Bearing Cover H 026.163

Bearing Cover H 026.163 (H.026.163 / H026.163)

The H 026.163 bearing cover is a specialized through-type (open, pass-through) cast-iron component that serves as an essential part for sealing and securing bearing assemblies in agricultural machinery. It was designed as a universal element for enclosing bearing chambers with a 30 mm working shaft exit and is installed in pairs with a cast-iron housing (such as H 026.058 or H 026.085).

The primary engineering purpose of this cover is to securely press and axially fix the outer ring of the bearing (the spherical double-row 11206 bearing) inside the housing, as well as to protect the internal chamber from an aggressive external environment. Because the steel shaft passes completely through the component, a through-hole with an internal counterbore is provided at its center to accommodate a reinforced rubber lip seal (a 30x52 mm oil seal). This design prevents grease leakage from the bearing chamber and blocks abrasive grain dust and dirt from entering.

Manufactured from high-quality gray cast iron (grades Sch 20 or Sch 26), the casting possesses high mechanical strength, withstands significant vibrational loads, and ensures stable component coaxiality during the operation of power transmissions, counterdrives, and loading mechanisms.

Technical Specifications of Bearing Cover H 026.163

• Catalog number: H 026.163 (alternative markings include H.026.163, H026.163, or occasionally unnumbered)
• Part type: Flanged through-type (open, pass-through) bearing cover
• Compatible bearing: 11206 (radial spherical double-row, dimensions 30x72x17 mm)
• Compatible housings: H 026.058, H 026.085
• Internal seal: Reinforced rubber lip seal (oil seal size 30x52 mm / 1.2-30x52-1)
• Material: Gray cast iron (grades Sch 20 or Sch 26)
• Fastening method: Bolted (2 through-holes in mounting lugs for M8 / M10 bolts)
• Weight: 0.50 kg

Structurally, the component is a solid-cast iron flange with two symmetrical mounting "feet" (lugs). A pass-through hole for a 30 mm steel shaft is machined at the center. Inside this bore, two working levels are provided: an inner lip serves to tightly press and retain the outer ring of the 11206 bearing, while the outer precise counterbore is intended for a secure press-fit of the 30x52 mm reinforced oil seal. A dedicated threaded port is drilled and tapped on the cylindrical boss of the cover to install an angled or straight grease fitting (zerk fitting), enabling grease injection directly into the inner bearing chamber. However, depending on the specific assembly modification and maintenance method (for example, if the grease fitting is already installed on the cast-iron housing itself), this cover can also be manufactured without a grease fitting port.

The utilization of gray cast iron grades Sch 20 or stronger Sch 26 for casting this part is dictated by the high vibrational and dynamic loads present in agricultural machinery. Due to the presence of lamellar graphite in its structure, gray cast iron possesses a unique ability to effectively dampen minor vibrations and resonant oscillations inevitably generated by the tension of drive belts and chains. Furthermore, Sch 20 / Sch 26 cast iron features high compressive strength, excellent corrosion resistance, and immunity to thermal deformation, guaranteeing the preservation of precise seat geometry for the oil seal over many years of operation.

In certain factory catalogs and agricultural machinery manuals (particularly within grain thrower running gear specifications), this part is frequently labeled simply as a "bearing cover," leaving the catalog number column blank. This peculiarity arose from historical factory modifications: any minor alteration to the casting (such as the presence or absence of a grease fitting port or a change in oil seal counterbore depth) required registering a new unique part index per drafting bureau rules. To avoid documentation confusion, compilers often retained the general name, even though the component structurally remained the standardized H 026.163 cover.

The specialists at Zavod Moroza thoroughly understand all these structural nuances, potential discrepancies, and practical execution variants. We manufacture H 026.163 bearing covers in strict compliance with casting technology and precise machining standards, guaranteeing ideal coaxiality, proper seating, and 100% compatibility with adjacent assemblies.

Application Assemblies for Bearing Cover H 026.163

Due to its versatile flanged design tailored for a 30 mm shaft, 11206 bearing, and 30x52 mm oil seal, the H 026.163 through-cover is widely utilized in the support assemblies of grain thrower equipment (ZM-60, ZM-90, ZM-120). Most frequently, the part is found in the following assembly units:

• Rear drive assembly (ZP 01.220) of grain throwers — 4 pcs.
• Counterdrive (ZP 04.000) of the intermediate transmission shaft — 1 pc.
• Loading conveyor (ZP 02.000) (upper head) — 1 pc.

Four such through-covers are utilized simultaneously in the grain thrower's reverse mechanism—two per driving wheel half-axle. They bolt directly onto massive H 026.058 cast-iron housings, securing 11206 bearings inside. Thanks to the 30x52 mm oil seal installed inside the cover, the assembly remains sealed, preventing grease leakage and protecting the bearing from pervasive abrasive dust and dirt within the machine's lower running gear.

On the grain thrower's intermediate shaft counterdrive, the H 026.163 cover is mounted on one side of the H 026.058 housing (on the drive pulley side). It secures the 11206 bearing, retains the 30x52 mm lip seal, and provides a clear shaft exit toward the pulley while withstanding constant radial loads and vibrations from drive belt and chain tension.

In the grain thrower's loading conveyor, the H 026.163 through-cover is mounted within the upper head assembly, operating alongside the H 026.085 cast-iron housing. The component ensures reliable sealing and clamping of the 11206 bearing on the main drive shaft, protecting the support assembly from grain dust during active material transfer by the scraper chain.

Buying Bearing Cover H 026.163 from Zavod Moroza

High-quality sealing and securing elements form the foundation for the longevity of any support system. Choosing to purchase an H 026.163 through-bearing cover of our manufacture provides you with a robust cast-iron component featuring calibrated seat geometry for a 30x52 mm oil seal and an ideal plane for clamping the 11206 bearing.

Nevertheless, we fully understand that for rapid equipment restoration within an agricultural enterprise, a standalone cast-iron part is often insufficient, and a ready-to-install kit is preferred. For this reason, Zavod Moroza offers the supply of fully pre-assembled bearing units. Depending on your specific task, we will assemble a custom kit—selecting the appropriate massive cast-iron housing (H 026.058 or H 026.085), professionally installing the 11206 spherical bearing, spacer rings, new reinforced lip seals, and sealing the assembly with matching through or blind covers. This approach guarantees 100% component coaxiality, bearing chamber tightness, and saves valuable repair time.

Contact our sales department for professional consultation and precise component selection. Choose high-quality parts or fully assembled support units directly from the manufacturer to restore your agricultural machinery's factory kinematics and ensure reliable, long-term operation!