Product Description
Crown CR 073439 Pinion Shaft is an OEM drive unit component manufactured from case-hardened alloy steel with CNC engineered gear geometry, dual-stage shot peening, and cryogenic treatment. Designed for electric lift truck gearbox applications, compatible with Crown PE 4500 and PE 4000 series. Direct replacement for OEM part number CR 073439, also cross-referenced as 073439, 73439, and CR73439. Used in transmission drive trains with associated radial bearings and hardware.
Specifications
Part Numbers
| OEM Part Number | CR 073439 |
| Manufacturer Part Number | CR073439 |
| Cross-Reference Part Numbers | Also referenced as 73439, CR73439, 073439 |
| Compatible Models | Crown PE 4500 Series, PE 4000 Series electric pallet trucks |
Frequently Asked Questions
Q: What is the Crown CR 073439 Pinion Shaft and what does it do?
A: The CR 073439 is an OEM drive unit component for Crown electric lift trucks. It is a case-hardened alloy steel shaft with precision gear geometry that transmits torque from the motor to the gearbox in Crown PE 4500 and PE 4000 series pallet trucks.
Q: Which Crown models use the CR 073439 Pinion Shaft?
A: The CR 073439 is compatible with Crown PE 4500 Series and PE 4000 Series electric pallet trucks. This shaft is a direct replacement for OEM part number CR 073439. Cross-references include 073439, 73439, and CR73439.
Q: What material properties does the CR 073439 Pinion Shaft have?
A: The CR 073439 is manufactured from case-hardened alloy steel with dual-stage shot peening and cryogenic treatment. This construction provides high fatigue resistance, precise gear mesh geometry, and durability for continuous duty cycle transmission applications.
Q: What components are associated with the CR 073439 Pinion Shaft?
A: The CR 073439 shaft assembly includes radial bearings and hardware that support the shaft within the gearbox housing. When replacing the pinion shaft, verify that associated bearings and seals are in acceptable condition or order them as replacement kits.
Q: When should the CR 073439 Pinion Shaft be replaced?
A: Replace the CR 073439 if you observe grinding or noise from the gearbox, gear tooth damage visible on inspection, or excessive backlash between the pinion and mating gear. A failed or damaged pinion shaft compromises drive efficiency and lift performance.