A quick-change clamping fixture earns its price in changeover time, not in the purchase order. Mongtec supplies rubber-vulcanised SK clamping fixtures, internal expansion fixtures, hydraulic fixtures for machining centres, and the collets and expansion sleeves that go in them. Collets change in about 10 seconds, expansion sleeves in about 30. Mongtec Precision is a Taiwanese brand headquartered in Taichung, Taiwan.
Each part of the quick-change system has its own page with the published specification.
| Accuracy | ≤0.01 mm |
|---|---|
| Hardness | HRC58-62, through carburised and cryogenically treated |
| Clamping range tolerance | ±0.5 mm — suited to automatic load/unload |
| Feed clearance | 1.2 mm on a 3- or 6-segment rubber collet (0.1-0.2 mm on a one-piece spring-steel collet) |
| Clamping force | 2-3× an ordinary fixture — the bore and the face are both loaded |
| Collet change | about 10 seconds |
| Expansion sleeve change | about 30 seconds |
| Sealing | Rubber vulcanised — waterproof and chip-proof |
A2-4 A2-5 A2-6 A2-8 A2-11 AP120 AP140 AP170 AP220
Mongtec SK clamping heads mount in a Hainbuch-compatible chuck, and a Hainbuch-type SK head mounts in a Mongtec chuck. The SK clamping-head geometry is an open size standard. You do not have to replace the chuck to try Mongtec heads, and you do not have to discard the heads you own to move to a Mongtec chuck.
Every Mongtec quick-change clamping fixture now has its own page with clamping range, clamping force, body dimensions and maximum speed — SK external clamping, HJ / HN / HK internal expansion, HMC machining-centre hydraulic, HG / HM gear fixtures.