Iwaki MD-55R-115 Magnetic Drive Pump
The Iwaki MD-55R-115 is a compact, seal-less centrifugal pump built for anyone who needs to move liquids reliably without worrying about leaks or corrosion. Its glass-fiber reinforced polypropylene (GFRPP) casing and magnetic coupling eliminate the mechanical shaft seal entirely, so there's nothing to wear out or drip over time. That makes it a dependable choice for chemical processing lines, laboratory setups, water treatment skids, and general fluid transfer tasks where a traditional sealed pump would eventually need maintenance.
Powered by a 1/8 HP, 115V, single-phase TEFC motor, the MD-55R-115 runs quietly at 3400 RPM while still delivering solid flow and head performance for its size. The internal components, including a ceramic spindle and PTFE bearing, are designed to handle continuous duty in demanding environments, and the non-metallic construction means it plays well with a wide range of chemically aggressive or high-purity fluids, as long as those fluids aren't magnetic in nature.
Whether it's installed in an industrial recirculation loop, a filtration system, a chiller, or a piece of lab equipment, this pump earns its reputation for being compact yet capable. It's a practical option for engineers and technicians who want dependable, low-maintenance fluid handling without the bulk or complexity of larger pump systems.
Key Features
- Seal-less magnetic drive design eliminates leak-prone mechanical shaft seals
- GFRPP (glass-fiber reinforced polypropylene) casing resists corrosion and chemical attack
- Ceramic spindle and PTFE bearing support smooth, long-lasting operation
- TEFC (Totally Enclosed Fan Cooled) motor for quiet, protected performance
- Compact, space-saving footprint suitable for tight installations
- Non-metallic construction compatible with a wide range of process fluids
Applications
- Chemical transfer and process fluid handling
- Laboratory and analytical equipment
- Water and wastewater treatment systems
- Filtration and recirculation loops
- Chiller and cooling system fluid circulation
- General industrial and OEM equipment integration
Specifications
- Model: MD-55R-115
- Pump Type: Magnetic drive centrifugal pump
- Casing Material: GFRPP (glass-fiber reinforced polypropylene)
- Motor: 1/8 HP, 115V, single-phase, TEFC
- Motor Speed: 3400 RPM (50/60 Hz)
- Port Size: 1" (hose barb; NPT threaded version available)
- Bearing Material: PTFE
- Spindle Material: Ceramic
- Specific Gravity Limit: Approx. 1.2
- Operating Temperature Range: 0°C to 80°C (32°F to 176°F)
Frequently Asked Questions
Q: Is the Iwaki MD-55R-115 self-priming?
A: No, this pump is not self-priming and should be installed with a flooded suction to prevent dry-run damage.
Q: Can the MD-55R-115 handle corrosive chemicals?
A: Yes, its GFRPP construction and seal-less design make it well suited for many corrosive and aggressive fluids, though compatibility should be confirmed for specific chemicals.
Q: What voltage and phase does this pump require?
A: It runs on 115V, single-phase power, making it easy to integrate into standard equipment setups.
Q: Can this pump run dry for short periods?
A: No, running dry can damage the bearing and spindle, so continuous liquid flow is required during operation.
Q: Is the MD-55R-115 suitable for use with magnetic or ferrous particulates in the fluid?
A: No, because the pump relies on magnetic coupling, fluids containing iron, nickel, or other magnetic materials should be avoided.
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