The Grundfos MTR 8 Vertical Immersible Multistage Coolant Pump (MTR 8) is part of the Grundfos MTR range, engineered in Cast iron motor stool / 304 stainless wetted parts. Delivers up to 45 GPM at heads up to 540 ft, with motor sizes from 1-7.5 HP. Drive: Separable NEMA motor mounted above tank, immersible pump end inside coolant tank. Used in Coolant supply to lathes and similar applications.
Specifications
| Max flow | 45 GPM (60 Hz) |
| Max head | 540 ft |
| Max working pressure | 290 psi |
| Motor range | 1-7.5 HP |
| Stages | up to 24 |
| Immersion depth | 6-31 in |
| Frequency | 60 Hz |
| Voltage | 115/230 V single-phase or 208-230/440-480 V three-phase (model dependent) |
| Liquid temperature | 5 - 250 °F (-20 - 250 °F with HQQV seal) |
| Construction | Cast iron motor stool / 304 stainless wetted parts |
| Motor | Separable NEMA motor mounted above tank, immersible pump end inside coolant tank |
| Brand | Grundfos |
| Model | MTR 8 |
| Country of Origin | Denmark / USA (varies by model) |
Materials of Construction
Cast iron motor stool, 304 stainless chambers, sleeve and shaft; ceramic/SiC shaft seal
Typical Applications
- Coolant supply to lathes
- milling
- grinding
- drilling
- machining centers; chip & particle handling; filter back-flush
Datasheets & Manuals
Industries & Applications
The Grundfos MTR 8 is widely deployed across these industries and use cases:
- Coolant supply to cnc milling machines
- Coolant to cnc lathes
- Grinding machine coolant filtration
- Machining center coolant systems
- Tank-top mounting in machine tools
- Industrial parts-washing equipment
Related & Compare
Frequently Asked Questions
- What is the maximum flow rate of the Grundfos MTR 8?
- The MTR 8 delivers up to 45 GPM at 60 Hz.
- What is the maximum head/pressure of the MTR 8?
- Maximum head is 540 ft (about 290 psi). Actual operating point depends on stage count and motor size.
- What materials of construction are available for the MTR 8?
- Cast iron motor stool, 304 stainless chambers, sleeve and shaft; ceramic/SiC shaft seal
- What applications is the Grundfos MTR 8 suitable for?
- Coolant supply to lathes, milling, grinding, drilling, machining centers; chip & particle handling; filter back-flush
- Is the Grundfos MTR 8 available with stock or quick-ship lead times?
- Many configurations ship from stock through Grundfos USA. Contact ForeverPure Place for current lead time on your specific configuration.
- How do I get a quote for the Grundfos MTR 8?
- Use the Request Quote button on this page, call our sales team, or email sales@foreverpureplace.com with model, voltage, materials, seal type and quantity.
Need help selecting the right MTR 8 configuration, NEMA motor, materials or seal type? Contact our pump engineering team for sizing assistance, pricing and lead times.
Accessories for This Pump
Commonly specified alongside fixed-speed Grundfos pumps. Send us your pump nameplate and we will confirm the correct part for your exact build and voltage before you order.
CUE Variable Frequency Drive
External VFD that converts this fixed-speed pump to constant-pressure or variable-flow control.- RPS Pressure Sensor
Discharge pressure feedback for constant-pressure booster control.
