← Back to shop

sheen robotics
3612 Series Linear Ball Bearing (12mm ID x 21mm OD, 30mm Length) - 2 Pack
SKU: ZY-3612-1221-0030
Price on request
Ships in 7–10 working days
We haven’t published a price for this one yet — ask and we’ll quote you, usually same day.
- Delivery nationwide via The Courier Guy — R150 flat, free over R2,000
- Free collection from our warehouse — address at checkout
- Secure checkout — PayFast card payment or EFT
- Questions? WhatsApp us on +1 555 318 8599
Description
Competition eligibility
Legal for FIRST Tech Challenge (FTC) and FIRST Robotics Competition (FRC). Eligibility is set by each season's game manual — check the current rules before you compete.
As the name suggests, linear bearings are for linear motion. These specialty bearings contain tiny steel balls inside which cycle through the internal cage as they roll down a shaft. The seals on each end protect the internals from collecting debris, thus providing smooth movement with minimal friction.
ID 12mm
OD 21mm
Supplied as a pack of 2.
Technical drawing

Competition eligibility
| FIRST Tech Challenge (FTC) | Legal |
| FIRST Robotics Competition (FRC) | Legal |
Specifications
| Part number | 3612-1221-0030 |
| Units per pack | 2 |
| Length | 30mm |
| Material | 26.5g Each |
| Weight | 3612-1221-0030 |
Reviews
No reviews yet — be the first to review this product.
From the same brand

sheen robotics
5307 Series 8mm Pitch Steel Set-Screw Sprocket (8mm REX Bore, 10 Tooth)
R 98,86 Ships in 7–10 working days

sheen robotics
sheenbot∞ quadruped
R 10 179,00
No image
sheen robotics
sheenbot∞ Interactive Wall Kit – Speed-Tap Challenge
R 7 649,00 Ships in 7–10 working days
No image
sheen robotics
sheenbot∞ Interactive Wall Kit – Infrared Thermometer
R 6 149,00 Ships in 7–10 working days



