This is a reproduction 3D printed idler gear. It is a small gear about the size of a pencil eraser, it drives the idler tire to operate the take up reel in the cassette deck. It has a tendency to crack and then loses it's tension on the shaft of the pully that drives it.
This gear is available in 2-types of materials. The white version displayed is printed using resin. It has a nice smooth finish. The other version is printed using nylon with a different manufacturing process. That one is black and has a textured finish. Both versions are strong but the white version is more brittle so care should be exercised when installing to not force it onto the metal spindle shaft. The center hole should be snug fit and may work as-is but might require some adhesive (drop of superglue with activator should suffice) if not sufficiently snug. If the fit is too tight, you may need to ream out the hole with an appropriate sized micro-drill bit. The original shaft is 2mm, but slight undersized is desired unless you plan to apply adhesive. When you place the order, make sure you select the desired finish or we will select one for you.
Tested to fit the following boomboxes:
GE Blockbuster (3-5259A)
GE 3-5258A
Realistic SCR-8 (14-778)
May fit others, we only tested on these
* USA sales only. If you are an international customer, contact us for shipping options, or purchase "print to order" versions at Shapeways as they have factories in USA and Europe Shapeways 3D print store.
Important note regarding quantity purchases: If you wish to purchase more than 1pc, please contact us so we can combine shipping. Our store interface is not intelligent enough to combine shipping and therefore, each gear will trigger a separate shipping charge if you do it through the interface.
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