Formada3D Sensor brackets, suction-cup arms and ISO 9409-1 tool-flange adapters for 2020 extrusion
Small robotics fittings for 2020 / 2040 aluminium extrusion and robot tool flanges, printed to order in PETG in our Melbourne workshop. Four sensor and limit-switch brackets (V-type lever microswitch, SS-5 / D2F subminiature, M12 inductive and GP2Y0A21-type IR distance) share one M5 T-nut base. Two suction-cup arms carry vacuum cups by their threaded stems. And two sizes of ISO 9409-1 tool-flange adapter (50-4-M6 and 31.5-4-M5) get a cobot onto 2020 extrusion or a gripper-plate hole grid while you prototype, before a metal adapter is machined.
From A$9 for the single sensor bracket. Printed to order in Melbourne and shipped Australia-wide; we confirm the final price and lead time before anything is printed.
On the quote page choose Request a quote (no file needed) and name this part and the option you want.
Order status. The four sensor brackets, the cup arms and the flange adapters can be ordered now. For KW12-type switches, whose hole pitch is not published, we supply the pitch coupon with the bracket so you can check the fit first.
What does it look like in use?
Renders are computer images of our own design, made from the same model we print. Photos are of our own first prints.
Real photos
Specifications: material, size and what it fits
| Spec | Detail |
|---|---|
| Material | PETG, 0.24 mm layers on a 0.6 mm nozzle, at least 4 walls and 25 % infill (40 % on the flange adapters). PETG-CF or PA-CF on request for stiffness |
| Sensor brackets | Four brackets with a 20 mm wide, 4 mm base with an M5 slot (+-3 mm along the bar) and a 4 mm upright plate with two gussets. V-type lever microswitch: 38 x 20 x 30 mm, 2 x M3 slots on the 22.2 / 10.3 mm pattern. Subminiature: 34 x 20 x 30 mm, SS-5 type (2 x M2.3 at 9.5 mm) above D2F type (2 x M2 at 6.5 mm). M12 inductive: 34 x 20 x 34 mm, 12.5 mm hole, clamped by the sensor's own nuts. IR distance: 46 x 20 x 26 mm, 2 x M3 at 37 mm, connector window |
| KW12 pitch coupon | 40 x 34 x 3 mm plate with 3.2 mm hole pairs at 21.7 / 22.2 / 22.7 mm, for KW12-type switches whose hole pitch is not published. Included with the bracket kit |
| Suction-cup arms | L-arms for the side of a 2020 bar (2 x M5 T-nuts, 20 mm apart), edge ribs and gussets. 3-hole arm 89 x 34 x 32 mm: 5.5 mm (M5), 6.6 mm (M6) and 10.2 mm (G1/8) stem holes at 22 / 47 / 72 mm from the bar, 4 mm web. Plunger arm 49 x 34 x 32 mm: 16.5 mm hole for M16x1 spring plungers, 6 mm web |
| ISO 9409-1 adapters | 50-4-M6 to 2020: dia 63 x 17 mm, 4 x M6 counterbored, pilot boss into the 31.5 mm recess, 6 mm dowel hole, 4 x M5 for T-nuts in a 2020 bar along X or Y. 31.5-4-M5 to 2020: dia 50 x 13 mm, 4 x M5 counterbored, pilot into the 20 mm recess, 5 mm dowel hole, 2 x M5. Gripper plates: 90 x 90 x 17 mm with 16 x M4 on a 20 mm grid (50 size) and 70 x 70 x 13 mm with 12 x M4 (31.5 size). Pilot clearance 0.15 mm per side |
| Fits | Robot tool flanges built to ISO 9409-1-50-4-M6 (for example UR e-Series and xArm, per their published flange drawings) or ISO 9409-1-31.5-4-M5 (the Robotiq Hand-E coupling pattern). V-type lever microswitches on the 22.2 mm pattern (for example Omron V series), SS-5 / D2F subminiature switches, M12 inductive sensors (LJ12A3-4 type), GP2Y0A21-type IR distance sensors. Vacuum cups with M5, M6 or G1/8 male stems, and M16x1 spring plungers. Any 20-series slot: 2020, 2040 and 4040 faces |
| Hardware | Not included. Brackets: M5 x 8 + T-nut each; V-type switch M3 x 20 + nuts; SS-5 M2.3 x 10 and D2F M2 x 8 thread-forming; IR sensor M3 x 6; the M12 sensor uses its own nuts. Cup arms: 2 x M5 x 10 + T-nuts and a lock nut per cup stem (stem at least web + nut long). Adapters: 50 size 4 x M6 x 12 (8.8) + a 6 x 14 dowel pin; 31.5 size 4 x M5 x 10 + a 5 x 12 dowel pin; M5 x 12 + T-nuts to the bar; M4 screws + nuts for the plates |
| Printing | No supports: brackets and arms with the base on the bed, adapters with the tool face on the bed so the counterbores bridge cleanly. All holes are 45-degree teardrops where they face sideways |
Universal Robots, UFactory, xArm, Robotiq, Omron, Sharp, Piab, Schmalz and SMC are trademarks of their owners. These parts are independent accessories, not affiliated with or endorsed by them.
