Auto Wheel & Tractor Bearing 44300S5A008 (38-1256) | Double Row Ball Bearing 43×79×38/41mm — Wheel Hub & Agricultural Tractor, OEM & Wholesale Supply

Understanding the 44300S5A008 Part Number

The 44300S series is a Chinese national standard (GB) double row sealed ball bearing series widely used in domestic agricultural machinery and light vehicle wheel hub applications. The 5A008 suffix distinguishes this variant from the 47008 suffix used in the related 44300S47008 — both belong to the same 44300S series but serve different hub configurations. Contact our technical team for full specification documentation.

Dual Width Specification Explained: 38mm vs 41mm

Always specify both width values ( 38/41mm) when ordering or cross-referencing to ensure correct fitment. A bearing listed as only 38mm or only 41mm wide may be a different variant.

44300S5A008 vs 44300S47008 — Same Series, Different Configurations

A critical distinction for buyers sourcing from the 44300S series:

⚠️ Both bearings belong to the 44300S series but are not interchangeable — they have different bore sizes (43mm vs 45mm), outer diameters (79mm vs 84mm), and suffix configurations. Always match the bearing to your hub shaft diameter. Contact our technical team to confirm the correct variant for your application.

Complete Tractor & Auto Wheel Hub Bearing Range — 38 / 43 / 45mm Bore Series

Nexans Bearings supplies the full size range of double row sealed ball bearings for tractor and auto wheel hub applications:

✅ Nexans Bearings supplies all three sizes — source your complete tractor/auto wheel hub bearing range from a single supplier. Contact us for a combined quote across all three part numbers.

Selection guide: Match the bearing inner diameter (bore) to your hub shaft size: 38mm shaft → 9036338006 / 43mm shaft → 44300S5A008 / 45mm shaft → 44300S47008.

Cross Reference Numbers

Contact our technical team with your application details for confirmed international cross-references.

Vehicle & Equipment Compatibility

The 44300S5A008 double row ball bearing is used across a range of automotive and agricultural equipment wheel hub applications requiring a 43mm bore:

Please confirm exact fitment using part number 44300S5A008 or contact our technical team with your equipment make, model, and year.

Why Double Row Ball Bearings for Tractor & Auto Wheel Hubs

Product Overview

The 44300S5A008 is a sealed double row deep groove ball bearing manufactured to OE-equivalent specifications for automotive wheel hub and agricultural tractor hub applications. With a 43mm bore, 79mm outer diameter, and 38/41mm width, it occupies the mid-range position in Nexans Bearings' complete tractor/auto wheel hub bearing series — between the 9036338006 (38mm bore) and the 44300S47008 (45mm bore).

At 800g, the 44300S5A008 is the most substantial bearing in the series, reflecting its robust construction for demanding mid-range hub applications. The 5A008 suffix distinguishes this configuration from the related 44300S47008 (47008 suffix) within the same 44300S series.

This bearing delivers:

• High radial and axial load capacity — double row ball arrangement handles the combined loads of loaded tractor and vehicle wheel hubs

• Moment load resistance — double row geometry resists tilting forces from uneven terrain and field operation

• Superior contamination resistance — sealed construction blocks dust, mud, and moisture in agricultural and road environments

• Excellent grease retention — factory pre-lubricated, sealed for life under normal operating conditions

• Compact single-unit design — replaces two separate single row bearings in a single, easy-to-install assembly

• Robust 800g construction — heavier build reflects enhanced structural integrity for demanding hub applications

• OE-equivalent fit — manufactured to GB/OE specification for direct replacement of 44300S5A008

• Chrome steel durability — GCr15 / 52100 material provides high hardness, wear resistance, and fatigue strength

Sourced from Nexans Bearings' trusted manufacturing network — including leading Chinese bearing brands QC, C&U, ZWZ, TWB, and ZWA — every unit undergoes strict dimensional and quality inspection before dispatch.

Why Source from Nexans Bearings

OEM & Private Label Service

Nexans Bearings provides a complete OEM and private-label program for agricultural machinery and automotive parts distributors:

• Custom Packaging Design — your brand, your box, your label

• Laser Marking — part numbers (44300S5A008) and logos etched directly on the bearing

• GB / OE Spec Matching — dimensional validation against OEM specification

• Clearance & Grade Selection — specify C0/C2/C3 clearance and P0–P5 precision grade per your application

• Flexible MOQ — suitable for startups and established importers alike

• Full Documentation — inspection reports, material certificates, and packing specifications per order

• Dedicated Account Management — assigned support for OEM and high-volume clients

Frequently Asked Questions

Q: What are all the part numbers for this bearing?

This bearing is referenced as 44300S5A008 (full part number / GB standard) and 38-1256 (NKS reference). The 44300S is the bearing series; 5A008 is the specific configuration suffix.

Q: What are the exact dimensions of the 44300S5A008?

The dimensions are: Inner Diameter 43mm × Outer Diameter 79mm × Width 38/41mm. The dual width (38mm inner ring / 41mm overall) must both be confirmed when ordering or cross-referencing.

Q: What does the "38/41mm" dual width mean?

The 38mm is the inner ring width; the 41mm is the total assembly width including the outer ring, seals, and retaining features. Always specify both values when ordering to ensure correct fitment.

Q: What is the difference between 44300S5A008 and 44300S47008?

Both belong to the 44300S series but are different sizes and configurations: 44300S5A008 has a 43mm bore and 79mm OD (5A008 suffix), while 44300S47008 has a 45mm bore and 84mm OD (47008 suffix). They are not interchangeable. Always match the bearing bore to your hub shaft diameter.

Q: How do I choose between 9036338006, 44300S5A008, and 44300S47008?

Match the bearing inner diameter (bore) to your hub shaft size: 38mm shaft → 9036338006 / 43mm shaft → 44300S5A008 / 45mm shaft → 44300S47008. Contact our technical team to confirm the correct bearing for your specific equipment.

Q: What equipment uses the 44300S5A008 bearing?

This bearing is used in medium agricultural tractor wheel hubs and light-to-medium commercial vehicle wheel hub assemblies with a 43mm bore. Contact us with your equipment make and model to confirm exact fitment.

Q: Why does the 44300S5A008 weigh 800g?

At 800g, the 44300S5A008 is the heaviest bearing in this series, reflecting its robust double row construction with a 43mm bore and 79mm OD. The substantial weight indicates a heavy-duty build suitable for demanding tractor and vehicle hub applications.

Q: Is the 44300S5A008 pre-lubricated?

Yes. The bearing is factory pre-lubricated with grease and sealed on both sides. Under normal operating conditions, no relubrication is required during the bearing's service life.

Q: Do you supply the complete range of tractor wheel hub bearings?

Yes. Nexans Bearings supplies all three sizes: 9036338006 (38mm bore), 44300S5A008 (43mm bore), and 44300S47008 (45mm bore). Contact us for a combined quote across the full range.

Q: Do you offer OEM or private label for this bearing?

Yes. We provide full OEM and private-label services including custom packaging, laser-etched branding, and GB-compliant documentation. Contact our sales team to discuss your requirements and MOQ.

Q: What is the minimum order quantity (MOQ)?

MOQ is flexible and negotiable. We welcome both trial orders and large-volume contracts. Contact us for a tailored quote.

Q: How quickly can you ship?

We maintain ready stock of agricultural and automotive wheel hub bearings including the 44300S5A008. Orders are typically dispatched within 3–7 business days. Expedited shipping is available upon request.

Q: Do you provide quality certifications?

Yes — dimensional inspection reports, material certificates, and packing specifications are available upon request for every order.

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