Hino Driveshaft Center Support Bearing OEM 37230-1230

 OEM-grade Hino driveshaft center support bearing 37230-1230, 60 mm inner bore, fits Hino 500 Series and Ranger. IATF 16949 manufacturer. Request samples and a wholesale quotation.

A failing driveshaft center support bearing is one of the most common — and most overlooked — causes of vibration, driveline noise, and premature U-joint wear on Hino medium-duty trucks. Sitting between the front and rear sections of a two-piece propeller shaft, the center support bearing carries the shaft at mid-span, isolates rotational vibration from the chassis, and absorbs the axial and radial movement that the driveline sees under acceleration, braking, and loaded cornering. When the rubber damping element hardens or cracks, the symptoms appear quickly: a clunk on take-off, a low-frequency drone at 40–80 km/h, and accelerated wear on the universal joints upstream and downstream.

The Hino part numbered 37230-1230 is the center support bearing with a 60 mm inner bore, fitted to the Hino 500 Series (sold as Hino Ranger in many markets, and as Hino Lohan in parts of Southeast Asia). This guide explains what the part does, what to look for in a replacement, and how Hebei Huami New Material Technology Co., Ltd. — a 30-year specialist in commercial-vehicle rubber components — supports aftermarket distributors and small-to-medium OEMs in Europe, North America, and beyond.

Technical Overview: Structure, Material, and Performance

Structure

The 37230-1230 center support bearing is a three-part assembly. A pressed-steel mounting bracket bolts to the chassis cross-member; inside it sits a vulcanised natural-rubber damping ring; and at the core of the ring is a sealed double-row deep-groove ball bearing that carries the propshaft on a 60 mm journal. The rubber element is the working component — it allows a controlled few millimetres of radial and axial deflection so the driveshaft can move with the chassis without transmitting vibration into the cab.

Material specification

• Housing — cold-rolled steel (SPCC equivalent), 3.0–4.0 mm gauge depending on bracket geometry, phosphate-coated and electrostatic black-painted for corrosion resistance.

• Damping ring — high-resilience natural rubber compound, Shore A 55 ± 5, with anti-ozonant and antioxidant packages; service temperature –40 °C to +120 °C; compression set < 25 % after 70 h at 100 °C.

• Bearing — sealed deep-groove ball bearing, double lip seal, lithium-soap grease pre-packed for life; speed rating compatible with propshaft RPM at engine red-line in top gear.

• Bonding — hot vulcanisation between rubber and steel sleeve, peel-strength tested per batch to prevent delamination under cyclic load.

Key specifications

Performance advantages

• Vibration isolation. The tuned rubber stiffness damps first-order driveline excitation in the 30–80 Hz range, reducing booming noise in the cab.

• Misalignment tolerance. Allows up to ±3 mm radial and ±2 mm axial deflection without overloading the bearing races, accommodating chassis flex under full GVW.

• Fatigue life. Bench-tested to >5 million load cycles at ±150 N at 25 Hz with no visible cracking — equivalent to OE service life in typical commercial duty.

• Environmental resistance. Ozone aging (50 pphm, 40 °C, 96 h, 20 % strain): no cracks. Salt spray on housing (96 h ISO 9227): no red rust.

Frequently Asked Questions

1. How do I know the 37230-1230 in my Hino has failed?

The most reliable indicators are a metallic clunk when shifting between drive and reverse, a continuous low-frequency vibration that rises and falls with road speed (not engine speed), and visible cracking or separation in the rubber ring when the propshaft is inspected from below. A worn bearing will also show side-play when the propshaft is pried laterally by hand.

2. Will your 37230-1230 fit my truck without modification?

Yes. Our part is dimensionally cross-checked against the original Hino OE drawing — 60 mm inner bore, OE-matched bracket bolt pattern and bearing height. It is a direct drop-in replacement for any Hino model originally fitted with 37230-1230. We can also supply samples for fitment trial before a bulk order.

3. What is the difference between your product and a genuine Hino part?

Geometry and fit are identical. The differences are commercial: our product is supplied under our own brand or under your private label, at a wholesale price point that gives aftermarket and small-OEM customers a healthy margin while meeting OEM-grade durability targets. We do not market our product as a genuine Hino part and we do not use Hino trademarks on packaging.

4. Can you provide private-label or custom packaging?

Yes. Private-label printing on the bearing carton, multilingual instruction inserts, custom barcodes, and pallet-level shipping marks are all standard services. We routinely support European and North American distributors with neutral or branded packaging tailored to their channel.

5. What is the minimum order quantity and lead time?

Stocked items ship within 5–7 working days at MOQ 50 pcs. New production runs require MOQ 100 pcs, with a typical lead time of 25–35 days from PO confirmation depending on batch size and custom-packaging requirements. Sample orders (1–5 pcs) are available with short turnaround for engineering evaluation.

6. Which certifications and documents do you provide?

Our plant holds IATF 16949, ISO 9001, ISO 14001, ISO 45001, TÜV, and AEO certifications. For each shipment we can provide Certificate of Origin (CO or FORM E), Material Test Report, Commercial Invoice, Packing List, and on request REACH / SVHC declarations and MSDS for the rubber compound.

7. Do you offer engineering support for new vehicle programs?

Yes. For small-to-medium OEM programs we offer drawing review, sample tooling, PPAP-level documentation (Levels 2 and 3 by request), dynamic-balance and durability validation reports, and engineering-change support across the program life cycle.

8. How is the part packaged and shipped internationally?

Each bearing is sealed in an anti-corrosion polybag, then placed in a printed carton; cartons are palletised and stretch-wrapped on heat-treated wooden pallets compliant with ISPM 15. We ship FOB, CIF, or DDP on customer preference; air freight, sea freight, and rail freight to Europe are all routinely used.

9. Can I order a small trial batch first?

Yes. We strongly recommend a trial order of 50–100 pcs for first-time customers. This lets you validate fitment, quality, and packaging at limited financial exposure before committing to a container-level purchase.

10. Do you cross-reference other Hino center bearing numbers?

Yes. Our 60 mm Hino center bearing family is cross-referenced to neighbouring OE numbers in the 37230- and 37235- series. Send us your application or vehicle VIN range and we will confirm the correct part number and any available equivalents in stock.

Request a Sample or Quotation

Hebei Huami New Material Technology Co., Ltd. is a specialist manufacturer of rubber damping, sealing, and suspension components for commercial vehicles, with over 30 years of OEM supply experience and a full portfolio of international quality certifications. We supply aftermarket distributors, fleet workshops, and small-to-medium OEM programs across Europe, North America, the Middle East, Africa, and Latin America.

To request a free sample of the Hino 37230-1230 center support bearing, an updated price list, a full catalogue of our Hino center bearing range, or technical drawings for evaluation, contact our international sales team. We typically respond within one working day.