Cutlass Bearings for a 45 mm Shaft
We list six Exalto cutlass bearings for a 45 mm (1.772") propeller shaft, in phenolic, brass and GRP. They fit housing bores of 2-3/8" (60.33 mm) and 65 mm (2.559"), and every one is 180 mm (7.087") long. The nominal wall thickness, half the difference between housing bore and shaft, runs from 7.66 mm to 10 mm.
Of these, three are in Australian stock (two phenolic and one brass), with same-day dispatch on orders placed by 2pm AEST on a business day. You can pre-order the other three, with dispatch estimated at 3 to 4 weeks. Prices run from $300.00 (the phenolic MIPSF45) to $485.00 including GST, and Express Post delivery within Australia is free.
Three of these are metric/imperial: the shaft bore and length are metric and the housing diameter is in inches.
A 1-3/4" (44.45 mm) shaft is only 0.55 mm smaller, 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 1-3/4" shaft.
6 bearings for a 45 mm shaft
| Code | Housing bore | Length | Material | Availability | Price inc GST | Order |
|---|---|---|---|---|---|---|
MIPSF45 |
2-3/8" 60.33 mm | 180 mm 7.087" | Phenolic | In stock | $300.00 | |
MIBSF45 |
2-3/8" 60.33 mm | 180 mm 7.087" | Brass | In stock | $470.00 | |
MIGSF45 |
2-3/8" 60.33 mm | 180 mm 7.087" | GRP | Dispatch in 3 to 4 weeks | $355.00 | |
MPSF45 |
65 mm 2.559" | 180 mm 7.087" | Phenolic | In stock | $325.00 | |
MBSF45 |
65 mm 2.559" | 180 mm 7.087" | Brass | Dispatch in 3 to 4 weeks | $485.00 | |
MGSF45 |
65 mm 2.559" | 180 mm 7.087" | GRP | Dispatch in 3 to 4 weeks | $390.00 |
How to choose a bearing for a 45 mm shaft
Measure the housing bore and the length of the bearing you are replacing, then find that combination below. Bearings that share a housing bore and length differ in shell material, tolerances and availability.
- 2-3/8" (60.33 mm) housing, 180 mm (7.087") long: phenolic MIPSF45 (in stock, $300.00), brass MIBSF45 (in stock, $470.00), GRP MIGSF45 (dispatch in 3 to 4 weeks, $355.00)
- 65 mm (2.559") housing, 180 mm (7.087") long: phenolic MPSF45 (in stock, $325.00), brass MBSF45 (dispatch in 3 to 4 weeks, $485.00), GRP MGSF45 (dispatch in 3 to 4 weeks, $390.00)
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.