Description
285526307903 Counter Shaft for Tata GBS-550 6-Speed Gearbox
The 285526307903 Counter Shaft is a 6-speed, 6.9-ratio counter shaft used in Tata GBS-550 gearbox applications. Tata parts catalogue documentation lists part number 285526307903 as “COUNTER SHAFT 6 SPEED (6.9 RATIO)” within the GBS-550 counter-shaft group.
The component forms part of the internal gearbox assembly and works with the transmission gear sets to transfer engine power through the selected gear ratios. It is an important component for gearbox rebuilding, transmission repair and replacement of worn or damaged internal gearbox parts.
The 285526307903 Counter Shaft is associated with Tata commercial-vehicle gearbox applications. Tata documentation shows it within the GBS-550 gearbox, while a Bharat Petroleum procurement document specifically identifies 285526307903 for a G550 gearbox fitted to Tata 1616 equipment.
Product Specifications
Part Number: 285526307903
Product: Counter Shaft
Gearbox: Tata GBS-550 / G550
Gearbox Type: 6-Speed Manual Transmission
Ratio: 6.9
Application: Tata Commercial Vehicles
Component: Gearbox Counter Shaft / Countershaft
Category: Transmission & Gearbox Spare Parts
Known Application Reference: Tata 1616 G550 gearbox
Emission/Application Reference: BS3 / BS4 applications are documented for this part number.
GBS-550 Counter Shaft Function
The counter shaft is an internal rotating shaft within a manual gearbox that carries transmission gears and transfers rotational power between the input and output gear sets.
The correct counter shaft is essential for maintaining proper gear alignment, bearing support and transmission operation. During gearbox repair or rebuilding, the counter shaft should be checked along with its associated gears, bearings, spacers, synchronizer components and other transmission parts.
Tata’s counter-shaft parts breakdown for this assembly includes the constant-mesh gear, 3rd- and 4th-speed counter-shaft gears, overdrive gear, spacers, bearings and synchronizing components.
Application
The 285526307903 Counter Shaft is intended for specified Tata GBS-550 / G550 6-speed gearbox applications.
Available documentation associates this part with Tata commercial vehicles and specifically identifies the G550 gearbox application on a Tata 1616.
The part has also been documented for BS3/BS4 6-speed 6.9-ratio applications.
Always verify the gearbox model, vehicle model and existing part number before ordering.
Alternative Names & Buyer Search Terms
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Why Replace a Worn Counter Shaft?
A counter shaft operates under significant mechanical load inside the gearbox. Wear or damage to the shaft or its associated gear surfaces can contribute to abnormal gearbox noise, excessive play, gear engagement problems and premature wear of related transmission components.
When rebuilding a GBS-550 gearbox, the counter shaft should be inspected together with its gears, bearings, spacers, synchronizers and related components. Replacing only one damaged component may not resolve an underlying wear problem elsewhere in the gearbox.
Frequently Asked Questions
What is 285526307903?
285526307903 is a Tata 6-speed counter shaft with a 6.9 ratio application, listed within the GBS-550 gearbox counter-shaft group.
Which gearbox uses 285526307903?
The part is documented for the Tata GBS-550 / G550 6-speed gearbox.
What is the ratio of the 285526307903 counter shaft?
The Tata catalogue describes it as a 6.9-ratio counter shaft.
Is 285526307903 used in Tata 1616?
A Bharat Petroleum procurement document specifically lists 285526307903 for a G550 gearbox installed on Tata 1616 equipment.
Is 285526307903 used for BS3 and BS4 vehicles?
A municipal procurement listing identifies the part as a 6-speed 6.9-ratio counter shaft for BS3/BS4 applications.
What does a gearbox counter shaft do?
The counter shaft supports and carries gearbox gears and transfers rotational power through the transmission gear train to provide the required gear ratios.
Where can I buy 285526307903 Counter Shaft in India?
You can contact Singla Motor Parts, Kashmiri Gate, Delhi for availability, pricing and compatibility assistance.
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