FH® Push Head + Chain Assembly | Continuous Furnace Drive System

FH® Push Head + Chain Assembly | Heavy-Duty Furnace Drive & Conveying System

Key Benefits

• Integrated Push Head + Chain System
  Designed as a complete assembly – perfect match between push head, chain attachments, and drive sprocket.
• High Push Force Capacity
  Reinforced push head design withstands high thrust loads – moves heavy tray stacks through furnace without bending or breaking.
• Heat & Wear Resistant
  High-temperature alloys and specialized heat treatment – resists thermal distortion, abrasion, and oxidation in furnace environments.
• Precision Chain Drive
  Precision-machined pins, bushings, and side plates – smooth engagement, reduced elongation, and long service life.
• Custom Configurations
  Any push head size, chain pitch, length, and attachment spacing – designed for your specific furnace layout and tray dimensions.

Technical Specifications

System Components

Why Choose FH® Push Head + Chain Assemblies?
1. Critical Role in Continuous Furnaces
The push head and chain assembly is the heart of a continuous push furnace drive system. Poor design leads to:

• Bent or broken push heads – furnace stoppage
• Chain elongation or failure – misalignment and jams
• Uneven tray movement – part damage or furnace refractory damage
• High maintenance downtime

FH® assemblies are engineered for reliability.

2. Material Selection Guide

3. Design Features

Applications
Furnace Types:

• Continuous push furnaces (hardening, carburizing)
• Roller hearth furnaces (push section)
• Mesh belt furnaces (heavy-duty drive)
• Walking beam furnaces (transfer mechanism)
• Tray return lines

Typical Parts Moved:

• Loaded baskets and trays
• Gear and shaft stacks
• Bearing rings
• Fastener trays

Material Grade Table:

Genuine Photos of FH® Heat Treatment Fixtures

Ordering Process

1. Provide:

• Furnace type and drive mechanism (sprocket, hydraulic, screw)
• Required push force (or tray load + number of trays)
• Operating temperature (inside furnace vs cool zone)
• Tray/basket dimensions and push interface
• Chain pitch and length required
• Attachment spacing (distance between push heads)

2. FH® proposes:

• Material recommendation for push head and chain
• Push head design (shape, wear pad, guide)
• Chain specification (pitch, attachments, heat treatment)
• CAD drawing for approval
• Price and lead time

3. Production: 15–25 working days

4. Delivery includes:

• Material test certificates
• Dimensional inspection report
• Assembly drawing and installation guide

FAQ:

Q1: What is the typical service life of a push head and chain assembly?
A: With proper lubrication and alignment: push head – 2–5 years depending on temperature and push force; chain – 3–7 years for furnace-grade materials. Regular inspection for wear, elongation, or bending is recommended every 6–12 months.

Q2: What material do you recommend for a 950°C carburizing furnace push head?
A: For 950°C carburizing atmosphere, we recommend 1.4849 for the push head – excellent creep strength and carburization resistance. For the chain inside the furnace, also use 1.4849 or 310S. For chain in the cool return line, heat-treated alloy steel is sufficient.

Q3: Can you match an existing push head that is no longer available?
A: Yes – reverse engineering available. Send us your worn push head or drawings. We will measure, recommend material upgrades if beneficial, and produce a direct replacement.

Q4: How do I know when the chain needs replacement?
A: Measure chain elongation. Replace when elongation exceeds 2–3% of original length. Also inspect for worn pins, cracked side plates, or seized links. FH® offers replacement chains with the same attachment spacing.

Q5: What is your warranty?
A: 12 months against manufacturing defects (weld cracks, material flaws, machining errors). Normal wear, chain elongation, and thermal fatigue are not covered – but FH® will recommend the right materials for your specific conditions to maximize life.