ZM 07.603-05 Bevel Gear (ZM-120U Travel Differential)

ZM 07.603-05 Bevel Gear (ZM-120U Travel Differential)

The ZM 07.603-05 bevel gear is the driven half-axle bevel gear for the travel axle with the ZM120 06.100.000-05 differential, designed to receive torque from the cross spider side gears and transmit it to the drive wheel shafts. It is utilized on self-propelled grain throwers of the ZM-120U series, as well as during the modernization and retrofitting of running systems on other grain thrower series when transitioning to a gearless drive layout with an independent gearmotor.

The design of a single differential incorporates two identical bevel gears-one for the inner end of the left (ZM120 06.120.001-05) and right (ZM120 06.110.001-05) half-axles. The component is supplied separately, allowing for point replacement of a worn gear pair without needing to purchase the half-axle or the entire oil drum assembly.

Technical Specifications of the ZM 07.603-05 Bevel Gear

• Catalog number - ZM 07.603-05
• Gear rim parameters - number of teeth z = 28, module m = 3.5
• Seating parameters - internal Ø30 mm bore for an 8x7x25 key and an M8 locking screw (GOST 1477-93)
• Application - bevel group of the sealed travel differential drum ZM120 06.100.000-05 for ZM-120U grain throwers
• Material - high-strength structural steel with factory quenching and precision gear milling
• Quantity per machine - 2 pcs. (identical for the left and right sides)
• Country of manufacture - Ukraine

Design Features and Compatibility with Self-Propelled Gearboxes

High-quality manufacturing and thermal tooth treatment ensure exceptional wear resistance. The gear is fabricated from a durable steel billet, and its straight bevel tooth undergoes surface hardening to withstand high specific pressures. A standard 8x7 mm keyway is machined into the hub, along with a threaded bore for an M8 clamping screw, ensuring rigid gear fixation on the shaft without axial play.

The gear pair operates within a constant oil bath inside the drum. Within the sealed differential housing, both ZM 07.603-05 gears remain in constant mesh with two ZM 07.605 bevel side gears (z=17, m=3.5) mounted on the cross spider pins. Center distance accuracy and tooth contact patch within this bevel group are adjusted using ZP 07.401 compensation washers placed under the gear end faces.

It is worth noting the structural unification with the self-propelled gearbox gear of classic grain throwers. Based on its main parameters (number of teeth z=28 and Ø30 mm bore), this component is a geometric analogue of the ZM 07.603 bevel gear used inside the self-propelled gearbox on classic ZM-60 models. The ZM 07.603-05 version by Zavod Moroza features a reinforced execution and high precision tooth milling specifically adapted for heavy loads directly on the travel axle. Due to the matching primary tooth profile, the component is interchangeable, and minor technological hub length variations are easily compensated for by the standard adjustment washer set during assembly.

Associated Components for Bevel Group Assembly

When replacing the ZM 07.603-05 bevel gears or overhauling the differential, special attention should be paid to the following associated components:

• ZM 07.605 bevel side gears (z=17, m=3.5) - 2 pcs.
• ZP 07.110.000 differential cross spider assembly
• ZP 07.401 compensation washers (-01 / -02 / -03) - 2 pcs.
• 8x7x25 keys and M8 locking screws (GOST 1477-93)
• ZM120 06.110.001-05 short right half-axle and ZM120 06.120.001-05 left half-axle

Buying the ZM 07.603-05 Bevel Gear from Zavod Moroza

By ordering ZM 07.603-05 bevel gears directly from Zavod Moroza, you receive factory components featuring quality heat treatment and a precise tooth profile, guaranteeing smooth and durable differential operation under heavy loads.

Contact our sales department via the provided phone numbers or submit an inquiry on our website. Our specialists will assist you in selecting the required components for your machinery and ensure prompt dispatch of spare parts directly from the manufacturer's warehouse!