Tolerances
A Precise Inside Diameter without Expensive and Time-Consuming Honing
Amalga Composites’ precision tooling provides the close-tolerance pressure tubing you demand. Our cylinder tubing features the following inside diameter characteristics to improve piston performance.
| INSIDE DIAMETER SIZE RANGE – (All in inches) | TOLERANCE |
|---|---|
| Greater than 1.00 to 3.25 | Plus .005 minus .000 |
| Greater than 3.25 to 6.00 | Plus .006 minus .000 |
| Greater than 6.00 to 8.00 | Plus .008 minus .000 |
| Greater than 8.00 to 10.00 | Plus .010 minus .000 |
| Greater than 10.00 to 14.00 | Plus .015 minus .000 |
| Greater than 14.00 to 20.00 | Plus .020 minus .000 |
| Greater than 20.00 to 30.00 | Plus .025 minus .000 |
| Micro-inch bore finish: 15 Ra Straightness: .001 per foot | Circularity: 0.002 Inches Cylindricity: 0.002 Inches |
Machining to Blueprint Specifications
Outside-diameter grinding
Amalga Composites uses centerless grinding as the standard finishing process for outside diameters.
Closer tolerances are available upon request.
| OUTSIDE DIAMETER SIZE RANGE – (All in inches) | TOLERANCE |
|---|---|
| Greater than 1.00 to 2.50 | Plus .006 minus .000 |
| Greater than 2.50 to 5.25 | Plus .010 minus .000 |
| Greater than 5.25 to 8.25 | Plus .012 minus .000 |
| Greater than 8.25 to 14.50 | Plus .025 minus .005 |
| Greater than 14.50 to 20.50 | Plus .030 minus .010 |
| Greater than 20.50 to 32.00 | Plus .040 minus .010 |
| Surface Finish: 125 Ra | Circularity: 0.010 |
| Concentricity: 0.010 | Concentricity: 0.010 |
Cutting
Composite tubing produced by Amalga Composites can be cut to blueprint-specified lengths using a horizontal stroke or abrasive cut-off saw (depending on the diameter).
Chamfers, Shoulders and Grooves
Amalga Composites offers cylinder bodies that are completely machined and ready for assembly.
