Linkage & Bearing Pack – Adjustable Ball-End Linkages, Aluminium Shaft Support Blocks and 2 mm Ball Bearings
4 adjustable ball-end linkages (41–125 mm), 4 aluminium shaft support blocks for 8 and 10 mm shafts and 20 miniature 2 mm bearings.
Designed by innoelement
Description
Push rods, shaft supports and bearings for small machines
Three kinds of metal motion parts that are hard to print well. Adjustable ball-end linkages carry a servo horn's movement to a lever, steering arm or flap. Aluminium shaft support blocks hold an 8 or 10 mm shaft or rod firmly upright on a base plate. Miniature ball bearings let 2 mm axles spin freely in wheels, gears and printed frames.
What's in the pack
| Part | Contents | Qty |
|---|---|---|
| Ball-end linkages | Nos. 1 to 4, one of each length | 4 |
| Shaft support blocks | 8 mm × 2, 10 mm × 2 | 4 |
| Miniature ball bearings | 2 × 5 × 2.5 mm | 20 |
| Total | 28 |
Adjustable ball-end linkages, one of each length

| No. | Length (adjustable) | Weight |
|---|---|---|
| 1 | 105 to 125 mm | about 10.8 g |
| 2 | 73 to 85 mm | about 10 g |
| 3 | 45 to 57 mm | about 5.4 g |
| 4 | 41 to 53 mm | about 5.5 g |
Each linkage is a threaded stainless-steel turnbuckle with an anodised aluminium ball end at each side and lock nuts. Turn the middle to set the length, then lock the nuts. The ball ends have 3 mm holes for an M3 screw to a servo horn or lever. The colour is usually sky blue.
Aluminium shaft support blocks, 2 of each

| Bore | Height | Shaft centre height | Base | Weight | Qty |
|---|---|---|---|---|---|
| 8 mm | 33 mm | 20 mm | 42 × 14 mm | about 26 g | 2 |
| 10 mm | 33 mm | 20 mm | 42 × 14 mm | about 26 g | 2 |
A vertical block with a slotted bore that clamps a shaft, rod or the outside of a bearing with a side screw (use an M4 × 10 screw, not included). Two holes in the base screw it to a plate or frame.
Miniature ball bearings, 20

| Bore | Outside diameter | Width | Qty |
|---|---|---|---|
| 2 mm | 5 mm | 2.5 mm | 20 |
Shielded steel bearings for 2 mm axles, such as the 2 mm shafts in our Micro Shaft & Coupler Pack. Press them into a printed or drilled 5 mm hole. If a shaft is a tight fit, polish it lightly with fine sandpaper rather than forcing it in.
Good to know
- Screws for the support blocks and the linkages' ball ends are not included.
- Sizes are the supplier's measurements and can differ slightly.
- About 0.2 kg packed, so there is no weight surcharge on this pack.
- Contains small parts. Not a toy; keep away from young children.
Specs and Docs
- Parts
- 28
- Linkages
- 41–125 mm, 3 mm ball holes
- Bearings
- 2 × 5 × 2.5 mm
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
Import duties, taxes and customs requirements depend on the destination country, the shipping route and the local customs office, so we cannot say in advance whether any will apply to your parcel. Customs may hold a parcel, ask for more information, or ask for duties or taxes to be paid, even when the declared value is correct. If you have a question about your country, email us before ordering.
See our shipping & returns policy.