GRUNDFOS MTS Screw-Sleeve Immersion Centrifugal Pump (Cutting Oil Pump)
The MTS K-type screw pump is specifically designed for the delivery of cutting oil and coolant, featuring the following core functional characteristics:
1. High-Efficiency Hydraulic Design
- Precision Screw Spindle: Manufactured from tool steel (1.2379), specially hardened and precision machined to ensure stable flow output under high-pressure conditions (pressure range 10-100 bar).
- Labyrinth control valve: effectively reduces pressure and energy loss, and is suitable for media of different viscosities (1-20 mm²/s).
2. Modular and Flexible Configuration
- Multiple spindle helix angle options: Available in specifications such as R34/R38/R48/R50/R60/R64/R76, precisely matching flow rate (0-113 l/min) and pressure requirements.
- Two installation methods:
- Immersion type (T-type): Directly installed on top of the fuel tank, saving space, with a maximum immersion depth of 129 mm (MTS 32).
- Dry type (D type/H type): Connected via SAE flange or thread, supporting horizontal or vertical installation.
3. Durability and Long Service Life
- Wear-resistant Material: The rotor housing is made of EN GJL-250 cast iron, and the surface of the spindle bore has undergone special hardening treatment.
The mechanical seal is made of silicon carbide (SiC/SiC) material and is suitable for abrasive media (concentration ≤20 ppm). - External main bearing design: reduces internal wear and extends maintenance intervals.
4. Intelligent Control and Energy Efficiency
- Variable Frequency Motor Options: MG motors support IE3 energy efficiency standards (50 Hz) or IE2/IE3 (60 Hz), achieving energy savings of up to 30%.
- Overload protection: Requires an external safety valve or control system for pressure relief (such as an H-type manual valve or an E-type electronic proportional valve).
5. Application Suitability
- Media Compatibility: Suitable for emulsions (2–20% oil content), cutting oils (containing EP additives), and inorganic solutions; maximum operating temperature of 80°C.
- Cleanliness Requirements: Filtration to ISO 4406 standards is recommended (e.g., particles ≤15 μm at oil pressures ≤100 bar).
6. Low Noise and Compact Design
- Sound Pressure Level ≤78 dB(A): Optimized fluid flow paths result in lower noise levels compared to similar lobe pumps.
- Compact Dimensions: For example, the dry-installed MTS 25 model has a length of only 176 mm and weighs between 38 and 110 kg (depending on the specific model).