Brass Cutlass Bearing - 3.0" x 4.0" x 12" - IBSF24
Genuine Exalto water-lubricated brass cutlass bearing for marine propeller shafts. Size: 3" x 4" x 12". Imperial sizing.
Specifications
- Product code (SKU)
IBSF24- Brand
- Exalto
- Manufactured in
- United Kingdom
- Material
- Brass
- Unit system
- Imperial
- Nominal size
- 3" x 4" x 12"
- Inside diameter (I/D)
- 3.0"
- Outside diameter (O/D)
- 4.0"
- Length
- 12"
- I/D tolerance
- 3.004 – 3.008"
- O/D tolerance
- 4.0014 – 4.0023"
About this bearing
The IBSF24 is a genuine Exalto brass cutlass bearing from the Standard Marine Range, manufactured in the United Kingdom to OEM tolerances. Nominal size is 3" x 4" x 12". It fits a propeller shaft measuring 3.004 – 3.008" and seats in a stern tube housing of 4.0014 – 4.0023". Overall length is 12".
Exalto brass-shelled cutlass bearings pair a phenolic liner with a naval brass outer shell. They're chosen when the stern tube bore is slightly loose or worn, giving the mechanical grip of a metal-to-metal interference fit that a bare phenolic or rubber bearing couldn't achieve. Heavier and more expensive, but extremely long-lived.
Every Exalto Standard Marine Range bearing is produced in the UK using the same manufacturing processes trusted by boatyards and refit shops worldwide. We hold Australian stock and ship nationwide for free, so you're ordering from a local warehouse instead of waiting on international freight.
Need help sizing? See the measuring guide for step-by-step instructions, or contact us and we'll reply within one business day.