EN
Complete Bock FK50 Series Remanufactured Bus AC Compressors – Comprehensive FK50/660, FK50/775, FK50/830 & FK50/980 Options for Commercial Fleet HVAC | 12V/24V R134a
- Overview
- Recommended Products
The Philosophy Behind Our Remanufacturing Excellence
In today’s global commercial transport landscape, supply chain stability and maintenance cost control are paramount. Hunan Weili Auto Parts Appliance Co., Ltd. bridges these needs with a state-of-the-art remanufacturing ecosystem. As a State-Certified High-Tech Enterprise and a recognized "S3N Little Giant" in China’s automotive sector, we don't just fix old compressors; we systematically reverse-engineer and rebuild them to outlast their original service life.
Our approach to the Bock FK50 series (including FK50/660, FK50/775, FK50/830, and FK50/980) is grounded in industrial precision. Rather than relying on cosmetic touch-ups, our multi-stage refurbishment protocol begins with comprehensive diagnostic testing on incoming cores. We then deploy robotic ultrasonic cleaning to strip away carbon deposits and internal contaminants. Damaged cylinder liners are precision-honed, and we mandate a complete renewal of every valve plate, gasket, bearing, and piston assembly using premium-grade components sourced from top-tier suppliers. This comprehensive engineering overhaul ensures that each compressor leaving our facility delivers optimal volumetric efficiency, lower vibration amplitudes, and sustained cooling reliability, making them an astute choice for cost-conscious fleet managers without compromising on passenger comfort.
Bock FK50 Series Technical Matrix
We provide a clear, data-driven overview of the entire FK50 family. This structured matrix allows your engineering and procurement departments to precisely select the ideal displacement for their specific fleet requirements.
| Type | FK50/660 | FK50/775 | FK50/830 | FK50/980 | |
| Nr.Of Cyl. | 6 | ||||
| Swept Volume(cm3) | 662 | 776 | 831 | 976 | |
| Displ.Volume(1450rpm) | 57.6 | 67.6 | 72.3 | 84.9 | |
| Weight | 42 | 41 | 43 | 42 | |
| Connections | Discharge Line DV mm/inch | 35/13/8 | 35/13/8 | 35/13/8 | 35/13/8 |
| Suction Line SV mm/inch | 2*35/13/8 | 2*35/13/8 | 2*35/13/8 | 2*35/13/8 | |
| Oil Charge Ltr. | 2.6 | ||||
| Inertia moment of the driving unit(kgm2) | 0.0047 | 0.0056 | |||
| Max.permssible pressure(LP/HP) | 19/28 bar | ||||
| Permissible range of rotation speeds | 500-35001/min | ||||
| Dimensions Length/Width/Height | 430*375*335 mm | ||||
| Lubrication | Oil pump | ||||
| Oil charge | 2,5 Ltr. | ||||
| Oil type R22 | FUCHS Reniso SP 46 | ||||
| Oil type R134a,R404a,R407c,R507 | FUCHS Reniso Triton SE 55 | ||||
Engineered Advantages of Our Rebuilt FK50 Series:
Smart Asset Management: Leveraging our advanced core recovery system, we offer a sustainable alternative that significantly lowers your spare parts acquisition budget while guaranteeing a service lifespan parallel to brand-new OEM units.
Refined Operational Mechanics: The stringent balancing and honing process we apply significantly reduces internal friction, which translates directly into decreased parasitic power losses and quieter cabin operation.
Leak-Proof Assurance: We fit upgraded high-temperature resistant FKM (Viton) oil seals across the series, preventing refrigerant bleed-out and protecting the internal mechanisms from moisture ingress.
Robust Production Capabilities & Recognized Certifications
At Hunan Weili, quality is not dictated by a single certificate, but embedded within our daily manufacturing cadence. We invite our international partners to review the industrial backbone supporting our products:
Accredited Engineering Excellence
IATF 16949:2016 Automotive Quality Management (The most stringent global standard required by automotive OEMs).
ISO 9001:2008 & CE / RoHS compliance, ensuring global acceptance in European and American markets.
National High-Tech Status and Provincial "S3N Little Giant" recognition, marking us as an innovator in Hunan’s auto parts landscape.
Independently Owned Technology: Our engineering department holds a robust patent portfolio featuring 4+6 Invention Patents, 17 Utility Model Patents, and 3 Design Patents.
Precision Factory & Full-Spectrum Testing
Manufacturing Base: Our 20,000+ square meter production campus is located in the Jiuhua National Economic Development Zone, Xiangtan, providing a stable and scalable manufacturing environment.
Advanced Machinery: We utilize fully automated CNC processing centers, high-frequency induction hardening equipment, and laser dynamic balancing instruments to ensure each re-machined core meets precise geometric tolerances.
