Edmund Bühler SM 30 — load / speed limits
PDF · Manufacturer document
Considering maximum load and speed independently can mislead shaker selection. The manufacturer guide combines them and distinguishes model, stroke, motion and rack layers. Only the cell matching all conditions gives the reference load for that combination.[1]
Treat load as a conditional value
Identify the model and motion, stroke, rack type and layers, then the target speed. The same model does not retain its original maximum load after changing stroke or adding layers.
The SM 30 guide has single-layer conditions for Combifix SM or the Universal Tray SM and a separate table for the two-storey rack. They are not interchangeable. Switchable-motion models also require attention to the motion symbols.[1]
Permissible load may fall as speed rises
The excerpt below illustrates how to read the table, not a complete operating schedule. It refers to SM 30 A at a 26 mm stroke with two rack arrangements.[1]
| Speed (rpm) | Single-layer Combifix SM / Universal Tray SM: reference maximum load (kg) | Two-storey rack SM: reference maximum load (kg) |
|---|---|---|
| 200 | 30 | 20 |
| 240 | 15 | 8 |
| 260 | 10 | 2 |
| 300 | 5 | Not permitted |
Changing from one to two layers changes permissible load–speed combinations. Additional loading positions do not imply greater load capacity at the original speed.
Dedicated bottle tables show the same need for conditions
The SM 30 B control beer-bottle table specifies a 50 mm stroke and distinguishes one, two and three layers. At 180 rpm, reference loads are 30 kg for one layer and 15 kg for two; three layers are not permitted.[2]
This is not a statement that every SM 30 B configuration supports 30 kg at 180 rpm. Dedicated bottle-rack tables must be read for their purpose and arrangement, not substituted for other rack tables.
A prohibited region is not a missing value
Red blocks mark combinations that are not allowed. Do not interpret them as missing parameters or fill them with neighbouring values.
The manufacturer describes approximate guidance values that can vary slightly with the shaken material. Do not turn them into unconditional guarantees or interpolate operating combinations absent from the original table.[1][2]
Confirm trays, frames and sample fixation separately
Assembly is a prerequisite for reading the load table. A universal tray, surrounding frame and vessel clamps are not necessarily one supplied component merely because they appear together in a photograph. Confirm fixation and supply scope for the model and accessories.
For applications at the stated maximum load, both guides recommend securing the shaker to the bench or floor with 4 PVC fixing rings, item 0002 754. Installation still follows the equipment instructions; an accessory recommendation is not a complete installation plan.[1][2]
Pre-use checklist
- Record the model, motion and actual stroke.
- Record the frame or tray and layer arrangement.
- Find the permissible load at the required speed under those conditions.
- Exclude prohibited combinations and confirm sample and equipment fixation.
If the documents do not explain whether the load includes particular accessories, ask the manufacturer rather than adding or subtracting masses yourself. Select an appropriate combination instead of pursuing every maximum simultaneously.
References
- [1] Edmund Bühler SM 30 — load / speed limits, PDF page(s) 1 (file page order). View reference resource
- [2] Edmund Bühler Beer Bottle Shaker SM 30 B control — load / speed limits, PDF page(s) 1 (file page order). View reference resource