The 800 Series Tube Expander is a mechanical rolling-type tube expander that works by cold-forming the tube material outward. This creates a tight, leak-proof joint between the tube and the tube sheet, ensuring strong mechanical bonding without welding. The tool typically uses a 3-roller mechanism (or optional 5-roller version) and is driven by manual, pneumatic, or electric tube rolling machines. It ensures uniform expansion without damaging the tube.
Key Features :
• Mechanical expansion principle: Uses rollers and a mandrel to expand tube walls outward.
• Leak-proof joints: Ensures secure sealing in tube sheets.
• Cold working process: Improves joint strength without heat input.
• Simple and reliable design: Suitable for manual, pneumatic, or powered drives (typical for such expanders).
Typical Technical Range (Industry Standard for 800 Series) :
• Tube Outer Diameter Range: 1/2″ to 1-1/2″ (12.7–38.1 mm)
• Tube Sheet Thickness:
a. 1/2″ to 1-1/2″ (with 1-1/2″ rollers)
b. 1-1/4″ to 2-1/4″ (with 2-1/4″ rollers)
• Roller Options: 1-1/2″ or 2-1/4″ length
• Design: 3-Roll adjustable depth expander
• Drive: Mandrel with square drive for tube rolling motor
• Collar Design: Reversible thrust collar for flush or recessed tube rolling
Applications :
The 800 Series Tube Expander is widely used in industries such as:
• Heat exchangers
• Surface condensers
• Power plant boilers and pressure vessels
• Oil coolers
• Chillers and HVAC systems
• Feedwater heaters
• Chemical and refinery equipment
• Industrial tube installation and maintenance
The 800 Series is considered one of the most commonly used general-purpose tube expanders worldwide, especially for medium tube sizes.
Advantages :
• High reliability and durability
• Uniform tube expansion
• Compatible with various tube materials
• Easy maintenance and interchangeable components
In Summery, 800 Series Tube Expander is one of the most commonly used tube expanders worldwide for medium-size tubes and This standard industrial tool is designed for used to expand tubes securely into tube sheets in heat-transfer equipment. It supports tube sizes from 1/2″ to 1-1/2″ OD, offers adjustable roller lengths, and ensures strong, leak-free joints. Due to its precision, versatility, and durability, it is one of the most widely used expanders in maintenance and manufacturing of heat exchangers and condensers.
