Parts catalogue · Robotics · Melbourne

Adaptive soft gripper finger kit (fin-ray style, TPU)

Fin-ray style compliant fingers that bend around the object when they close on it, so eggs, fruit and bottles are held without crushing. Printed to order in TPU 95A in our Melbourne workshop (85A and 70A-class on request), sold in pairs or as a three-size kit. Every size uses the same mount: 2 x M3 at 10 mm pitch, counterbored, for any parallel gripper jaw plate up to 12 mm thick.

From A$39Made to order

From A$39 for the pair, egg size. Printed to order in Melbourne and shipped Australia-wide; we confirm the final price and lead time before anything is printed.

Get a quote → Email us about this part

On the quote page choose Request a quote (no file needed) and name this part and the option you want.

Three orange 3D printed TPU soft gripper fingers in egg, fruit and bottle sizes, each with tilted internal ribs and two M3 mounting holes — Studio render of the three finger sizes (egg, fruit, bottle).

What does it look like in use?

Renders are computer images of our own design, made from the same model we print. Photos of real prints will be added after the first production run.

Two orange fin-ray style soft fingers on a grey parallel gripper, wrapped around a white 70 mm cylinder — **In use (render)**Render: a pair of bottle-size fingers holding a 70 mm cylinder. The gripper and cylinder are generic stand-ins.

Specifications: material, size and what it fits

Spec	Detail
Material	TPU 95A (85A or 70A-class on request, with thicker walls for a similar feel)
Sizes	Egg: 55 x 22 x 20 mm, for objects 40-55 mm across. Fruit: 80 x 28 x 25 mm, for 60-85 mm. Bottle: 100 x 32 x 30 mm, for bottles, cans and jars 55-95 mm across
Mount	2 x M3 at 10 mm pitch, centred, counterbored from the contact face. Fits any parallel gripper jaw plate up to 12 mm thick
Fits	Parallel grippers with a flat jaw plate you can drill for 2 x M3 (no vendor flange is modelled)
Hardware	Not included. Per finger: 2 x M3 socket-cap screws, 25-35 mm long (jaw thickness + 22 / 28 / 32 mm block)
Printing	0.20 mm layers, walls 1.2 mm, ribs 0.9 mm. Printed on its side so every fin wall is vertical: no supports, no support marks

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
Pair, egg size	A$39
Pair, fruit size	A$45
Pair, bottle size	A$55
Full kit: 3 sizes x 2 fingers (6 fingers)	A$119
85A grade	+A$10 per pair
Custom size (your object diameter and jaw pitch)	+A$30 one-off

Who it's for

Ag and harvest robots, vertical-farm pick cells, university robot labs and integrators who need a soft jaw for a parallel gripper.

Get a quote →Bulk or custom enquiry

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.

Food. TPU 95A is not a certified food-contact material. If the fingers handle food, check it against your own food-safety requirements.

This doesn't affect your rights under the Australian Consumer Law.

FAQ

Common questions

What is a fin-ray style gripper finger?

It is a soft finger made of two thin walls joined by tilted ribs. When the contact face presses on an object, the tip bends towards it, so the finger wraps around the shape instead of pinching it. That makes it good for eggs, fruit and other delicate or irregular items.

Which size do I need?

Pick by object diameter: egg size for 40-55 mm, fruit size for 60-85 mm, bottle size for bottles, cans and jars 55-95 mm across. A gripper uses two fingers, so they are sold in pairs. Custom lengths for other object sizes are A$30 extra, one-off.

How do the fingers mount?

All three sizes share one mount: 2 x M3 at 10 mm pitch, counterbored from the contact face, for a jaw plate up to 12 mm thick. Screws are not included; use M3 socket-cap screws 25-35 mm long.

Can you make them softer or stiffer?

Yes. The standard set is TPU 95A. An 85A grade is A$10 extra per pair, and 70A-class is available on request. Softer grades are printed with thicker walls so they keep a similar grip.

How do I order?

Use Get a quote and choose Request a quote, or send an enquiry with the size, grade and quantity. We confirm the price and lead time before anything is printed.