ZP 07.609 Differential Cross Spider (Bare)

ZP 07.609 Differential Cross Spider (Bare)

The ZP 07.609 differential cross spider is the structural shaped housing of the bevel differential mechanism, designed for mounting, precise centering, and holding the ZM 07.605 side gear pins (axles). It serves as the primary structural foundation of the bevel assembly, transmitting torque from the driven spur gear or oil drum (depending on the application) directly to the bevel side gears and travel axle half-axles of the grain thrower.

The component is supplied in a "bare" configuration-meaning without auxiliary components, as a standalone housing without pre-installed pins, side gears, bushings, or locking screws. This allows farms to perform cost-effective restoration repairs by replacing only the damaged cross spider housing while retaining and reusing serviceable working components from the old assembly or existing repair kits.

Technical Specifications of the ZP 07.609 Cross Spider Housing

• Catalog number - ZP 07.609
• Purpose - structural housing for assembling the bevel side gear group in gearboxes and differential axles
• Application - travel axle differentials ZM120 06.100.000-05 (ZM-120U grain throwers), two-speed gearboxes with differential ZP 07.100.000 (ZM-60U / 90U grain throwers), and classic self-propelled gearboxes ZP 07.000 (ZM-60 grain throwers)
• Material - structural steel subjected to heat treatment, precise milling, and boring of mounting holes
• Structural holes - 2 coaxial mounting holes for ZM 07.608 side gear pins, 1 central cylindrical hole for the ZM 07.105 (25x32x45) through cermet bushing, 4 mounting holes on the ears for M8 bolts (as per blueprint, provided sample, or blank without holes) for bolting to the z=82 driven gear or drum flange, and 2 M6 threaded holes for pin locking set screws
• Quantity per machine - 1 pc.
• Country of manufacture - Ukraine (Zavod Moroza)

Application Assemblies for the ZP 07.609 Differential Cross Spider

Thanks to standardized dimensions and uniform bolt circle hole patterns, this component is utilized across several drive systems in grain thrower machinery:

1. In the axle travel differential (ZM120 06.100.000-05) of ZM-120U grain throwers
   In gearless travel systems featuring an independent gearmotor, the ZP 07.609 cross spider is installed inside a sealed external drum directly on the shafts. It is bolted with four M8 bolts to the housing of this drum and rotates together with it within an oil bath.
2. In the two-speed travel gearbox with an integrated differential (ZP 07.100.000)
   In the self-propelled two-speed gearbox where the differential mechanism is integrated into the drive train, the cross spider is secured directly to the large spur gear of the gearbox using four M8 bolts. It serves as the central structural base uniting the ZM 07.605 side gears and transmitting torque further to the half-axles.
3. In the self-propulsion mechanism (ZP 07.000 self-propelled gearbox) of classic ZM-60 machines
   In standard gearboxes of ZM-60 and ZM-60A grain throwers, the cross spider was similarly mounted onto the large driven gear of the internal bevel block differential, acting as the base foundation for the entire bevel gear group.

When Is It Practical to Buy a Bare Cross Spider (Without Accessories)?

Purchasing the bare ZP 07.609 cross spider represents an optimal engineering solution under the following conditions:

• Housing damage while internal components remain serviceable
  If extreme operational loads caused steel housing deformation, sheared off mounting ears, or wallowed out the M8 bolt holes, yet the pins, side gears, and bushings show no wear or are readily available.
• Repair budget optimization
  A bare housing costs less than a fully assembled unit (ZP 07.110.000), avoiding extra expenses for new side gears and pins if your existing ones are in excellent condition or already on hand in a repair kit.
• Custom modifications and non-standard builds
  If your facility is custom-modifying or upgrading the drive train layout (e.g., retrofitting a gearmotor, adapting matching gears, or building custom drive assemblies), the bare cross spider provides a robust factory foundation for such engineering designs.

Associated Components for Inspection and Assembly

When replacing the cross spider housing, it is essential to inspect the condition of all mating elements installed within it. If associated parts show signs of wear or scuffing, the following are typically ordered alongside the bare cross spider:

• Side gear pins ZP 07.608 - 2 pcs.
• Bevel gears (side gears) ZM 07.605 (z=17, m=3.5) - 2 pcs.
• Cermet bushings ZM 07.105-01 (25x32x20) - 2 pcs. (for side gears)
• Central cermet bushing ZM 07.105 (25x32x45) - 1 pc.
• Adjustment (compensation) washers ZP 07.401 / ZM 07.401 - for eliminating axial play
• M8x35 bolts with spring lock washers and M6x15 locking set screws

Please note potential design variations, as depending on the manufacturing year and specific modification of your gearbox or axle, associated components may differ. This applies to both the pin retention method (M6 locking screws versus hardened pins) and bushing material (modern cermet versus traditional bronze). Furthermore, the thickness and height of bushings and compensation washers directly affect the seating height of side gears, clearances, and proper meshing of the entire bevel pair. To prevent repair errors, we recommend checking your equipment catalog or contacting Zavod Moroza engineers (you can send photos or videos of the disassembled assembly) for precise component selection.

Buying the ZP 07.609 Differential Cross Spider (Bare) from Zavod Moroza

By obtaining the bare ZP 07.609 differential cross spider directly from the manufacturer, you ensure exact axis alignment and factory compatibility with our serial machinery. If you operate different equipment, modified shafts, or already worn companion elements, we can help equip the housing with matching pins, bushings, and compensation washers for precise mesh tuning.
Don't waste time on workshop adjustments! When mounting a bare cross spider, it is critical that the housing bolt pattern aligns precisely with the drum or gear holes. If old mounting seats are wallowed out and require drilling or welding, replacing the assembly entirely is much simpler. Alternatively, the complete cross spider assembly delivered pre-adjusted and ready for installation may be the preferred choice to save repair time.

Either way, you receive a reliable factory component. Need advice on selection or compatibility with your machinery? Prepare photos/videos of the disassembled assembly and give us a call. Zavod Moroza engineers will verify parameters online and arrange prompt dispatch of the required spare parts directly from the factory!