Roving / Speed Frame Bottom Roller (Simplex)
Bottom rollers for the roving or simplex drafting stage, also called a speed frame. Select the roller position and machine configuration together.

Application
Roving-frame bottom rollers form part of the drafting arrangement that prepares the fibre strand before winding it onto the roving bobbin. Speed frame and simplex are alternative names used for this machine stage. A ring-frame bottom roller is a separate selection because the drafting layout and roller geometry can differ.
Reference specifications
| Parameter | Details |
|---|---|
| Machine process | Roving frame / speed frame / simplex |
| Drafting arrangement | State the installed arrangement and number of roller positions |
| Roller position | Identify the front, middle or back section |
| Working zones | Provide working lengths, profile and pitch for each zone |
| Support arrangement | Provide bearing seats, journal spacing and shoulders |
| Coupling ends | Provide thread / fit details and the original reference |
Order details
- List the quantity per position when ordering a frame set.
- Keep roving-frame and ring-frame drawings under separate references.
- Include the machine model, roller drawing and photographs of both ends.
Simplex Frame Bottom Roller Selection
Use the installed drafting arrangement to identify the required roller. Record the roller position, the number and spacing of working zones, the support seats and the coupling ends. Where several speed frames are installed, separate the model and quantity for each frame instead of assuming one roller set covers all of them. State whether the enquiry is for a complete roller section or only a related support component.
Machine Makes & Model References
Use these machine-family references to identify your enquiry. Include the installed roller drawing and position for selection.
| Machine Make / Type | Model References |
|---|---|
| Roving / simplex frames | LMW LF 1400, LF 1465, LF 1660, LF 4200; Rieter F10, F11, F15, F30, F35, F40; Zinser 660, 668, 670; Toyoda FL |
Related roller information
Simplex Frame Bottom Roller — Frequently Asked Questions
Are roving frame, speed frame and simplex rollers listed together?
Yes. This page groups bottom roller enquiries for the roving or simplex stage, also called a speed frame. The exact frame and drafting arrangement identify the required configuration.
What should I send for a simplex bottom roller quotation?
Send the frame make and model, drafting arrangement, roller position, working dimensions, support seats, coupling details and quantity.
Can a simplex roller be selected from a ring-frame roller drawing?
Use the drawing for the installed simplex roller. Ring-frame and roving-frame drafting arrangements can require different profiles and dimensions.
How should a full-frame roller set be listed?
List each roller position or original part reference with its own drawing and quantity. Identify any different frame models separately.