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refurbished bitzer 4nfcy bus ac compressor  4 cylinder open type  for 7135m buses  oem replacement-0

Compressor

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Refurbished Bitzer 4NFCY Bus AC Compressor – 4-Cylinder Open-Type – For 7–13.5m Buses – OEM Replacement

  • Overview
  • Recommended Products

Product Commercial Terms

Minimum Order Quantity:

1

Price:

negotiable

Packaging Details:

1pc 1 carton

Delivery Time:

7 days against order confirmation

Payment Terms:

100% tt before shipment

Model Number:

4NFCY renewed

Product Description:

【Factory Overview – Real Refurbishment, Real Quality】

Refurbished Bitzer 4NFCY compressor – OEM replacement for bus air conditioning systems – Ready to ship

图片24.jpg

This refurbished Bitzer 4NFCY compressor is a high-reliability, 4-cylinder open-type reciprocating compressor specifically developed for medium and large-sized bus air conditioning systems. As a key product in Bitzer's mobile compressor series, it delivers stable performance and long service life, making it a preferred choice for bus fleet operators and repair workshops worldwide.

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Engineered for commercial passenger transport, this renewed compressor undergoes a full refurbishment process including complete disassembly, component inspection, replacement of worn parts, reassembly, and rigorous testing. It provides OEM replacement quality at a fraction of the cost of a new unit – ideal for fleet maintenance programs and budget-conscious operators.

Specifications:

Technical Data

SI

IP

Cylinder volume

647 cm³

39.4 CIR

Displacement (1450rpm)

56,2 m³/h

1986 CFH

Displacement (3000rpm)

116,4 m³/h

4110 CFH

No. of cylinder x bore x stroke

4 x 70 x 42mm

4 x 2.76 inch x 1.65 inch

Allowed speed range

500 .. 3500 1/min

500 .. 3500 1/min

Weight (without clutch)

33,0 kg

73.0 lb

Magnetic clutch 12V or 24V DC

LA16 (Option)

LA16 (Option)

Weight magnetic clutch

10 kg

22 lb

V-belts

2 x SPB

2 x SPB

Maximum pressure (LP/HP)

19 / 28 bar

275 / 403 psi

Connection suction line

35 mm - 1 3/8'

35 mm - 1 3/8'

Connection discharge line

35 mm - 1 3/8'

35 mm - 1 3/8'

Oil type R134a

BSE 55 (Option)

BSE 55 (Option)

Oil type R22

B5.2 (Standard)

B5.2 (Standard)

Oil charge

2,5 dm³

88 fl. Oz

Crankcase heater

70 W 12or 24V DC (Option)

70 W 12or 24V DC (Option)

Pressure relief valve

Standard

Standard

Oil drier

Option

Option

Capacity control

100-50% (Option)

100-50% (Option)


Structural Design

The 4NFCY adopts a 4-cylinder reciprocating structure which effectively reduces vibration and noise during operation, ensuring a quiet and comfortable environment for bus passengers and drivers. It is an open-type compressor designed to be belt-driven by the bus engine, equipped with a 12V or 24V electromagnetic clutch that enables flexible on-off control, helping to save energy and reduce the load on the vehicle engine.
The compact and lightweight design allows easy installation in different positions of the bus, such as roof-mounted and rear-mounted air conditioning units, without occupying excessive space.

Performance Parameters

The Bitzer 4NFCY exhibits outstanding stability across the full operating speed range of 500 to 3500 rpm, perfectly matching bus working conditions from idling to high-speed driving.

Speed

Displacement

1450 rpm

56.2 m³/h

3000 rpm

116.4 m³/h


This provides sufficient cooling and heating capacity to meet the needs of 7 to 13.5-meter buses. The compressor is compatible with R134a refrigerant, which is environmentally friendly and has excellent heat transfer performance, conforming to global environmental protection standards.

Applications

The 4NFCY is primarily used in air conditioning systems of various medium and large-sized buses:
Urban public transport buses
Tourist coaches
Intercity passenger buses
School buses
Double-deck buses
Compatible bus brands: Yutong, King Long, Higer, Zhongtong, Foton, BYD, Volvo, Mercedes-Benz, Hyundai
The compressor's anti-vibration and shock-resistant properties enable stable operation in harsh mobile environments – bumpy roads, extreme temperature changes, and severe working conditions.
Note: The 4NFCY is specifically designed for mobile air conditioning scenarios and is not suitable for stationary refrigeration equipment such as cold storage, industrial water chillers, household air conditioners, or passenger car AC systems.

Refurbishment Process – What Makes Our Renewed Compressors Reliable

Step

Process

Description

1

Incoming inspection

Visual check and initial performance test to assess refurbishment potential

2

Complete disassembly

Full teardown to individual components

3

Component cleaning

Ultrasonic cleaning of all reusable parts

4

Wear inspection

Measurement of cylinders, pistons, bearings, and shafts against OEM specs

5

Parts replacement

Replace worn seals, gaskets, bearings, and valves with new OEM-grade components

6

Reassembly

Professional assembly using standardized torque settings

7

Leak testing

Nitrogen pressure test – no refrigerant leaks tolerated

8

Performance testing

Run test on dedicated compressor test bench – cooling capacity and clutch engagement verified

