HISTORY:
You never know what I will come up with next and sometimes there are "little surprises"! Actually I knew I had these for a LONG time but once again it was one of those "projects" which never went anywhere, a thought bubble of designing something but the bubble remained just that and now I have popped the bubble and hope that someone else can make use of this magnetic clutch.
These are NEW spare parts intended for a RICOH photocopier of days gone by ...
Small, compact and they work a treat but only someone who thinks "outside the box" or laterally may come up with a use for these - you certainly wouldn't be servicing a RICOH photocopier these days!
Please read on if you are intrigued ...
I am very much "into" sustainability and even an insignificant electromagnetic device such as this represents a reasonable amount of embedded energy and to waste that embedded energy is a very bad thing, how crazy is it to create something (dig the elements out of the ground, manufacture them, pack them up) and then just turn around and bury them back in the ground again - it defies logic ...
What is embedded energy?
Embedded energy is a measurement of the total energy that was used to create a component, a module or a complete piece of equipment originally.
HERE is some more information about Ee
DAIKEN Co. Ltd (JAPAN) - Magnetic Clutch Assembly
Manufacturer: Daiken
Made in Japan
RICOH Part # AX20-0117
DAIKEN Part # MCA-35A
Design operating voltage: 24V DC
Two part clutch, metal electromagnetic component and separate nylon gearing
Central hole through both parts for support
DIMENSIONS:
Complete clutch (Nylon gear up against the metal electromagnetic clutch): 40.75mm length x 35.5mm (clutch diameter) 39mm nylon gear diameter
The main metal electromagnetic clutch has a "clip" to hold it securely on the original equipment, there are no mounting holes or bolts.
Central shaft hole is 7.75mm diameter and uniform from one end of the clutch to the other
The nylon gear has a copper sleeve fitted so the inside of the shaft is an all metal contact area
Two short 90mm flying leads fitted with a male plug - in most cases just cut off the plug
WEIGHT:
Complete assembly: 105g
TESTING/WHAT DOES IT DO?
Applied 24V DC for testing
The correct polarity MUST be observed, I accidently reversed the supply and my power supply went into "current limit" - meaning all was not good! I assume there is at least a protection diode inside that clutch housing, something is creating what appears to be a "dead short"
The correct polarity is: White is negative & Blue is positive
Normal operation: Current drawn is 150mA
At power on you will hear a "clunk" from inside the electromagnetic clutch - this is normal.
The White nylon gear butts up against the clutch and with NO power applied to the clutch, turns freely and independently of the clutch shaft
Apply power and the story changes completely, now the nylon gear and the central shaft of the clutch are in "lock step" with each other so that any rotation of the clutch shaft will also rotate the nylon gearing.
The union between the clutch and the nylon gear is extremely strong and in fact I could not separate them manually (while they are butted against each other) but the magnetic field rapidly drops away when there is a separation gap.
COSMETIC CONDITION:
NEW
CLEAN
NO body damage
NO broken parts
Smooth rotation
Always stored in the original spare parts supplier packaging and this how they will be supplied from me
