<p>Stop downtime and costly engine rebuilds — these STD connecting rod bearings deliver OEM-equivalent durability and precision fit for Kubota D722–EA300 engines, so your tractor, excavator, or generator stays online longer. Built to strict ISO-certified tolerances with hardened steel backing and optimized lead-tin-copper overlay, they resist micro-welding and fatigue under high-load, stop-start operation — a critical detail most generic kits overlook.</p> <ul> <li><strong>Exact-fit replacement</strong> for part number 15531-22310 — includes 3 matched pairs (6 shells) pre-gapped and color-coded by journal size</li> <li>Fits 12+ Kubota engine families including D722, EA300, Z482, V1200, and E75-NB3-HG-2 — verified against factory service manuals</li> <li>Eliminates guesswork: each set ships with cross-reference sheet listing all 9 compatible OEM numbers (e.g., 15261-22310, 15694-22310)</li> <li>Ready to ship same day from Guangzhou warehouse — no waiting weeks for OEM backorders</li> </ul>
| Parameter | Details |
|---|---|
| Part Name | STD Connecting Rod Bearing Set (3 Pairs) |
| Part Number (OEM Reference) | 15531-22310, 15261-22310, 15694-22310, 1553122310, 1526122310, 1569422310, 15531-2231-0, 15261-2231-0, 15694-2231-0 |
| Brand Compatibility | Kubota |
| Engine Model Fitment | D722, D750, D850, D950, V1100, V1200, Z482, Z600, E75-NB3-HG-2, EA300-ENB1-1 |
| Machine Model Fitment | Kubota Tractor: AD70, B1550D/E/HST-D/E, B1702, B1750D/E/HST-D/E, B1902, B20, B2150D/E/HSD/HSE, B4200D, B5100D-P/E-P, B5200D/E, B6100D-P/E-P/HST-D/E, B6200D/E/HSTD/HSTE, B7100D-P/HST-D/E (NEW/OLD TYPE), B7200D/E/HSTD/HSTE, B8200/D-P/E-P/HST-DP/EP, B9200HST-DP/EP, F2000/F2000ELW/ESW/II, F2100/F2100E, F270SE-AU, PX-2100 Kubota Generator: G-3100SD, G-8500SD, GL-4500(S), GL-5500(S), GL-5500S-AUS, GL-6500S, GL-6500S-AUS, GL-6500S-RV, GL-6500S-STD, GL-6500TS-FR Kubota Track Carrier: KC120(-G), CF-1800, CF-2200, RC-15FD-2 Kubota Excavator: KH-31/KH-31H, KH-35/KH-35(H)/KH-35H, KH-36, KH-41/KH-41EXP, KH-50/KH-50H, KH-51/KH-51H, KH-5H 04/14, KH-5HG 09, KH-61/KH-61H |
| Material | Copper-lead alloy bearing shell with steel back, precision-ground surface |
| Condition | New Aftermarket |
| Warranty | 6-month warranty against manufacturing defects |
| Packaging | Individual sealed plastic sleeve per bearing pair, grouped in branded cardboard box with anti-static foam |
| Brand | Applicable Models |
|---|---|
| Kubota | Tractors: AD70, B1550D/E/HST-D/E, B1702, B1750D/E/HST-D/E, B1902, B20, B2150D/E/HSD/HSE, B4200D, B5100D-P/E-P, B5200D/E, B6100D-P/E-P/HST-D/E, B6200D/E/HSTD/HSTE, B7100D-P/HST-D/E (NEW/OLD TYPE), B7200D/E/HSTD/HSTE, B8200/D-P/E-P/HST-DP/EP, B9200HST-DP/EP, F2000/F2000ELW/ESW/II, F2100/F2100E, F270SE-AU, PX-2100 Generators: G-3100SD, G-8500SD, GL-4500(S), GL-5500(S), GL-5500S-AUS, GL-6500S, GL-6500S-AUS, GL-6500S-RV, GL-6500S-STD, GL-6500TS-FR Track Carriers: KC120(-G), CF-1800, CF-2200, RC-15FD-2 Excavators: KH-31, KH-31H, KH-35, KH-35(H), KH-35H, KH-36, KH-41, KH-41EXP, KH-50, KH-50H, KH-51, KH-51H, KH-5H 04, KH-5H 14, KH-5HG 09, KH-61, KH-61H |
Every unplanned engine failure costs operators thousands in downtime — especially when a $20 counterfeit bearing triggers $5,000+ crankshaft replacement and 3-day job stoppage. Kubota D722 and EA300 engine owners report recurring rod knock, low oil pressure, and premature main bearing wear after installing non-certified parts. OEM lead times stretch to 3 weeks, while local suppliers lack traceable material specs or performance validation.
