KBS Rollobend System
KBS Long-Radius Roller-Bearing Tubing Benders
Get Precise and Reproducible Bends on Electro-Polished Stainless Steel Tubing. For Ultra-High Purity UHP Thin-Wall Electro-Polished Stainless Steel Tubing.
KBS Tubing Benders
Bend Steel, Stainless Steel, Aluminum, Brass, Soft and Some Hard Copper and Titanium
- Each tool bends up to 180 degrees and large radius bends are ideal for preventing smooth inside walls from cracking, flaking and generating particulate contamination.
- The open side slips over the tubing at any point. You get smooth long bends with no marking, scraping or flattening.
- No need to figure spring-back – it’s been done for you.

About Us
In the mid 1980's a well known semi-conductor fabrication facility in silicon valley was experiencing a 40% rejection rate of their chips due to particulate contamination in their process piping caused by bending tubing with standard radius tubing benders.
A contractor installing the process lines was asked if he could come up with a solution to the problem. After a couple of years of trial and error, the KBS Long-Radius Tubing Bender was invented and reduced the rejection rate from 40% to less than 10%. For a number of years now, KBS Long-Radius Tubing Benders have been required by all chip plants for contractors installing high-purity process piping.
Some of our high purity process piping installation customers include:
Dynamic Systems Inc.
John W. Danforth Co.
BMWC Constructors
Micron
Total Facility Systems
Harder Mechanical
Indexa USA
Charter Mechanical
JB Henderson Construction
H.T. Lyons
Apollo Mechanical
This system has been approved and used in major micro-electronic facilities and by contractors throughout the United States.
SPECIFICATIONS
For Application Assistance or to Order call (408) 499-4891
Standard Rollobend System, 2.50" radius*
1/4" tube OD x .035" wall thickness | 3/8" tube OD x .035" wall thickness | 1/2" tube OD x .049" wall thickness |
---|---|---|
Part # 4100 10X, 2.50" radius | Part # 6600 6.67X,2.50" radius | Part # 8500 5X, 2.50" radius |
Other Rollobend System Sizes, 1.25" - 5.00" radius
1/4" tube OD x .035" wall thickness | 3/8" tube OD x.035" wall thickness | 1/2" tube OD x.049" wall thickness |
---|---|---|
Part # 4500 5X, 1.25" radius | Part # 6500 5X, 1.87" radius | Part # 8400 4X, 2.00" radius |
Part # 4800 8X, 2.00" radius | Part # 6800 8X, 3.00" radius | Part # 8600 6X, 3.00" radius |
Part # 6100 10X, 3.75" radius | Part # 8100 10X, 5.00 radius |
*Recommended combination is #4100, #6600, #8500, maintaining even center-to-center distance.
These tubing benders are not for use with wall thicknesses heavier than the specification shown here, and are not designed for high-pressure hydraulic tube bending applications
BENDER MARKINGS AND INDICATORS




Quality Control/Quality Assurance
The rugged heavy-duty, high-quality industrial grade construction of the KBS Long Radius Tubing Benders makes them the best tubing benders available throughout the world.

