الوصف
The CAT307 center joint lower assembly is a direct replacement swivel joint for the Caterpillar 307 excavator. It connects the upper hydraulic system to the lower frame, routing oil to the travel motor and dozer blade circuits while allowing full 360-degree rotation without hose twisting.
Manufactured from high-grade alloy steel and machined to OEM specifications, this unit delivers exact port alignment, matching bolt patterns, and correct seal configuration for a bolt-on installation. Each assembly is pressure-tested at the factory before shipment and backed by a 6-month warranty.
الميزات الرئيسية
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Alloy steel body with chrome-plated internal spindles for corrosion resistance and smooth oil flow
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Pre-installed polyurethane and NBR seals, lubricated and ready to mount — no extra seal kit needed
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CNC-machined mounting flange and port positions matching OEM drawings directly
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Multi-circuit pressure-tested before crating (rated working pressure up to 37 MPa)
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Packed in VCI anti-rust film and ISPM-15 fumigated wooden crate for long-distance shipping
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Name | CAT307 Center Joint Lower Assembly |
| Excavator Model | Caterpillar 307 |
| Category | وصلة مركزية/وصلة دوارة/مشترك دوّار/مشترك دوّار |
| Body Material | سبائك الصلب |
| Spindle Surface | مطلي بالكروم الصلب |
| Seal Material | البولي يوريثين (البولي يوريثين) و NBR |
| Working Pressure | حتى 37 ميجا باسكال (5,366 رطل لكل بوصة مربعة) |
| Warranty | 6 أشهر |
| MOQ | 1 قطعة |
| Price | قابل للتفاوض |
| Supply Ability | 1,000 قطعة شهرياً |
| Packaging | Standard Fumigated Wooden Crate |
| Delivery Time | 1-5 أيام عمل |
| Payment Terms | تي/تي، XT، باي بال، ويسترن يونيون |
| Shipping Options | الشحن البحري، الشحن الجوي، الشحن الجوي، الشحن السريع (DHL/FedEx/UPS) |
| Place of Origin | الصين |
التطبيقات
Designed for the hydraulic system of Caterpillar 307 crawler excavators. Commonly replaced during:
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إصلاحات النظام الهيدروليكي
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Center joint seal failure and external oil leakage
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Internal cross-port leakage causing slow travel, swing drift, or weak blade function
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Preventive maintenance at high-hour intervals
Suitable for machinery repair shops, construction, mining, energy, equipment rental fleets, and retail.
التعبئة والتغليف والشحن
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مغلفة بغشاء مضاد للصدأ VCI لحماية الأسطح المشغولة آليًا
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مبطن برغوة عالية الكثافة لامتصاص الصدمات
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مؤمّن في صندوق خشبي مدخّن معالج بالتبخير ISPM-15 كمعيار قياسي
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تتوفر عبوات مخصصة حسب الطلب
Shipping methods: Express (3–7 business days), Air Freight, or Sea Freight. Orders confirmed before 12:00 PM CST typically dispatch the same day when in stock.
الأسئلة الشائعة
Q: How do I confirm this fits my CAT307?
A: Provide your machine serial number or current center joint OEM part number. Our technicians cross-reference it before shipping.
س: هل الأختام مثبتة مسبقاً؟
A: Yes. All seals come fitted and lubricated. Mount the assembly and connect hydraulic lines directly.
سؤال: ماذا لو تعطّل الجزء خلال فترة الضمان؟
A: Send us installation photos, an operation video, and a fault description. Three senior technicians will review your case. If it’s a quality defect, we replace or refund the part.
س: هل يمكنني طلب قطعة واحدة فقط؟
A: Yes. MOQ is 1 piece. Emergency single orders and bulk fleet purchases receive the same service commitment.
س: هل تقدمون دعم التثبيت؟
A: Yes. We can supply the relevant service manual pages, torque specifications, and installation tips.
س: كيف يتم حماية الجزء أثناء الشحن؟
A: Vacuum-sealed in anti-rust film, packed in high-density foam, and crated in ISPM-15 export-grade wooden box.
س: ما هي طرق الدفع التي تقبلونها؟
A: T/T, XT, PayPal, and Western Union. L/C options are available for larger orders.
Get a Quote
Send us your CAT307 serial number or current part number. We confirm stock and return a firm quote within hours. Same-day dispatch available for all in-stock items.
