Teco Tube Expanders Company

TECO tube expanders are made from high quality alloy steels and are specially heat treated. The adjustable thrust collar incorporates a thrust bearing which eliminates frictional heating and possible tube end damage and makes these tools suitable for operation with electric or pneumatic power tools. The tube expanders in this catalogue cover the range of tubes from 1/4” O.D. - 20 Gauge to 4 1/2” O.D. - 2-18 Gauge. SPECIAL TUBE EXPANDERS Special Tube Expanders for any tube size and reach are manufactured to specification. TECO has manufactured for example a special tube expander with 3 1/4” O.D. and 12 feet reach for diesel engines. So do not hesitate to send your application for your specific need. MANDREL EXTENSION AND UNIVERSAL JOINTS These can be supplied as standard or special length with different square sizes. Mandrel extensions can be utilized in situations where there is not sufficient room available to use standard expanders with a drive unit, e.g. in water boxes of con­ densers etc. STANDARD REVERSIBLE THRUST/ COLLAR The models CH-800 and CH-1200 Tube Expanders are equipped with a reversible thrust collar. This is specially designed by TECO. This offers the possibility of using the collar flush or recessed for the front tube sheet (please specify required recess depth). When reversed, the collar is now suitable for the rear tube sheet acting as a flow-collar allowing the tube to be drawn outwards. This eliminates the need to precisely cut the tube to length before expanding. THRUST COLLARS The following different models of thrust collar can be supplied: a) recessed thrust collar instead of standard collar (depth of recess to be specified). b) adjustable recess thrust collar to bring the tubes automatically to the right position in relation to the tube sheet; from a flush fitting on the tube sheet to as much as a 3/8” protrusion can be achieved. c) small diameter collars, for the expansion of the outside row of tubes into waterboxes for example. d) for thin gauge tube a special thrust collar can be supplied to prevent the tube from becoming trapped between the rolls and the collar as there is a possibility of thin tube being drawn up inside the collar whilst rolling. CONSTRUCTION TECO tube expanders are of the self feeding and parallel rolling type. The taper feed angle ensures a uniform expansion and tightness of the tube. The rolls have a radius at both ends to avoid a sharp ridge inside the tube. TUBE SIZE INFORMATION Tube O.D. refers to the measured outside diameter of a tube. Tube I.D. refers to the measured inside diameter of a tube. Tube Gauge is Birmingham wire gauge (B.W.G.) of the wall thickness of the tube. Tube Expanders for Condensers, Heat Exchangers and Boilers COLLAR THRUST RACE THRUST RACE HOUSING NUT WITH SETSCREW STANDARD REVERSIBLE THRUST/COLLAR tube expanders company 3