The YNF03554 Flange Coupling Gear Hub (48×13T) is a precision-machined transmission component designed for heavy-duty flexible coupling systems in construction machinery and industrial equipment. With an inner diameter range of 37.5–46.8 mm, outer diameter of 176 mm, and height of 74 mm, this gear hub ensures accurate alignment, stable torque transmission, and reduced vibration. Manufactured from high-strength alloy steel with advanced surface treatment, it delivers reliable performance and extended service life under demanding operating conditions.

• Model: YNF03554 flange coupling gear hub

• Gear specification: 48 × 13 teeth

• Dimensions: ID 37.5–46.8 mm, OD 176 mm, H 74 mm

• High-strength alloy steel construction

• Precision machining for accurate fit and smooth power transmission

• Wear-resistant, heat-treated surface for long service life

• OEM-equivalent design for direct replacement

• Flexible coupling assemblies in excavators and construction machinery

• Engine-to-pump and motor-to-pump drive connections

• Hydraulic pump coupling systems

• Industrial power transmission requiring robust gear hubs

• Coupling type and dimension verification before order

• Technical support for installation and application selection

• Supply of complete flange coupling assemblies and rubber elements

• Custom machining and drawing support upon request

• Anti-rust oil or protective coating applied

• Individually packed with foam for impact protection

• Export-standard cartons or wooden cases for bulk shipments

• Suitable for express courier, air freight, or sea transport

Q: How can I confirm this gear hub fits my coupling?
A: Please provide your coupling model, shaft size, or dimensional drawings/photos, and we will verify compatibility.

Q: Is this gear hub heat-treated?
A: Yes, it undergoes heat treatment to improve strength and wear resistance.

Q: Can this replace the original OEM coupling hub?
A: Yes, it is manufactured to OEM-equivalent standards and can be used as a direct replacement.

Q: Do you offer complete coupling sets?
A: Yes, we supply complete flange coupling assemblies, including hubs and rubber elements.