Crane and mobile-cab RFQs that specify operator seat armrest joystick mounting fail when the stick bolt pattern, adapter plate thickness, and operator reach envelope are treated as afterthoughts — JR Merritt and GS Global Resources chair/armrest programs repeatedly document plate geometry and vibration isolation ahead of grip selection [Source: JR Merritt operator chair / armrest control mounting literature; GS Global Resources seat and armrest control packaging guides]. Trunsin AT16 and AT20 masters mount to custom armrest plates or standalone pulpits once axis count and hole pattern are frozen.
See chair context on crane operator chair joystick, KST layouts on KST crane control joystick, axis specs on multi-axis crane joystick spec checklist, and field swaps on overhead crane joystick replacement.
Operator seat armrest joystick mounting — adapter and reach table
| Element | Typical ask | RFQ check |
|---|---|---|
| Adapter plate | Match seat OEM hole pattern | Plate drawing + stick footprint |
| Reach envelope | Neutral at relaxed elbow | 5th–95th percentile mock-up |
| Vibration path | Isolate armrest from cab floor | Elastomer / seat OEM kit |
| Axis count | Hoist / trolley / slew (+ aux) | AT16 vs AT20 map |
Skipping operator seat armrest joystick mounting geometry produces shoulder fatigue, unintended axis travel, and cracked mounts long before the Hall sensors fail [Source: JR Merritt and GS Global Resources ergonomics packaging notes].
Mounting and commission checklist
- Freeze plate drawing to stick footprint — AT16/AT20 hole pattern on RFQ.
- Validate reach at neutral — chair post — crane operator chair.
- Axis map vs KST-style layouts — KST crane control; checklist on multi-axis spec.
- Replacement path — overhead crane replacement.
Frequently asked questions
Do AT16 and AT20 share one adapter plate?
Not always — confirm footprint and depth before cutting steel; send both drawings on RFQ.
Can we reuse a JR Merritt / GS plate with Trunsin sticks?
Often yes with a custom adapter — provide OEM plate CAD and stick outline for review.
Armrest mount vs standalone pulpit?
Armrest for seated crane duty; pulpit when reach or dual-operator layout demands separation.
When choose AT20 over AT16?
Higher axis density or larger grip packages — freeze axis list first on the multi-axis checklist.
Related articles
- Crane operator chair joystick
- KST crane control joystick
- Multi-axis crane joystick spec checklist
- Overhead crane joystick replacement
- Industrial joystick hub
- Configurator
Request armrest mount RFQ
- Seat OEM / plate drawing or hole pattern photo
- Axis list (hoist, trolley, slew, aux)
- Configure AT16 or AT20
- Cab vibration / IP duty notes