Cutlass Bearings for a 75 mm Shaft
We list three Exalto cutlass bearings for a 75 mm (2.953") propeller shaft, in phenolic, brass and GRP. They fit a 95 mm (3.74") housing bore, and every one is 300 mm (11.811") long. The nominal wall is 10 mm thick: half the difference between housing bore and shaft.
Of these, two are in Australian stock (one phenolic and one brass), with same-day dispatch on orders placed by 2pm AEST on a business day. You can pre-order the other one, with dispatch estimated at 3 to 4 weeks. Prices run from $495.00 (the phenolic MPSF75) to $1,125.00 including GST, and Express Post delivery within Australia is free.
A 3" (76.2 mm) shaft is only 1.2 mm larger, but its bearings are a different nominal size and are not interchangeable with these. Check which unit your shaft was made to before ordering, or see the bearings for a 3" shaft.
3 bearings for a 75 mm shaft
How to choose a bearing for a 75 mm shaft
Measure the housing bore and the length of the bearing you are replacing, then find that combination below. Every bearing here shares one housing bore and length; they differ in shell material, tolerances and availability.
- 95 mm (3.74") housing, 300 mm (11.811") long: phenolic MPSF75 (in stock, $495.00), brass MBSF75 (in stock, $1,125.00), GRP MGSF75 (dispatch in 3 to 4 weeks, $625.00)
Phenolic, brass and GRP describe the outer shell, and each has a grooved nitrile rubber lining. The non-metallic phenolic shell avoids galvanic corrosion between the shell and a metal housing. Exalto advises against fitting brass directly into steel or aluminium housings. Exalto identifies GRP as suitable for steel and aluminium stern tubes as well as compatible non-metallic housings. More about each: phenolic cutlass bearings, brass cutlass bearings and GRP cutlass bearings.
Matching sizes is the first check, not the last: confirm the shell material, the housing's condition and the retention method for your boat. The measuring guide explains what to record, or contact us with your measurements.