9

Final inspection

Vibration, noise, and oil flow check before packing


Competitive Advantage

Comparison

Generic Refurbished

Our Renewed 4NFCY

Refurbishment process

Partial – only failed parts replaced

Full disassembly + 9-step process

Testing

Visual check only

100% performance test on test bench

Worn parts

May reuse damaged components

All worn parts replaced with new OEM-grade

Warranty

3–6 months

12 months

Lead time

Uncertain

7 days ready to ship

Fitment

May require modification

Direct OEM replacement

Documentation

None

Test report + refurbishment certificate provided


Specifications

Parameter

Details

Model

4NFCY (Refurbished)

Type

4-cylinder open-type reciprocating compressor

Cylinder volume

647 cm³ (39.4 CIR)

Displacement at 1450 rpm

56.2 m³/h (1986 CFH)

Displacement at 3000 rpm

116.4 m³/h (4110 CFH)

Cylinders (bore x stroke)

4 x 70 x 42 mm (4 x 2.76" x 1.65")

Allowed speed range

500 – 3500 rpm

Weight (without clutch)

33.0 kg (73.0 lb)

Magnetic clutch

LA16 – 12V or 24V DC (10 kg / 22 lb)

V-belts

2 x SPB

Max pressure (LP/HP)

19 / 28 bar (275 / 403 psi)

Suction line connection

35 mm – 1 3/8"

Discharge line connection

35 mm – 1 3/8"

Refrigerant

R134a (recommended)

Oil charge

2.5 dm³ (88 fl. Oz)

Crankcase heater

70W 12V or 24V DC (optional)

Capacity control

100-50% (optional)

Warranty

12 months


【Factory Tour – See Where Your Refurbished Compressors Are Rebuilt】

1. Workshop – Disassembly & Cleaning

图片26.jpg

Dedicated compressor refurbishment line for Bitzer 4NFCY and other bus AC compressors
Ultrasonic cleaning tanks for all reusable components
Component sorting and inspection stations – only parts meeting OEM specs are reused
Monthly processing capacity: 200+ refurbished compressors

2. Assembly Line – Reassembly & Testing

Subtitle: Compressor performance test – refurbished Bitzer 4NFCY on test bench for bus air conditioning
Professional reassembly with standardized torque settings and sealing procedures
100% nitrogen leak test – zero tolerance for refrigerant leaks
Dedicated compressor test bench – cooling capacity, clutch engagement, and vibration verified
Batch traceability labels applied to every unit with test date and results

3. Warehouse & Inventory – Ready to Ship

图片27.jpg

Finished goods storage – 100+ units of 4NFCY ready for global dispatch
Spare parts inventory – clutches, seals, bearings, valves, and gaskets
Organized bin system with part number labeling for easy picking
Export-ready packaging – each unit in individual carton with foam protection

Quality Assurance

Every refurbished 4NFCY compressor undergoes 100% testing before shipment:

Test

Standard

Leak test

Nitrogen pressure – no drop over 30 minutes

Clutch engagement

12V/24V function check

Running test

30 minutes on test bench at variable speeds

Cooling capacity

Verified against OEM spec range

Vibration test

Within acceptable limits for bus installation

Oil flow

Proper lubrication confirmed


Packaging & Shipping

1 PC per reinforced carton with anti-collision foam inserts
Moisture-proof inner wrapping
Export-standard palletizing for sea freight
Lead time: 7 days after order confirmation
Shipping: Sea freight (FCL/LCL), air freight, DHL, FedEx, UPS

Why Choose Our Refurbished Compressors?

Cost effective – 40–60% less than new OEM compressors
OEM replacement quality – fully refurbished to original specifications
Ready to ship – 7-day lead time for standard orders
12-month warranty – backed by our refurbishment process
Environmentally friendly – extending product lifecycle reduces waste

【Distributor & Agent Recruitment – Join Our Global Network】

We are actively recruiting overseas distributors, regional agents, and aftermarket partners for our complete range of Shacman heavy duty truck LED tail lights and commercial vehicle lighting products.

Why become our authorized agent?

Benefit

Description

Factory direct pricing

No middleman markup – save 20–30% compared to branded distributors

Exclusive territory protection

Defined regional exclusivity for qualified partners

Low MOQ for trial orders

Start with as few as 40 units – test your market before committing large volumes

Private label support

Custom branding, packaging, and part number labeling available

Technical documentation

Full product datasheets, installation guides, and wiring diagrams provided

After-sales support

12-month warranty + spare parts backup for your local customers

Marketing materials

Product images, specification sheets, and catalogs in multiple languages

Fast lead time

7–15 days for standard orders – keep your inventory lean


Ideal partners include:

Heavy duty truck parts distributors
Commercial vehicle aftermarket suppliers
Fleet maintenance service providers
Online auto parts retailers (eBay, Amazon, Alibaba, local e-commerce platforms)
Independent repair shop networks
Shacman truck dealerships and service centers
Available product lines for agents:
LED tail light assemblies (24V) for Shacman F3000/X3000/M3000/X5000 series
Wiring harness adapters for bulb-to-LED conversion
Complete range of bus and truck lighting components
Electric fans and blowers for commercial vehicles
Compressor spare parts for refrigerated trucks

How to apply:

Contact us with your:
Company name and market location
Current product lines and customer base
Estimated annual volume for truck lighting products
Warehousing and logistics capabilities
We will respond within 2 business days with a customized agency proposal, including pricing, territory definition, and sample order process.
Contact our agency team: [[email protected]]

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