> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# 2910 Series Aluminum Clamping Collar (8mm REX ID x 20mm OD, 9mm Length)

**Type:** Product page · **SKU:** GB-2910-0920-4008 · **Brand:** [goBilda](https://core-electronics.com.au/brands/gobilda)
**Page:** https://core-electronics.com.au/2910-series-aluminum-clamping-collar-8mm-rex-id-x-20mm-od-9mm-length.html ([markdown](https://core-electronics.com.au/2910-series-aluminum-clamping-collar-8mm-rex-id-x-20mm-od-9mm-length.html.md))

This 8mm REX Bore Clamping Collar has a profile-matched bore in order to maximize holding force on the 8mm REX Shaft. The 11mm diameter,.....

## Pricing

- **Price:** $8.45 (inc GST) — $7.68 AUD, exc GST
- **Quantity discounts:** 10+ $7.30 (exc GST) · 25+ $6.91 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Aug 21 and Aug 24.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=GB-2910-0920-4008:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart.
- **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/GB-2910-0920-4008:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.)
- **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there.
- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

This 8mm REX™ Bore Clamping Collar has a profile-matched bore in order to maximize holding force on the 8mm REX™ Shaft. The 11mm diameter, 0.5mm protrusion on one side of the collar negates the need for a shim or shaft spacer between the collar and a bearing. The protrusion will rest against the inner-race of the bearing, creating a little necessary space between the collar and the outer-race. The M4 pinch bolt uses the same tool as you’ll use with 2800 Series Socket Head Screws that we use throughout the build system.

### Downloads

- [ STEP File ](https://core-electronics.com.au/attachments/localcontent/2910-0920-4008_377226543b0.zip)

### Specs

| Weight | 7.3g |
|---|---|
| Material | Aluminum |
| Finish | Clear Anodized |

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/G/B/GB-2910-0920-4008-1.jpg)