Railway gearbox CFD PR23.

Railway gearbox CFD PR23.

Heavy-duty axle-mounted gearbox

The PR23 railway gearbox is dedicated to heavy to very heavy machines (locomotives, maintenance-of-way vehciles) thanks to its maximum permissible wheel span of 235 mm. It is available with two reduction stages (main mounting) or a single stage (secondary mounting).

Presentation

The CFD PR23 railway gearbox is designed for a maximum diameter of the wheel bore up to 235mm, allowing up to 25t axle load. As on the PR18 axle, the bevel gear is installed on the axle. This assembly allows the possibility of creating a single-stage secondary axle, which is necessary depending on the type of bogie used. The primary stage consists of a parallel-shaft reduction stage located on the input shaft. CFD calculates its axles for intensive use, so the gear modules used guarantee an unrivalled service life and reliability.

Railway gearbox type PR23
Railway gearbox type PR23

The PR23 railway gearbox is available with 14 different ratios. All ratios allow to reach at least 100 km/h with new 1050 mm wheels and worn 970 mm wheels and up to 120 km/h at maximum speed. The internal lubrication system ensures optimum operation of the bearings and gears.

Internal view CFD railway gearbox PR23

Internal view CFD railway gearbox PR23

Isometric view PR23 railway gearbox

Isometric view PR23 railway gearbox

Side view PR23 railway gearbox

Side view PR23 railway gearbox

Application

Heavy locomotives
Maintenance-of-way vehciles.

  • up to 25t axle load
  • reduction ratio from 3.04 to 5.81. (bevel gear ratio of 3.117)
  • single or double reduction stage
  • very high maximum torque
  • inlet flange DIN 225 or 285
General information
Lower gearKlingerberg bevel gear
Top gearParallel helical gear
Maximum diameter of the wheel bore235 mm
Input rotation speed3200 rpm
Output torque70,000 N.m peak
General information

EQUIPMENT

SPEED SENSORS
option
GREASE
internal pump
The list of equipment is not exhaustive. Other information is available on request
PR23 railway gearbox diagram
PR23 railway gearbox diagram
To know more about it

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