Start with the recline behaviour your chair needs. A synchro mechanism reclines seat and back together at roughly 2:1 and suits most task chairs. A knee-tilt moves the pivot forward so the user’s feet stay planted — the executive and conference choice. A multi-function unit adjusts seat and back angle independently for ergonomic programmes. The butterfly is the value option when you need a real tilt at a tight price.
Then fix the numbers: steel gauge (2.0–3.0 mm here), mounting pitch (200×200 or 160×200 mm), lock positions, and the BIFMA cycle target the finished chair must pass. We confirm all of it against your drawing before tooling.
Watermark-free shots of the actual parts that leave our line — shown alongside the dimensioned diagram so you can see the casting, plate and finish for yourself.
| Model | Steel plate | Lock | User load | Mount pitch |
|---|---|---|---|---|
| ZT-S7 Synchro | 2.5 mm | 4-pos + float | ≤ 136 kg | 200×200 / 160×200 |
| ZT-K Knee-Tilt | 3.0 mm | 5-pos | ≤ 150 kg | 200×200 |
| ZT-M Multi-Function | 2.5 mm | Infinite | ≤ 136 kg | 200×200 |
| ZT-B Butterfly | 2.0 mm | Upright + free | ≤ 120 kg | 160×200 |
Synchro mechanism with 2:1 seat-to-back recline, 4-position lock and adjustable back-stop. The workhorse for mid-to-high task chairs.
Forward pivot point keeps heels on the floor through recline — preferred for executive and conference seating.
Independent seat-angle and back-angle adjustment with seat-depth slider. For spec-driven ergonomic programmes.
Economical fixed-pivot tilt with tension and upright lock — built to hit price points on volume task chairs without dropping the load rating.
Email us the component, your target load or cycle rating and a monthly volume. An engineer replies within one business day.
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