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Tools & jigs
Headset bearing press drift set for 1 1/8 inch steerer
A pair of stepped drifts that turn an M8 threaded rod, two nuts and washers into a headset bearing press for integrated and zero-stack headsets. One drift steps 41.0 and 41.8 mm for IS41 and ZS44 bearings, the other 51.8 and 52 mm for IS52 and ZS56 lower bearings on tapered forks, each with a 9 mm centre bore and a 3 mm flange so the press acts on the bearing race, never the seal. Print them flat in PETG at 100 percent infill; the loads are low and mostly in compression. Open the ready-made model free, resize it on your phone or computer, then download a print-ready STL, 3MF or G-code sliced for your printer, free.Opening the ready-made model and downloading it as STL or 3MF are free, no card; AI changes use credits, from Maker at $7.99 a month.No printer? We print this part and ship it to your door. See its priceUpdated
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Adjust
Change its numbers in the viewer for free, or ask the AI in the chat: wall thickness, hole size, the thing it clips onto. AI changes use 2 credits per request (1 for a quick edit, 3 for a redesign), paid with a plan from Maker at $7.99 a month.3Print
Download a watertight STL or 3MF free, with your numbers and hand edits, or G-code sliced for your printer at the same price. After an AI change the download is included in every plan (4 credits without one).
Dimensions of the ready-made model (editable)
| Parameter | Value |
|---|---|
| centre bore diameter | 9 mm |
| flange diameter | 60 mm |
| flange thickness | 3 mm |
| height of each step | 6 mm |
| total drift height | 20 mm |
| chamfer size | 0.5 mm |
Example prompt
Design two stepped headset press drifts each 20 mm tall with a 9 mm centre bore: one with 41.0 mm and 41.8 mm steps 6 mm tall, the other with 51.8 mm and 52.0 mm steps, both on a 60 mm diameter, 3 mm thick flange with 0.5 mm chamfers.
Fit notes
Bearing outer diameters vary between Cane Creek, FSA and Acros, and a downloaded set may be a fraction big and mar the head tube. Tell SpeakCAD the bearing diameters and steerer size you have, preview the drifts in the browser, add a crown race step in the chat, then download the STL.
Questions people ask about a headset bearing press drift set for 1 1/8 inch steerer
A pair of stepped drifts that turn an M8 threaded rod, two nuts and washers into a headset bearing press for integrated and zero-stack headsets. One drift steps 41.0 and 41.8 mm for IS41 and ZS44 bearings, the other 51.8 and 52 mm for IS52 and ZS56 lower bearings on tapered forks, each with a 9 mm centre bore and a 3 mm flange so the press acts on the bearing race, never the seal. Print them flat in PETG at 100 percent infill; the loads are low and mostly in compression.
Click Open it free on this page and create a free account (no card): the ready-made model opens in your browser, on your phone or computer, nothing to install. Change its numbers in the viewer for free and download a watertight STL or 3MF free, or G-code sliced for your printer at the same price. An AI change in the chat uses 2 credits per request (3 for a redesign), and the download after it is included in every plan (4 credits without one). Start with Maker: 50 credits a month for $7.99, cancel anytime.
On this page: open the ready-made model free in a SpeakCAD account (no card), change any dimension in the viewer, then download the STL or 3MF free, or G-code sliced for your printer at the same price.
A shared STL is modelled for someone else's measurements. Here you open the ready-made model free, change it to your measurements in the viewer, then download a file sized for the part you actually own, free as STL or 3MF.
Yes. SpeakCAD slices the part on its servers with OrcaSlicer and your printer's official profile (380+ printers, including Bambu Lab, Prusa, Creality and Elegoo), and you download the G-code (a sliced .gcode.3mf for Bambu Lab printers). G-code sliced for your printer costs the same as the STL: included in every plan, free for a part you shaped by hand, 4 credits without a plan for a part with AI work in it. Pick your printer on the printers page to see its profile.
No. SpeakCAD runs in the browser on your phone or computer: the chat, the 3D engine and the live viewer load in the tab. The only file you download is the finished STL, 3MF or sliced G-code.
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