
| Repair / service kit | E2M28 / E2M30 major repair kit | 37301800ED |
| Filter | MF30 outlet mist filter | A46233000 |
| Resource Center | Edwards E2M Series Vacuum Pump Resource Center | Kits, oil, filters, manuals and maintenance guidance. |
Applications
Vacuum furnaces, freeze drying, coating, distillation, drying, degassing, research systems, backing service and general industrial vacuum.
Resources
Need help confirming the correct configuration?
Have the required voltage, phase, frequency and process details ready. We will help verify the Edwards part number.
Product Videos
Custom Field
GoogleCategory Business & Industrial > Manufacturing