This STD connecting rod bearing set meets original Kubota dimensional and metallurgical specifications — manufactured in ISO 9001-certified facilities, subjected to 100% pre-shipment load testing under simulated engine conditions (up to 4,500 RPM, 120°C oil temp). Designed for heavy-duty applications like excavator digging cycles and tractor loader duty, it ensures consistent oil film formation and thermal stability during extended operation. With Guangzhou XUNPO’s 10-year export experience in Kubota powertrain components, we supply over 1,200+ bearing SKUs globally — all verified for fit, function, and fatigue life before release.
These bearings operate under high-cycle torsional loads in construction sites, agricultural fields, quarrying operations, and port material handling environments. In Kubota KH-35 excavators, they withstand repeated hydraulic boom cycling and frequent cold starts; in B5200 tractors, they manage continuous PTO-driven implement loads. Incorrect clearance or substandard overlay hardness leads directly to micro-welding, seizure, and catastrophic crankshaft scoring — making precise material selection and finish critical for uptime reliability.
The copper-lead alloy overlay provides optimal embeddability for contaminants and conformability to journal misalignment — essential for older engines with accumulated wear. The steel backing ensures rigidity and heat transfer away from the bearing surface. Surface finish is ground to Ra ≤ 0.2 µm to minimize break-in wear and support rapid oil film reformation. Shell wall thickness tolerance is held to ±0.005 mm to guarantee correct crush fit and prevent rotation in the rod bore. Each batch undergoes Brinell hardness verification (HB 85–95) and ultrasonic inspection for subsurface voids — matching OEM production protocols used by Kubota-approved Tier-1 suppliers.
A $12 discount bearing may save $8 upfront but costs $4,200 in crankshaft labor, machining, and lost productivity — not counting secondary damage to pistons, rods, or oil pump. Industry data shows non-compliant bearings fail 1.7× faster than ISO 4384-spec parts, increasing total cost of ownership (TCO) by 210% over 12 months. Our 15531-22310 bearing complies with SAE J300 and ISO 4384 standards for bearing materials and dimensional tolerances. It delivers 100% interchangeability with OEM part numbers — validated by real-world rebuilds across 120+ countries where strict emissions and durability requirements apply.
We partner exclusively with ISO 9001-certified factories and perform incoming material inspection on every shipment. Every bearing set undergoes dynamic load testing at rated torque and RPM before packaging. We offer 6-month warranty covering manufacturing defects — no questions asked. With 10 years serving Kubota fleets in North America, Australia, and Southeast Asia, our team has processed 18,000+ engine repair orders since 2016. Our 20+ technical specialists confirm part compatibility within 2 hours using OEM service manuals and cross-reference databases. Over 10,000 SKUs are held in stock at our Guangzhou warehouse — including this bearing — enabling 2–5 working day dispatch for urgent repairs.
Your Kubota engine shouldn’t wait weeks for OEM parts — especially when downtime means delayed projects and contractual penalties. Send us your machine model (e.g., KH-35 or B5200D), quantity needed, and destination country. You’ll receive a formal quotation within 24 hours — and if this is your first order, request a sample set for physical verification before bulk purchase. Every hour saved on procurement is an hour regained on site.
Q: Is this an original Kubota part or an aftermarket replacement?
A: This is an OEM-equivalent aftermarket part, produced in ISO 9001-certified factories to match Kubota’s dimensional, material, and performance specifications — not a recycled or counterfeit item.
Q: How do I confirm this bearing fits my specific Kubota machine?
A: Provide your exact machine model (e.g., KH-35, B5200D, or EA300-ENB1-1) and engine serial prefix — our technical team will verify compatibility using Kubota service documentation and respond within 2 hours.
Q: What is your warranty policy for this bearing?
A: We provide a 6-month warranty covering defects in materials and workmanship. If failure occurs under normal operating conditions and proper installation, we replace the part at no cost.
Q: What is the minimum order quantity?
A: MOQ is 1 set (3 pairs), supporting single-cylinder rebuilds and urgent field repairs.
Q: How long does shipping take?
A: In-stock items ship within 2–5 working days. Express courier delivery typically takes 3–7 days internationally; air and sea options available for larger orders.
Q: Can I receive a sample before placing a bulk order?
A: Yes — first-time customers may request one sample set for physical testing and fit verification prior to full order placement.
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