ZP 01.625 Reverse Half-Axle Assembly with Cam Clutch (Without Wheel)

ZP 01.625 Reverse Half-Axle Assembly with Cam Clutch (Without Wheel)

The ZP 01.625 half-axle assembly without the wheel set represents a fully integrated mechanical rear axle drive unit for ZM-60, ZM-60A grain thrower series, and compatible modifications. This mechanism mounts to the lower frame elements using two H 026.058 cast-iron footed housings. The primary function of the unit is to transmit traction force from the self-propelled gearbox to the hub while providing the capability to quickly disengage the wheel drive during machine relocation or towing.

Structurally, the component consists of a 30 mm diameter steel ZP 01.625 shaft carrying the ZP 01.340 drive sprocket with a ZP 01.646 safety shear pin, a sliding ZP 01.102 cam clutch, a spring-loaded ZP 01.631 latch, an 11206 support-bearing set within cast-iron housings, and a ZM 01.180 hub with pressed-in NEN 400003 cermet bushings. The distinction of this supply configuration is the exclusion of the ZPT 1.6.2 rubber-tired wheel and its mounting fasteners. The square hub flange remains open for mounting 4-hole standard wheels already available on your farm.

This configuration option is convenient when wheel tires or steel disks remain serviceable, or if installing upgraded 500 mm OVS-25 cleaner wheels or pneumatic tires with corresponding disks is planned. Ordering the assembled half-axle enables you to restore the drive unit without overpaying for a wheel set and without wasting time on the mechanical assembly of the clutch and bearing supports.

Technical Specifications of the ZP 01.625 Half-Axle (With Cam Clutch, Without Wheel)

• Assembly designation: ZP 01.625 Reverse Half-Axle Assembly (Without wheel block).
• Machine compatibility: ZM-60, ZM-60A (in asymmetric setups) or as an element of a symmetric drive (ZM-60U, ZM-90U).
• Power shaft: Steel ZP 01.625 rod (30 mm diameter, Steel 35) featuring longitudinal clutch slots, a latch detent pocket, and holes for cotter pins and a shear pin.
• Support-bearing assemblies: 2 cast-iron housings H 026.058 (Sch 20) with mounting feet.
• Bearing kit: Spherical double-row bearings 11206 (1207K + H207 tapered adapter sleeve set) — 2 pcs.
• Bearing chamber protection: Through cast-iron covers H 026.163 with clamped reinforced lip seals (30x52 mm oil seals) — 2 pcs., grease fittings.
• Drive sprocket: ZP 01.340 (25 teeth, t=19.05 mm pitch for PRL-19.05 chain) featuring a smooth bore and a ZP 01.646 shear pin.
• Wheel hub: Cast-iron cam hub ZM 01.180 with a 4-hole flange and two NEN 400003 cermet bushings (30x40x20 mm).
• Disengagement mechanism: Half-clutch ZP 01.102, heavy-duty spring ZP 01.626, support washer ZM 01.435, spacer ring 30 ZM 01.623, and latch ZP 01.631.
• Wheel inclusion: Excluded (supplied without the ZPT 1.6.2 wheel and M12 bolts).

The operation of the half-axle relies on the coordinated interaction of moving parts on the ZP 01.625 shaft, where slots are milled to allow free longitudinal travel of the ZP 01.102 clutch. In the working position, the ZP 01.626 heavy-duty spring holds the clutch cams engaged with the ZM 01.180 hub, transferring rotation from the ZP 01.340 sprocket. Securing the sprocket onto the smooth shaft via the ZP 01.646 safety shear pin creates a protective link within the transmission—if travel jams, the pin shears, preventing tooth deformation in the self-propelled gearbox gears.

The support block is built upon two H 026.058 housings containing double-row spherical 11206 bearings. Thanks to their spherical raceways, the bearings compensate for shaft deflection and misalignment of mounting holes on the grain thrower frame. Dust entry into the bearing chamber is blocked by 30x52 mm oil seals installed inside the H 026.163 cast-iron through covers.

When the clutch is disengaged, the ZM 01.180 hub rolls freely on the shaft via two NEN 400003 cermet bushings. The porous structure of the cermet retains lubricant and protects the 30 mm shaft surface from wear during machine transport.

