Home / Products / Propulsion Systems / Stern Gear Assemblies
STERN GEAR
Marine Stern Gear Assemblies for Coordinated Shaft-Line Projects
ERBA Marine coordinates stern gear around hull construction, shaft dimensions, machinery mounting and lubrication. Drawings and measurements allow the stern tube, bearings, gland and related interfaces to be reviewed together.
Final arrangement depends on hull material, engine mounting, shaft support, lubrication and available space.
Project-matched stern gear
Steel, bronze and GRP arrangements with suitable bearings, glands and sealing interfaces.
ERBA-Managed Supply
Technical clarification, quotation and supply through ERBA Marine.
Drawing-Led Review
Interfaces checked from verified project information.
Newbuild & Replacement
Support for planned projects, refits and replacement scopes.
GCC Coordination
Regional commercial and delivery coordination.
STERN GEAR RANGE
Stern tubes, glands and bearings selected as one system.
Choose the closest starting point; ERBA Marine will confirm the complete interface and component scope.
Custom Steel Stern Tubes
Oil-lubricated steel arrangements can be coordinated with bearing, seal and oil-circulation requirements.
- Custom tube length and interfaces
- Bearing and seal scope confirmed
- Project drawings required
Bronze Water-Lubricated Stern Gear
Bronze stern tube configurations with water-lubricated bearings and a suitable gland arrangement.
- Flexible or solid engine mounting reviewed
- Intermediate bearing needs checked
- Gunmetal gland options available
GRP Stern Gear Assemblies
GRP stern tubes reviewed for compatible composite hull and installation arrangements.
- Hull integration considered
- Shaft and bearing interfaces verified
- Installation drawing coordinated
Marine Shaft Glands
Water-lubricated, flexible inboard and grease-lubricated gland arrangements selected for the installation.
- Shaft movement considered
- Lubrication route confirmed
- Dimensions matched before supply
Marine Shaft Bearings
Cylindrical and flanged water-lubricated bearings sized from shaft, housing and lubrication data.
- Naval-brass or phenolic shell options
- Nitrile-rubber lining
- Metric and imperial sizes reviewed
SYSTEM INTERFACES
Stern gear selection follows the shaft line and hull.
A stern tube cannot be selected from shaft diameter alone. Length, supports, mounting, bearings, gland, lubrication and hull penetration must agree.
Installation context
The hull and machinery arrangement determines the practical stern gear route.
- Hull material and deadwood
- Rigid or flexible engine mounting
- Bearing spans and available space
Replacement evidence
Accurate installation data is essential where the original drawing is missing.
- Shaft and tube dimensions
- Housing, gland and seal details
- Clear inboard and outboard photos
TECHNICAL ENQUIRY CHECKLIST
What to send for a useful propulsion review.
Complete information reduces unnecessary clarification and helps ERBA Marine prepare a more accurate technical and commercial response.
Vessel & machinery
- Vessel type and hull material
- Newbuild or replacement scope
- Engine and gearbox arrangement
- Rigid or flexible machinery mounting
- Shaft diameter and overall length
Dimensions & project scope
- Stern tube length and hull penetration
- Bearing locations, spans and housings
- Existing gland, seal and lubrication arrangement
- Drawings, dimensional sketches and photographs
- Required component scope and delivery schedule
PROJECT PROCESS
A clear route from enquiry to coordinated supply.
Custom and replacement propulsion equipment benefits from documented technical checkpoints.
PROCESS
1. Send the project data
Share vessel, machinery, dimensions, photos, drawings and required scope.
PROCESS
2. Clarify the interfaces
ERBA Marine identifies missing inputs and checks connected components.
PROCESS
3. Confirm the proposal
Configuration, materials, documentation, commercial terms and delivery are agreed.
PROCESS
4. Coordinate supply
ERBA Marine remains the customer-facing contact through the confirmed supply scope.
Important: Published examples describe available solution routes. Final dimensions, materials, tolerances, class or inspection scope, price and delivery are confirmed only in ERBA Marine’s written quotation.
FREQUENTLY ASKED QUESTIONS
Stern Gear Assemblies FAQs
Practical answers for selection, replacement and project planning.
Yes. The scope can include the stern tube, bearings, gland or seal interfaces and related shaft-line components, depending on the confirmed requirement.
The choice depends on hull construction, shaft arrangement, installation method, dimensions and project requirements. ERBA Marine reviews the vessel data before recommending a route.
It may be possible, but accurate measurements and clear installation photographs are essential. A verified drawing or dimensional survey may be required for complex arrangements.
Yes. Water-lubricated, flexible and grease-lubricated arrangements can be reviewed. The correct option depends on shaft movement, machinery mounting, lubrication and the installation.
Yes, when shaft diameter, bearing housing, overall length, lubrication method and required fit are confirmed.
PROJECT-SPECIFIC ENQUIRY
Request an ERBA Marine Stern Gear Assemblies review.
Send the strongest available technical information. ERBA Marine will review the requirement and identify any missing dimensions or interfaces before quotation.
- Attach drawings and clear photographs.
- State known dimensions and operating concerns.
- Declare class, inspection or documentation needs early.
- Final scope is confirmed in writing before supply.
Request Stern Gear Selection
Fields marked * are required. Drawings and photographs are strongly recommended for replacements.
Your technical and contact information is sent only to ERBA Marine’s website enquiry recipients for follow-up.