The GFB307 is a planetary gearbox configuration listed for swing drive applications. It transmits power from a compatible hydraulic motor through a reduction mechanism to provide the output torque and speed required by the equipment. The appropriate configuration depends on the application, reduction ratio, motor interface, braking requirements and mounting dimensions.
For OEM integration or replacement projects, confirm whether the required supply is a gearbox only or a complete drive assembly. The motor, brake and other components included in the final configuration should be specified before ordering.
The following specifications are based on the supplied product data. Confirm the applicable ratings and available configurations against the technical drawing before final equipment selection.
| Parameter | Specification |
|---|---|
| Model | GFB307 |
| Rated Output Torque | 12,500 Nm |
| Maximum Output Torque | 17,000 Nm |
| Single-Stage Reduction Ratios | 5.3 / 6.2 |
| Two-Stage Reduction Ratios | 17.4 / 28 / 36.1 / 46.7 |
| Three-Stage Reduction Ratios | 60.5 / 80.6 / 100 / 202 |
| Listed Hydraulic Motor Options | OMS, OMT, A2FM56, A2FM63, A2FM80, A2FM90, A2FM107 and A2FM125 |
| Maximum Brake Torque | 700 Nm |
Note: The listed motor models and reduction ratios are configuration options, not confirmation that every combination is available. Verify the selected motor, mounting interface, operating speed, required output torque and brake specification before ordering.
The planetary gearbox reduces input speed and increases output torque according to the selected ratio. The appropriate ratio should be determined from the required output speed, load and operating cycle.
The supplied data lists OMS, OMT and several A2FM motor sizes as hydraulic motor options. The required motor configuration should be selected according to the hydraulic system, connection dimensions and operating parameters of the host machine.
Single-stage, two-stage and three-stage ratio options are listed for the GFB307. Confirm the availability of the required ratio and its associated torque and speed limits with the supplier.
The supplied product data lists a maximum brake torque of 700 Nm. Confirm the applicable brake configuration, operating conditions and compatibility with the equipment control system before specifying the assembly.
A suitable swing drive gearbox can be used in equipment that requires controlled rotational movement. Actual suitability depends on the required torque, speed, mounting interface and drive configuration.
Excavators and other construction machinery with hydraulic swing systems.
Drilling equipment requiring controlled rotary movement.
Industrial mobile equipment with compatible hydraulic drive systems.
OEM projects and replacement applications requiring a verified planetary gearbox configuration.
Compare the equipment's operating torque requirements with the gearbox ratings. Rated output torque and maximum output torque represent different operating limits and should not be treated as interchangeable.
Determine the required output speed and torque, then confirm which listed reduction ratio meets the application's requirements. The final selection should account for operating duty and applicable load limits.
Provide the hydraulic motor model, displacement, mounting flange and shaft connection details. Motor compatibility should be confirmed for the exact gearbox configuration rather than inferred from the motor series name alone.
Compare the gearbox mounting dimensions, output interface and available installation space with the equipment drawing. Similar model names or nominal torque values do not guarantee direct interchangeability.
Specify whether the order requires the gearbox only or a complete assembly with hydraulic motor, brake and other components. Confirm the exact supply scope in the quotation.
The following image is retained from the original product listing as a visual reference. Confirm the exact model and configuration of the supplied unit before purchase.
To help confirm the appropriate configuration, please provide the following information when requesting a quotation.
Existing gearbox model and nameplate photograph, if available.
Required rated output torque and reduction ratio.
Hydraulic motor model and connection dimensions.
Mounting drawing and output interface details.
Brake requirements and relevant hydraulic operating parameters.
Equipment model, application and operating conditions.
Compatibility should be confirmed through technical documentation and application requirements. A similar model designation alone does not establish that a replacement unit can be installed directly.
The supplied product data lists a rated output torque of 12,500 Nm and a maximum output torque of 17,000 Nm. Confirm the applicable ratings for the selected configuration before use.
The supplied data lists single-stage ratios of 5.3 and 6.2, two-stage ratios of 17.4, 28, 36.1 and 46.7, and three-stage ratios of 60.5, 80.6, 100 and 202.
The supplied data lists OMS, OMT, A2FM56, A2FM63, A2FM80, A2FM90, A2FM107 and A2FM125 motor options. Confirm the required motor model and mechanical interface before ordering.
The supplied product data lists a maximum brake torque of 700 Nm. Confirm the brake configuration and applicable operating conditions for the intended application.
Replacement suitability depends on the reduction ratio, torque requirements, mounting dimensions, output connection, hydraulic motor interface and brake configuration. Provide the existing unit's model and technical drawings for compatibility review.
The original product information states a minimum order quantity of one unit. Confirm current availability, delivery arrangements and final order terms with the supplier.
The original product information lists T/T as an accepted payment method and states that other arrangements can be negotiated. Confirm the final payment terms in the order agreement.
