Iwaki MDM-50-CF-KK Mag Drive Pump
Spare Parts for MDM-50-CF-KK Mag Drive Pump
Product Summary
The Iwaki MDM-50-CF-KK is the industry-standard magnetic drive pump for aggressive chemical handling in Australia. Constructed from Carbon Fiber Reinforced ETFE (CFRETFE) with Silicon Carbide (SiC) internal bearings, it is engineered to handle concentrated acids and alkalis (up to 105°C) without the risk of corrosion or seal failure common in mechanical seal pumps.
- CFRETFE Construction: Carbon Fiber Reinforced ETFE body provides the mechanical strength of metal with the chemical immunity of a fluoroplastic.
- Non-Contact System: Patented mechanism prevents the drive magnet from contacting the rear casing during dry-run, preventing catastrophic melt-down.
- SiC Bearings (KK): High-purity Silicon Carbide shaft and bearings allow for handling of aggressive chemicals and slurries with superior wear resistance.
- Back Pull-Out: Design allows for easy removal of the rotating element for maintenance without dismantling the piping.
- ETFE Containment Shell: Reinforced rear casing handles high pressures and eliminates eddy current losses, improving efficiency.
Spare Parts List
| Select | Qty | Part Number | Description | Material / Spec |
|---|---|---|---|---|
| 1 | MDM-50-02-CF-Y | Impeller & Magnet (Y) | CFRETFE / Ferrite | |
| 1 | MDM-50-01-CF | Front Casing | CFRETFE (Carbon Filled) | |
| 1 | MDM-50-03-CF | Rear Casing / Shell | CFRETFE (Carbon Filled) | |
| 1 | MDM-50-06-KK | Spindle (Shaft) | SiC (Silicon Carbide) | |
| 1 | MDM-50-07-KK | Bearing | SiC (Silicon Carbide) | |
| 1 | MDM-50-09-KK | Rear Thrust Ring | SiC (Silicon Carbide) | |
| 1 | MDM-50-08-Y | Mouth Ring (Wear Ring) | PTFE (Teflon) | |
| 1 | MDM-50-10-A | Inner Thrust Ring | Alumina Ceramic | |
| 1 | MDM-50-15-V | Casing O-Ring (G-185) | FKM (Viton) | |
| 1 | MDM-50-17-V | Containment O-Ring (G-190) | FKM (Viton) | |
| 2 | MDM-50-16-V | Drain O-Ring (P-24) | FKM (Viton) | |
| 1 | MDM-50-04 | Drive Magnet | Rare Earth / FCD450 | |
| 1 | MDM-50-11 | Support Cover | FCD450 (Ductile Iron) | |
| 1 | MDM-50-12 | Back Plate | FCD450 (Ductile Iron) | |
| 2 | MDM-50-21-CF | Drain Cap | CFRETFE | |
| 1 | MDM-50-54 | Bracket (Frame 112M) | FC200 (Cast Iron) |
Exploded Parts Views
Key Technical Specifications
| Parameter | Value |
|---|---|
| Model / Curve | MDM-50-CF-KK (High Head) |
| Rated Power | 3.7 kW / 5.5 kW (Frame Size 112M) |
| Voltage / Frequency | 415V / 50Hz (3-Phase) |
| Rated Current | Approx 7.3 A (at 3.7kW) |
| Discharge Connection | 50mm Suction / 40mm Discharge (Flange) |
| Impeller Type | Closed / CFRETFE (Standard Y Curve) |
| Installation Type | Horizontal Mag-Drive Process Pump |
Troubleshooting, Common Faults & Solutions
Pump does not discharge
Likely Cause: Air lock in suction line or rotating in reverse.
Action / Part: Prime pump and check motor rotation (3-Phase).
Abnormal noise/vibration
Likely Cause: Worn Bearing (07) or Cavitation.
Action / Part: Inspect SiC Bearing and check NPSH available.
Motor overload (Trips)
Likely Cause: Fluid viscosity/SG too high or internal rubbing.
Action / Part: Check fluid specs or inspect Magnet Capsule for contact.
Leakage from pump
Likely Cause: Damaged O-Ring or loose Casing Bolts.
Action / Part: Replace O-Ring (15) and retorque casing bolts.
Poor Performance (Head/Flow)
Likely Cause: Mouth Ring worn or strainer clogged.
Action / Part: Replace Mouth Ring (08) or clean suction strainer.
Online Resources
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