ebm-papst 4856ZW AC Axial Fan – Professional Air Movement Solution

The ebm-papst 4856ZW represents a premium-grade AC axial fan within the renowned 4000Z series, specifically engineered for commercial HVAC and refrigeration applications. This German-engineered fan delivers exceptional airflow performance while maintaining quiet operation, making it ideal for noise-sensitive environments like supermarkets, restaurants, and office buildings.

Featuring a durable all-metal construction, the 4856ZW is built to withstand continuous operation in challenging conditions. Its optimized impeller design moves air efficiently parallel to the rotation axis, creating consistent airflow patterns essential for proper heat exchange in condenser and evaporator applications.

Technical Excellence

Performance Characteristics:

• Delivers high-volume airflow precisely where needed
• Maintains stable performance across operating temperature ranges
• Low vibration operation reduces wear on connected equipment
• Electrically optimized for stable performance with variable loads

Durability Features:

• Corrosion-resistant materials ensure long service life
• Protected motor windings resist moisture ingress
• Precision-balanced rotor assembly minimizes bearing wear
• Robust terminal connections withstand vibration

4856ZW Product Attributes

4000Z Series Overview

The 4000Z series represents ebm-papst’s commercial-grade AC axial fan platform, offering:

Series Characteristics:

• Size Range: Available from 80mm to 250mm frame sizes
• Voltage Options: 115VAC, 230VAC, and 277VAC variants
• Material Choices: Aluminum or galvanized steel housings
• Bearing Systems: Sleeve bearing or optional ball bearing configurations
• Performance Tiers: Standard and high-static pressure models

Typical Applications:

• Commercial refrigeration condensers
• HVAC air handlers
• Display case cooling systems
• Process cooling equipment
• Industrial ventilation

The series combines German engineering precision with rugged construction suitable for 24/7 operation. All models undergo stringent quality control testing to ensure consistent performance across all units.

Why Choose the 4856ZW?

Superior Engineering

Every 4856ZW fan benefits from ebm-papst’s 70+ years of air movement expertise. Computational fluid dynamics (CFD) optimizes the blade profile for maximum efficiency while reducing turbulence noise.

Reliable Performance

Tested to 50,000+ hours MTBF (Mean Time Between Failures) under normal operating conditions. The motor features automatic thermal overload protection for added safety.

Easy Integration

Standardized dimensions and mounting patterns allow for simple replacement of existing fans. The pre-tinned lead wires simplify electrical connections.

Environmental Compliance

Meets international standards including:

• RoHS compliance
• REACH chemical regulations
• UL/CSA electrical safety
• ERP energy efficiency directives

Technical Specifications Deep Dive

Airflow Performance

The 4856ZW delivers 48 CFM (1.36 m³/min) at zero static pressure, maintaining strong airflow even against system resistance. Advanced blade geometry creates a smooth airflow pattern with minimal turbulence.

Acoustic Profile

Engineered to operate at just 38 dB(A) at one meter distance – quieter than most conversation levels (60 dB). This makes it suitable for environments where noise reduction is critical.

Electrical Characteristics

• Start-up Current: <0.5A inrush
• Power Factor: >0.85 at rated load
• Insulation Class: B (130°C)

Mechanical Properties

• Impeller Material: Aluminum alloy with protective coating
• Frame Stiffness: Reinforced rib structure prevents distortion
• Mounting Points: 4 corrosion-resistant steel screw positions

Ideal Application Scenarios

Commercial Refrigeration

• Walk-in cooler/freezer condensers
• Display case airflow systems
• Ice machine cooling units

HVAC Systems

• Roof-top unit ventilation
• Fan coil air movement
• Heat pump outdoor units

Specialty Cooling

• Commercial kitchen exhaust assists
• Medical equipment cooling
• Laboratory instrument temperature control

Comparison With Similar Models

ebm-papst 4856ZW AC Axial Fan – Frequently Asked Questions

Q: How does the 4856ZW’s sleeve bearing compare to the 4856ZB’s ball bearing?

A: The standard 4856ZW uses sleeve bearings (50,000-hour lifespan), while the 4856ZB variant features ball bearings for extended 60,000-hour operation. The ZB model runs 2dB quieter (36dB vs 38dB) and handles higher temperatures (+80°C vs +70°C).

Q: Is there a 115V alternative to the 230V 4856ZW?

A: Yes, the 4856ZU provides identical performance specifications (48CFM/38dB) but operates at 115VAC, making it the North American voltage-compatible version of the 4856ZW.

Q: When should I choose the 4856ZH over the standard 4856ZW?

A: Opt for the 4856ZH high-speed variant when you need 52CFM airflow (vs 48CFM), accepting slightly higher noise (42dB vs 38dB). The standard 4856ZW remains ideal for balanced performance.

Q: What’s the difference between IP20-rated 4856ZW and IP54-rated variants?

A: While the 4856ZW has basic IP20 protection, the 4856ZD model offers IP54 dust/water resistance for harsh environments. Both maintain identical airflow (48CFM) and frame dimensions.

Q: How does this fan compare to other 4000Z series models?

A:

Q: Where is the 4856ZW fan commonly used?

A: Typical applications include:
Refrigerated display cases
Split-system air conditioner condensers
Walk-in cooler/freezer cooling units
Industrial enclosure ventilation

Q: Can the 4856ZW replace similar-sized axial fans?

A: Yes, its 80x80mm frame size complies with industry-standard dimensions, making it a direct replacement for many axial fans in condensers, air handlers, and refrigeration units.