Full Contents of the ZP 01.625 Half-Axle Kit (Without Wheel)

Shaft and Drive Control Elements:

• Reverse shaft ZP 01.625 (30 mm diameter, with clutch slots, latch detent pocket, and mounting holes).
• Cam half-clutch ZP 01.102 with side lever arms.
• Compression heavy-duty spring ZP 01.626 and stamped support washer ZM 01.435.
• Latch assembly ZP 01.631 complete (guide bushing ZP 01.632, return spring ZP 01.628, release button ZP 01.629 or retaining ring).
• Thrust-spacer ring 30 ZM 01.623 with VM10 set screw and 50P spring ring.

Drive Group:

• Sprocket ZP 01.340 (25 teeth, 19.05 mm pitch for PRL-19.05 chain).
• Safety shear pin ZP 01.646 and two retaining rings 6511 019.

Hub and Support Bearing Units:

• Cam hub ZM 01.180 with a square flange (for 4 mounting holes).
• Pressed-in cermet bushings NEN 400003 — 2 pcs.
• Cast-iron support housings H 026.058 on mounting feet — 2 pcs.
• Spherical bearings 11206 with H207 tapered clamping sleeves — 2 pcs.
• Through cast-iron bearing covers H 026.163 — 2 pcs.
• Rubber lip seals (30x52 mm oil seals) — 4 pcs.
• Grease zerks for lubrication.

Depending on the grain thrower's production series, the shafts themselves feature minor differences in detailed machining. Original blueprints specify a short keyway, but in practice, its length is extended to ensure smooth travel of the ZP 01.102 half-clutch when disengaging drive. Distances between groove locations for 6511 019 retaining rings and cotter pin hole diameters may also vary.

Standard mounting of the ZP 01.340 sprocket occurs on a smooth shaft surface via the ZP 01.646 shear pin serving a protective role; however, if the bore wears out, farms frequently rebore the sprocket to accept a keyed connection. Zavod Moroza manufactures both classic shear-pin sprockets and modified keyed versions with calculated strength thresholds, eliminating play without compromising gearbox protection.

Modifications to the drive disengagement latch: the factory ZP 01.629 button for the ZP 01.631 latch was originally smooth, making it difficult to grip with greasy hands. Zavod Moroza's repair kits feature buttons with deep end knurling, while modern grain throwers (ZM-60U, ZM-90U) utilize a metal ring that is easy to pull while wearing work gloves.

Classic ZM-60 machines employed an asymmetric layout where only the left ZP 01.625 half-axle disengaged while the right remained blind—meaning during towing, the blind wheel spun the internal differential gears of the gearbox. To eliminate this load, grain throwers are frequently converted to a symmetric drive by installing two identical ZP 01.625 half-axle assemblies with clutches, placing both ZM 01.180 hubs into free-rolling mode on NEN 400003 bushings and completely uncoupling wheels and transmission.

Thanks to our in-house machining facilities, we produce standardized serial half-axles as well as adapt individual elements to modified equipment parameters. If your machine previously had re-machined mounting seats or altered hole patterns, we can manufacture a shaft matching your exact configuration or bore out the ZM 01.180 hub to your specifications.

Buying the ZP 01.625 Reverse Half-Axle Assembly (Without Wheel)

The expertise of Zavod Moroza specialists builds on analyzing grain thrower operations across generations—from classic ZM-60s to modern ZM-60U, ZM-90U, and ZM-120U series. This has allowed us to create convenient repair kits for overhauling running gear without unwarranted expenses.

Ordering the ZP 01.625 half-axle assembly without the wheel set is a rational way to restore the mechanical components of the left drive without purchasing new wheel rims and tires. You receive a factory-calibrated unit featuring dialed-in ZP 01.102 clutch travel, installed 11206 bearings, oil seals, and pressed-in NEN 400003 bushings. For installation, you simply need to secure the H 026.058 housings to the frame, bolt your existing wheel to the hub flange, and slip on the drive chain.

The ready assembly block eliminates the need for workshop fitting or pressing bearings. Contact our sales department—we will help select the right configuration matching your grain thrower's model and condition, organizing prompt shipping to return your machinery to work quickly!