Japan, Maeda Koki
Maeda Koki MKCM Type Oil Signal

Made in Japan
Manufacturer: Maeda Machinery Research Institute Ltd.
Model: MKCM Type
Features
- Flow switch
- Detects the flow of fluid and turns the switch ON or OFF at the specified flow rate.
- *The switch is fixed (the setting cannot be changed later). A flow detector that checks the flow of fluid by the movement of a float inside a transparent tube that
allows you to see the flow of oil at a glance . Comes with a protective cover. - The metal protective cover reduces the possibility of damage from external impacts . No need to worry about the installation direction . A spring is used inside, so the installation position can be freely adjusted, such as upward, downward, or sideways.
Model list
Model | Dimensions (mm) [The overall width is the casting surface, so there may be individual differences in dimensions] | Flow rate (L/min) | |||||
---|---|---|---|---|---|---|---|
Connection port size | Full length | Overall width | Depth | Minimum inner diameter φmm | Specified range of operating flow rate | Maximum | |
MKCM20-1TL-OFF | Rc1/8 | 80 | 30 | 22 | 6.5 | 0.005 (5cc) to 2 | 5 |
MKCM20-1TL-ON | |||||||
MKCM20-2TL-OFF | Rc1/4 | 80 | 30 | 22 | 6.5 | 0.005 (5cc) to 2 | 5 |
MKCM20-2TL-ON | |||||||
MKCM30-4TL-OFF | Rc1/2 | 110 | 44 | 32 | 9.5 | 0.05 (50cc) to 5 | 10 |
MKCM30-4TL-ON | |||||||
MKCM35-4TL-OFF | Rc1/2 | 124 | 49 | 44 | 13.5 | 1-10 | 25 |
MKCM35-4TL-ON | |||||||
MKCM45-6TL-OFF | Rc3/4 | 142 | 62 | 50 | 18.0 | 3–15 | 50 |
MKCM45-6TL-ON | |||||||
MKCM45-8TL-OFF | Rc1 | 142 | 62 | 50 | 18.0 | 3–15 | 50 |
MKCM45-8TL-ON |
Specifications
fluid | oil | ||
Operating Flow Rate | Please specify a flow rate within the specified range of operating flow rates above. (If possible, specify a flow rate value that is 1/3 or less of the minimum operating flow rate.) | ||
connection | Rc female thread | Change to R male thread. Combination with R male thread is also possible. | |
Heatproof temperature | Maximum 60°C | Heat-resistant specifications (maximum 100°C) are also available. | |
Pressure resistance | 1MPa | Pressure-resistant specifications (maximum 5MPa) are also available. | |
Maximum Operating Voltage | DC, AC 300V | ||
Maximum current used | DC, AC 0.5A | ||
Contact Capacity | 50VA | ||
Material | Transparent tube | acrylic | Heat-resistant and pressure-resistant products are made of brass tube (C3604). Heat-resistant and pressure-resistant products have a float that cannot be visually inspected. |
Protective cover | BC (gunmetal) | Aluminum versions are also available. | |
Fittings | C3604 (Brass) | SUS products are also available. | |
spring | SUS304 | – | |
Magnet included float | Aluminum | – | |
O-ring | Nitrile Rubber | Heat and pressure resistant specifications are made of fluororubber. | |
Reed switch | Commercial goods | – | |
Lead wire (standard 200mm) | Commercial goods | You can also specify the length of the lead wire and change to a cab-tire cord. |
Precautions when using flow switches
1. Precautions regarding magnetic fields
- Reed switches are magnetic switches, so use them in a place where they will not be affected by magnetic fields.
- If there is a magnetic material such as iron near the reed switch, it may cause it to malfunction.
2. Electrical wiring precautions
- Be careful when wiring the flow switch to prevent overcurrent from flowing through the reed switch due to poor earth wiring etc.
- Please use the flow switch as an alarm detector whenever possible.
If you use it in conjunction with other electrical equipment, please take into consideration the effects of malfunction. - The lifespan of the reed switch will be extended if the operating voltage and current are kept as low as possible.
(Normally, the switch can be operated approximately 1 million times under conditions of 100V 0.5A.)
3. Caution regarding switch operation due to changes in oil temperature and viscosity
- If the temperature or viscosity of the oil changes, the switch may not operate at the set flow rate or the switch operating flow rate
may change.
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