If you are going to use Lego pneumatic parts in your design, it may be worth considering the technical specifications of some of the Lego Pneumatic parts. In most cases - this is not a worry but who knows when these figures may come in handy?
We have here SI and imperial references. Remember that these figures may vary slightly between items - and have been somewhat averaged.
| Large cylinder | Small cylinder | |
|---|---|---|
| Part Number | 2793 | x189 |
| Bore diameter inches(mm) | .472(11.98) | .229(5.827) |
| Ram diameter inches(mm) | .196(4.953) | .125(3.175) |
| Stroke inches(mm) | 1.101(27.965) | .595(15.113) |
| Extend | ||
| Area sq. in.(sq. mm) | .175(112.903) | .041(26.451) |
| Force @ 50 psi in lbs(kg) | 8.75(3.969) | 2.06(0.934) |
| Force @ 10 psi in lbs(kg) | 1.75(0.794) | .41(0.186) |
| Displacement in cu. in.(ml) | .193(3.1627) | .025(0.4097) |
| Retract | ||
| Area sq. in.(sq. mm) | .145(93.5482) | .029(18.7096) |
| Force @ 50 psi in lbs(kg) | 7.24(3.2840) | 1.45(0.6577) |
| Force @ 10 psi in lbs(kg) | 1.45(0.6577) | .29(0.1315) |
| Displacement in cu. in.(ml) | .159(2.605) | .017(0.2786) |