elliott-tool 40 SERIES Straight Boiler Expanders 40-20102

elliott-tool 40 SERIES Straight Boiler Expanders 40-20102  Elliott’s 40 Series Straight Boiler Expanders are 
recommended for re-rolling leaky tube joints in firetube 
boilers. Self-feeding, these expanders should primarily be 
used by hand. 
The guard prong is 1/2” (12.7mm) long, allowing you to roll 
boiler tubes with a projection, while also controlling the 
mandrel feed to prevent over-rolling. 
The bronze bearing between the expander’s frame and 
guard reduces friction and allows for torque controlled tube 
rolling.
Outside Tube
Diameter
and BWG
Features & Benefits:
• Only for re-rolling leaky tube joints in firetube boilers.
• Tapered expansion aggressively seals leaky joints allowing 
for quick cycle time.
• Guard prong accommodates tube projections, allowing 
you to roll boiler tubes with projection while controlling the 
mandrel feed.
• An economical, durable tool.
Mandrels are sold separately.
Spares & Accessories: 
• Drum Mandrel
• Roll Set
• Tube Rolling Lubricant See page 19 for part numbers