Gear Combination Kit – Hand-Crank Gears, Chain, Belt & Worm Drive STEM Model
Build a hand-cranked machine with spur and bevel gears, a chain drive, a belt drive and a worm gear, and watch motion travel through it.
Designed by Mematrix Lab
Description
Five kinds of mechanical drive on one base
This kit builds a hand-cranked mechanism on a grey modular base. Turn the crank and the motion travels through a worm gear, spur gears, bevel gears, a yellow chain between two sprockets and a belt between two pulleys. Every part is open to view, so kids can follow the rotation from the handle to the last wheel and see how each mechanism changes speed and direction.
Science it demonstrates
- Spur gears: meshing gears turn in opposite directions
- Bevel gears: turning rotation through a right angle
- Chain and belt drives: linking wheels that are far apart
- Worm gears: a big reduction in speed in a small space
- Gear ratios: why large and small wheels turn at different speeds
What you'll do
- Join the base plates and fit the supports and shafts
- Mount the gears, sprockets, pulleys and the worm
- Fit the chain, the drive belt and the crank handle
- Turn the crank slowly and trace how each wheel moves
Parts list
- Base plates, supports and shafts
- Spur and bevel gears, sprockets with chain links, pulleys with a drive belt, worm
- Crank handle and small fittings
Good to know
- Hand-cranked: no motor or batteries needed.
- Contains small parts. Recommended for ages 8 and up, with adult guidance.
Specs and Docs
- Model
- EK-D081
- Approx. size
- 18 × 12 × 8.5 cm
- Mechanisms
- Spur, bevel and worm gears; chain drive; belt drive
- Power
- Hand crank (no batteries needed)
- Material
- Plastic and metal
- Suggested age
- 8+ with adult guidance
Shipping
Standard shipping: $9.00 for the first item, +$1.80 for each additional item. Free shipping on orders over $260.
We ship worldwide, by default with economical international post (UPU / China Post small packet) to keep shipping costs low. Orders are usually handed to the carrier within 2–5 business days, and economical international post then takes about 10–30 business days to arrive; these are estimates, not guarantees. Delivery time depends on the destination and on postal and customs handling. If you need your order by a certain date, email us before ordering: faster shipping can be arranged, with the extra cost charged at the carrier's actual rate. Items that contain batteries or magnets are marked on their product page and ship by a special carrier line; some countries and regions cannot be reached by that line, and if yours is one of them we refund the order in full.
Customs & duties
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