How much does it cost?
Guide prices for printed parts, in Australian dollars. Shipping is extra; we confirm the final price, including any business minimum, before printing. Bulk and custom sizes are quoted per job.
| Option | From |
|---|---|
| Sensor or limit-switch bracket, single | A$9 |
| Suction-cup arm, M16x1 spring plunger | A$14 |
| Suction-cup arm, M5 / M6 / G1/8 | A$16 |
| Homing kit: 3 brackets (V-type or subminiature) | A$22 |
| Pair of suction-cup arms | A$26 |
| Sensor bracket kit: all four brackets + KW12 pitch coupon | A$29 |
| ISO 9409-1-31.5-4-M5 flange to 2020 adapter | A$29 |
| ISO 9409-1-50-4-M6 flange to 2020 adapter | A$35 |
| Gripper plate, 31.5 size (70 x 70 mm) | A$39 |
| Gripper plate, 50 size (90 x 90 mm) | A$49 |
| Lab bundle: both 50 size adapters (2020 + gripper plate) | A$75 |
Who it's for
Robotics integrators and university cobot labs prototyping end effectors, pick-and-place and packaging builders, and printer, CNC and gantry builders who need homing switches and sensors on extrusion.
Safety & use
Installation & use. Designed for the uses described on this page only. Fixings are not included: use the sizes listed, check they are tight before use, and check the parts regularly for wear or damage. Not for safety-critical or overhead load-bearing use. Damage caused by misuse, modification or overloading is not covered.
Robot tool-flange adapters. Printed adapters are for light tooling, prototyping and education, not production payloads. Keep tool mass and moments well inside what a plastic part can carry, follow your robot maker's tool-mounting instructions and your own risk assessment, check screw tightness before each use, and use a metal adapter for production. We print them with at least 4 walls and 40 % infill. They are made to the ISO 9409-1 hole pattern; they are not certified to it or to any other standard.
Limit switches. The brackets are for homing and positioning only, not for safety stops. Use rated safety devices for guarding.
This doesn't affect your rights under the Australian Consumer Law.
Common questions
Which robots do the ISO 9409-1 adapters fit?
Tool flanges built to ISO 9409-1-50-4-M6 (50 mm bolt circle, 4 x M6, 6 mm dowel), as used by UR e-Series and xArm according to their published flange drawings, and ISO 9409-1-31.5-4-M5 (31.5 mm bolt circle, 4 x M5, 5 mm dowel), the Robotiq Hand-E coupling pattern. A pilot boss and a dowel pin locate the adapter; the screws and pin are not included. Check your robot's flange drawing before ordering.
Can a 3D printed flange adapter carry my tool?
It is meant for light tools, prototyping and teaching. We print the adapters in PETG with at least 4 walls and 40 % infill (PETG-CF or PA-CF on request), but a plastic part carries far less than a machined one. Keep the tool mass and moments well inside its capability, follow the robot maker's tool-mounting instructions and use a metal adapter for production payloads.
Which switches and sensors fit the brackets?
V-type lever microswitches with the 22.2 mm hole pattern (for example Omron V series), SS-5 and D2F subminiature switches, M12 threaded inductive sensors such as the LJ12A3-4 type, and GP2Y0A21-type IR distance sensors with 37 mm holes. Every bracket has the same 20 mm wide base with an M5 slot for a T-nut in 2020, 2040 or 4040 extrusion.
What about KW12 or KW11-type switches?
Their hole pitch is not published, so the kit includes a 3 mm pitch coupon with hole pairs at 21.7, 22.2 and 22.7 mm. Try your switch's screws in each pair; the V-type bracket's slots cover 21.2-23.2 mm, and we can set the bracket to the pair that fits.
How do the suction-cup arms mount?
Each arm bolts to the side of a 2020 bar with two M5 T-nuts 20 mm apart. The cup stem passes through the arm and your lock nut clamps it on top. The holes are plain clearance holes: 5.5 mm for M5, 6.6 mm for M6 and 10.2 mm for G1/8 stems, or 16.5 mm for M16x1 spring plungers. The stem must be longer than the 4 mm web (6 mm on the plunger arm) plus the nut.
How do I order?
Use Get a quote and choose Request a quote, or send an enquiry naming the brackets, arms or adapter sizes and the quantity. We confirm the price and lead time before anything is printed. Other flange sizes and hole grids can be quoted from your drawing.
More from the parts catalogue
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Standard-servo bracket and a camera mount for 2020 aluminium extrusion, in PETG.
Sealed sensor enclosure (S / M / L), O-ring lid
Outdoor-style project boxes for ESP32 and LoRa sensor nodes: O-ring lid, cable-gland ports.
Last updated 11 October 2026.