Drive gear OKI 4PP4025-3340P001

The Drive gear OKI 4PP4025-3340P001 is a replacement drive gear designed for dot matrix printers from OKI, compatible with MICROLINE ML3320, ML3390 and similar models. This white gear transfers rotational motion within the printer’s paper feed and printhead mechanisms to maintain consistent movement and timing between components. It is engineered to meet mechanical tolerance and durability typical for printer spare parts, ensuring correct meshing with adjacent gears and reliable operation over extended print cycles.

Advantages

The drive gear provides precise tooth engagement to reduce slippage and minimize print errors caused by misfeeds or timing drift. Manufactured from wear-resistant polymer, it balances durability and low noise during operation. Its form factor and mounting points match OKI dot matrix assemblies, allowing straightforward replacement without modification. Using a dedicated replacement gear helps restore printer mechanical performance and can extend the service life of the print mechanism.

Suitable for

• Repairing OKI MICROLINE ML3320 and ML3390 dot matrix printers
• Maintenance of industrial and office dot matrix printing systems
• Replacing worn or damaged feed and timing gears in compatible models

Key specifications

• Color: white
• Function: drive gear for paper feed and printhead timing
• Material: wear-resistant polymer (engineered plastic)
• Compatibility: designed for OKI dot matrix printer assemblies such as MICROLINE ML3320 and ML3390
• Mechanical features: precision-toothed profile for accurate meshing and minimal backlash

How to use

Power off the printer and disconnect it from the mains before attempting any repair. Access the internal gear assembly following the service manual or manufacturer guidance for your specific model. Remove the defective gear by carefully releasing retaining clips or fasteners and note the orientation and seating of the part. Install the replacement drive gear in the same position, ensuring correct alignment of teeth and secure attachment of any clips or screws. Reassemble the printer, reconnect power, and run a test print to confirm proper feeding and timing.

Usage recommendations

Handle the gear and adjacent components gently to avoid misalignment. Inspect neighboring gears, bearings and shafts for wear and clean any debris before installation. Perform a test print and a short run of typical jobs after replacement to verify consistent feed and print quality. If uncertainty remains, consult a qualified service technician or the printer’s service documentation.