In-House Verification Laboratory: Our testing center is equipped with advanced performance dynamometers, anechoic sound chambers, and extreme temperature environmental simulation cabinets. Every single remanufactured FK50 series compressor is individually tested on a real-time dynamometer to validate output pressure and thermal stability before being cleared for packaging.
Global Market Penetration: Our refurbished automotive HVAC components have been successfully integrated into transport fleets across over 50 countries, including major markets in the USA, Italy, Germany, South Korea, and the Middle East, generating an annual revenue of over 90 million RMB.
Integrated R&D & Technical Consortium
Founder & Core Leadership: Spearheaded by Mr. Yang Hao (Alumnus of The University of Manchester, UK). The technical strategy is guided by Mr. Hu Mengjiao, a distinguished researcher from the State Key Laboratory Center at Tsinghua University.
Academic Synergy: We maintain a continuous industry-academia cooperation framework with the College of Electrical and Information Engineering, Hunan University. This partnership focuses entirely on advancing thermal management technologies and next-generation compressor control systems for the evolving EV and hybrid markets.
Heritage of Expertise: Our in-house mechanical and electrical engineering team is composed of veterans who have previously held senior engineering roles at globally recognized automotive tier-1 suppliers, including Shanghai Brose Automotive and Nidec (Japan).
Wide-Ranging Vehicle Integration Scenarios
The versatile Bock FK50 rebuild series serves as the reliable heart of cooling systems across multiple heavy-duty applications:
Passenger Transport Sector: Extensively utilized in transit buses and touring coaches of major brands such as Yutong, King Long, Zhongtong, and Ankai, providing efficient cabin cooling in the warm climates of the Middle East, Southeast Asia, and Africa.
Construction & Heavy Equipment: Favored for installation in the climate-controlled cabins of giant earthmoving machinery like Zoomlion, SANY Group, XCMG, Sunward, and Liugong Aolan, where they withstand severe vibration and dust ingress without failure.
Cold Chain & Refrigerated Logistics: A reliable core component for refrigeration units integrated by global cold-chain leaders like Thermo King and Carrier, ensuring the safe transport of fresh food, dairy products, and temperature-sensitive medical vials.
Modern Thermal Management Needs: With the global shift toward electrification, our remanufactured cores are also being adapted for EV cabin climate control systems, energy storage facility cooling, hydrogen fuel cell thermal regulation, and rail transport auxiliary cooling.
Strategic Dealer & Global Distributor Program
Capitalizing on our strong manufacturing capabilities and robust global export channels, we are currently expanding our international footprint. We are actively seeking strategic alliances with heavy-duty commercial parts distributors, bus fleet maintenance workshops, cold-chain equipment installers, and international automotive aftermarket traders to become our Exclusive Regional Partners and Principal Dealers.
Compelling Partnership Highlights:
Sustainable Economics: As a direct production and refurbishment entity, we eliminate costly intermediaries. This provides our dealers with highly competitive wholesale pricing, allowing for substantial profit margins on every unit sold to local markets.
Logistical Responsiveness: Our fully stocked factory inventory and agile production lines enable us to prepare and dispatch standard models within 3 to 7 working days, providing a crucial competitive edge against long shipping delays.
Dedicated Technical Interface: We deploy a specialized bilingual (English/Chinese) technical support desk ready to assist you and your end-clients with installation nuances, system diagnostics, and cross-application customization.
Exclusive Market Safeguarding: We enforce a rigorous territorial management protocol. Partners signed under our exclusive distribution agreement are guaranteed absolute protection of their defined sales regions against unregulated cross-border supply.
Comprehensive Sales Enablement: We empower our partners with official IATF 16949 dealership authorization certificates, detailed catalogs, and specific marketing support to enhance your local brand reputation and trade fair presence.
If you have an established network in commercial automotive HVAC, or serve large-scale fleet maintenance operations, we invite you to initiate a conversation regarding a long-term, win-win dealership cooperation.
Global Contact Information
Hunan Weili Auto Parts Appliance Co., Ltd
Corporate Address: No. 28, Jili West Road, Jiuhua Economic Development Zone, Xiangtan City, Hunan Province, China
International Business Hotline (WhatsApp / WeChat): +86-18670382782
Direct Landline: +86-0731-82034997 / 82034998
E-Mail: [email protected]
Global Official Portals:
www.cooliparts.com (Global Core Remanufacturing & Sourcing Hub)
SEO Meta Description: Factory-direct remanufactured Bock FK50 series compressors (FK50/660, FK50/775, FK50/830, FK50/980). IATF 16949 certified heavy-duty bus AC cores for global fleets. 12V/24V R134a, rapid global shipping. International dealers warmly invited.
