Description
Overview
These Argo V drive gears deliver the 0–26% ratio options required to tune an Argo V-drive for different hull and engine setups. Each gear measures 1 1/4 inch wide and uses a quarter key interface to suit the original cast alloy case. Because the series covers every percentage step from zero through twenty-six, workshops can always match a replacement part to existing service records. In Argomarine’s range, the sequence begins at AM2000 (0%) and continues up to AM2026 (26%), ensuring straightforward identification.
Features
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Ratio options from 0–26% for precise driveline tuning.
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1 1/4 inch width provides stable gear mesh and consistent load transfer.
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Quarter key drive secures positive location in the original cast alloy case.
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EN36A steel construction offers long service life with superior wear resistance.
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Clear part numbering (AM2000–AM2026), therefore reducing the chance of mis-ordering.
Specifications and Materials
The Argo V drive gears use EN36A case-hardening alloy steel, which is widely recognised in marine engineering. After heat treatment, EN36A develops a hard wear surface while retaining a strong core, and this combination makes it ideal for gearbox gears. The width is fixed at 1 1/4 inch, while the quarter key slot ensures compatibility with the original cast alloy case. For background on EN36A properties, see this technical overview: https://www.azom.com/article.aspx?ArticleID=6536. Consequently, technicians can evaluate expected hardness and machining behaviour before installation.
Compatibility and Fitment
These gears fit directly into Argo V-drive gearboxes designed for 1 1/4 inch wide gears with a quarter key drive. In addition, the percentage figure must always be matched to the gearbox build sheet to preserve correct propeller speed. The available part numbers include AM2000 (0%), AM2003 (3%), AM2005 (5%), AM2008 (8%), AM2011 (11%), AM2014 (14%), AM2017 (17%), AM2020 (20%), AM2023 (23%), and AM2026 (26%). Therefore, buyers can select the exact gear to replace a worn component or adjust driveline performance.
Compliance and Safety
Always follow gearbox manufacturer procedures for setting backlash, contact pattern, and bearing pre-load. Moreover, use gloves and eye protection when handling heavy gears. Check keyways for fretting or distortion, and replace both the gear and key if either shows wear. As a result, long-term reliability improves and costly secondary failures are avoided.
Marine Applications
These Argo V drive gears suit both petrol and diesel inboard vessels that rely on compact V-drive layouts. Because gear ratio directly affects propeller speed, technicians can use different percentages to optimise acceleration, top-end speed, or fuel efficiency. Furthermore, the 1 1/4 inch width and EN36A material provide the strength necessary for repeated load cycles in continuous marine service. Consequently, operators can trust consistent performance even under heavy usage.
Why Choose Argomarine
Argomarine delivers practical gearbox parts that are tested in Australian conditions. The company maintains clear part numbering, which simplifies the ordering process and reduces workshop delays. For more gearbox hardware, see our Gear Box Parts category: https://www.argomarine.com.au/product-category/gear-box-parts/
