NAAMS Trunnion Components
Freer Tool & Supply’s NAAMS trunnion components collection supports controlled pivoting and repeatable motion in welding, assembly, and automation tooling. Trunnion components are used to create stable rotational or pivot points for fixtures and mechanisms—helping improve alignment, reduce binding, and maintain consistent part positioning through repeated cycles in production environments.
For the full trunnion catalog, click on the link below.
NAAMS Trunnion Components Catalog
| Tolerances Unless Otherwise Specified |
||
|---|---|---|
| 0.0 | ± 0.3 | Place Machining |
| 0.00 | ± 0.08 | Between Machined Surfaces |
| ± 0.13 | To Screw Holes, Non-Accumulative | |
| ± 0.03 | Between Dowels in the Same Plane | |
| NAAMS Standards Trunnion Components |
||
|---|---|---|
| Cylinder Mounting Assemblies | ||
| NAAMS Code | Trunnion Block | Bearing |
| ACT101 | ACT140 | ACT121 |
| ACT102 | ACT140 | ACT122 |
| ACT103 | ACT140 | ACT123 |
| ACT104 | ACT140 | ACT124 |
| ACT105 | ACT140 | ACT125 |
| ACT106 | ACT140 | ACT126 |
| ACT107 | ACT140 | ACT127 |
| ACT108 | ACT140 | ACT128 |
| ACT111 | ACT141 | ACT131 |
| ACT112 | ACT141 | ACT132 |
| ACT113 | ACT141 | ACT133 |
| ACT114 | ACT141 | ACT134 |
| ACT115 | ACT141 | ACT135 |
| Trunnion Blocks | ||
| NAAMS Code | Dimensions | Thru Hole Dia. |
| ACT140 | 100 x 25 x 70mm | 28.0mm |
| ACT141 | 100 x 25 x 70mm | 41.0mm |
| ACT160 | 164 x 25mm | 28.0mm |
| Trunnion Bushings | ||
| NAAMS Code | I.D. (mm) | O.D. (mm) |
| ACT121 | 12 | 32 |
| ACT122 | 15 | 32 |
| ACT123 | 16 | 32 |
| ACT124 | 18 | 32 |
| ACT125 | 19.05 | 32 |
| ACT126 | 20 | 32 |
| ACT127 | 25 | 32 |
| ACT128 | 25.4 | 32 |
| ACT131 | 32 | 45 |
| ACT132 | 34.93 | 45 |
| ACT133 | 36 | 45 |
| ACT134 | 38.1 | 45 |
| ACT135 | 40 | 45 |
| Thrust Washers | ||
| NAAMS Code | I.D. (mm) | O.D. (mm) |
| ACT171 | 12 | 50.8 |
| ACT172 | 15 | 50.8 |
| ACT173 | 16 | 50.8 |
| ACT174 | 18 | 50.8 |
| ACT175 | 19.05 | 50.8 |
| ACT176 | 20 | 50.8 |
| ACT177 | 25 | 50.8 |
| ACT178 | 15.4 | 50.8 |
| ACT181 | 32 | 63.5 |
| ACT182 | 34.93 | 63.5 |
| ACT183 | 36 | 63.5 |
| ACT184 | 38.1 | 63.5 |
| ACT185 | 40 | 63.5 |
