Cutlass Bearings for a 1-5/8" Shaft
We list two Exalto cutlass bearings for a 1-5/8" (41.28 mm) propeller shaft, in phenolic and GRP. They fit a 2-5/8" (66.68 mm) housing bore, and both are 6-1/2" (165.1 mm) long. The nominal wall is 12.7 mm thick: half the difference between housing bore and shaft.
Of these, one is in Australian stock (the GRP IGSF13+4), 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 $270.00 (the phenolic IPSF13+4) to $275.00 including GST, and Express Post delivery within Australia is free.
A 40 mm (1.575") shaft is only 1.28 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 40 mm shaft.
2 bearings for a 1-5/8" shaft
How to choose a bearing for a 1-5/8" 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.
- 2-5/8" (66.68 mm) housing, 6-1/2" (165.1 mm) long: phenolic IPSF13+4 (dispatch in 3 to 4 weeks, $270.00), GRP IGSF13+4 (in stock, $275.00)
Phenolic 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 identifies GRP as suitable for steel and aluminium stern tubes as well as compatible non-metallic housings. More about each: phenolic 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.