Baumannflex (Metal Coil Spring Coupling)
This coupling connects the hubs mounted on the shaft using metal coil springs, delivering excellent flexibility along with a compact design and high torque. The product line includes the Baumann MiniFlex, which is designed for relatively low torque applications; the Baumann Flex MM, intended for shaft-to-shaft connections; and the Baumann Flex MF, designed for connecting shafts to flanges and other components.
| ZG Model | LM Model | LM Long Type | MM Model | MM[S] Stainless Steel Type | MF Model | |
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| Specifications | This ZG model features relatively low operating torque and excellent flexibility. The coil springs are made of spring steel. | This is an LM model designed for relatively low operating torque; the hub is made of aluminum alloy, and the coil springs are made of stainless steel. | Even among the LM models, which have relatively low operating torque, the long type can accommodate a misalignment of up to 14°. | This flexible coupling features a three-layer coil spring structure, enabling compact design and high-torque transmission. | Unlike the standard model, which is made of steel, this version features a stainless steel hub and coil for enhanced corrosion resistance. | This model retains the three-layer structure of the coil spring section but features a flanged hub on one side, making it a versatile design. |
| Operating torque [N·m] | 0.15–1.5 | 0.5–2.0 | 0.5–2.0 | 2.5–220 | 2.5–90 | 5–220 |
| Outer diameter [mm] | 12–26 | 14–26 | 14–26 | 16–75 | 17–55 | Hub 21–75 / Flange 42–100 |
| Maximum RPM [min⁻¹] | 3,000 | 6,000 | 6,000 | 20,000–4,500 | 20,000–6,000 | |
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