Gearbox

Gearbox Options

Beta Marine offer the following gearbox options and reduction ratios for yachts. If you have a specific requirement or heavy duty application, e.g: fishing boats, then please ask and we will be pleased to discuss it with you.We can also mount your old / existing gearbox on a new Beta engine, if you wish to send it to us. For futher information on a specific gearbox, please look at the individual manufacturer’s websites for more information:

Gearbox Information Downloads

If you have any questions, please do not hesitate to Contact Us.

The standard gearbox is shown as ‘Std.’ and the alternative or upgrade gearboxes are shown as ‘Extra’. Click here for a printable version of the tables below – Informational Gearbox Sheet [PDF].

Gearbox Options Small Beta Engine
Gearbox Ratio(s) Beta 10 Beta 14 Beta 16 Beta 20 Beta 25 Beta 30 Beta 35 Beta 38
Technodrive (Mechanical Gearbox)
TMC 40 1.50:1
2.00:1
2.60:1
Std. Std. Std. Std. Std. Std.
TMC 60 2.00:1
2.45:1
2.83:1
Extra Extra Extra Extra Extra Std. Std.
Oil cooler for LH in ahead Extra Extra Extra Extra Extra Extra Extra
TMC 60A 2.00:1
2.45:1
Extra Extra Extra Extra Extra Extra Extra
PRM Marine (Mechanical Gearbox)
PRM 80 2.04:1
2.50:1
Std. Std. Std. Std. Std. Std.
PRM 120 2.04:1
2.50:1
2.94:1
Extra Extra Extra Extra Extra Std. Std.
PRM Marine (Hydraulic Gearbox)
PRM 150 2.09:1
2.82:1
Extra Extra Std. Std. Std.
PRM 260 1.96:1
2.94:1
Extra Extra Extra
ZF V Drive (Mechanical Gearbox)
ZF15 MIV 2.13:1
2.64:1
3.00:1
Std. Std. Std. Std. Std. Std. Std.
Gearbox Options Mid Beta Engine
Gearbox Ratio(s) Beta 43 Beta 50 Beta 60 Beta 75 Beta 90 Beta 105 Beta 150
Technodrive (Mechanical Gearbox)
TMC 60 2.00:1
2.45:1
Std.
TMC 60A 2.00:1
2.45:1
Std.
Oil cooler for LH in ahead Extra
TMC 260 2.00:1
2.47:1
2.88:1
Extra Std. Std.
Technodrive (Hydraulic Gearbox)
TM 345 2.00:1
2.47:1
Extra Extra Extra Std.
TM 345A 2.00:1
2.47:1
Extra Extra Extra Extra
Trolling Valve Kit for TM 345 Extra Extra Extra Extra
TM 93 2.09:1
2.40:1
2.77:1
Extra Std. Std.
TM 93A 2.09:1
2.40:1
Extra Extra Extra
Trolling Valve Kit for TM 93 Extra Extra Extra
PRM Marine (Hydraulic Gearbox)
PRM 150 2.09:1
2.83:1
Std. Std.
PRM 260 1.96:1
2.94:1
Extra Extra Std. Std. Std. Std.
PRM 500 1.94:1
2.57:1
2.90:1
Extra Extra Extra Extra Std.
PRM 750 1.94:1
2.57:1
2.90:1
3.94:1
Extra
PRM 1000 2.86:1
4.00:1
Extra
Hydraulic ‘Short Shift’ Extra Extra Extra Extra Extra Extra Extra
ZF (Mechanical Gearbox)
ZF 25M 1.88:1
2.74:1
Std. Std. Std.
ZF (Hydraulic Gearbox)
ZF 25 1.97:1
2.80:1
Std. Std. Std. Std.
ZF 25A 1.92:1
2.29:1
2.71:1
Std. Std. Std. Std.
ZF 45-1 2.20:1
2.50:1
3.00:1
Extra Extra Std. Std.
ZF 45A 2.03:1
2.43:1
Extra Extra Std. Std.
ZF (V Drive Gearbox)
ZF 15 MIV 2.13:1
2.72:1
Std. Std.
ZF 63 IV 1.99:1
2.48:1
Extra Extra Std. Std. Std. Std.