10 µm PET and electronic film
The reason this shaft exists: it works from 0.1 kg/cm², where a DS shaft needs 0.8 kg/cm² to start at all.
Low Starting Tension Slip Shaft
Low Tension Differential Friction Shaft
Low tension slip shafts are designed for sensitive materials that require stable winding at low air pressure and low starting torque. Also known as: low tension slip shaft, low tension friction shaft.
Low-Tension Winding Function
Controlled winding torque for sensitive slit rolls.
Suitable for stretch-sensitive films, thin PET film, electronic film and lithium battery-related separator film applications where low starting tension is required.
- Center-air-pressure slip shaft structure designed for low starting tension.
- Suitable for stretch-sensitive film slitting and lithium battery film slitting.
- Works from 0.1 kg/cm² air pressure, against the 0.8 kg/cm² a DS shaft needs to start. That eight times difference is the reason to choose this shaft: it is what makes 10 µm PET and separator film windable at all.
| Core Size | 3-inch standard core, 76.2 +/- 0.2 mm |
|---|---|
| Ring OD | 75.5 mm body OD, up to 77.8 mm expansion point |
| Standard Widths | 10, 15, 20, 25, 30, 35 mm |
| Standard ID | 50 mm |
| Working Pressure | From 0.1 kg/cm² (0.1 bar / 1.4 psi) — eight times lower than a DS shaft |
Where a low tension differential friction shaft is used
Lithium separator film
Stretch-sensitive separator where any excess winding tension deforms the material.
Stretch-sensitive material generally
Any web where the roll must be wound at the lightest tension the machine can hold.
Narrow ring widths
Standard widths 10–35 mm on 3-inch cores, 50 mm inner diameter.
Slip Ring
Slip ring options and core-contact details
Low-tension slip rings can be selected according to core size, ring width, starting pressure, material sensitivity and winding tension requirement.
- The ring is built from roller positioning balls and bearings.
- 3-inch ring outside diameter is 75.5 mm, expanding to 77.8 mm at the highest point.
- Suitable core inner diameter is 76.2 +/- 0.2 mm for rubber, aluminum or paper cores.
- Standard widths include 10, 15, 20, 25, 30 and 35 mm; other widths can be designed to order.
- Standard inner diameter is 50 mm.
Selection Notes
Confirm core material, core inner diameter, required width, winding tension range, shaft structure and whether the application needs low starting tension or higher roll-holding force.
Technical Reference Data
Pull force reference values for preliminary selection.
Reference values should be confirmed according to the actual shaft structure, ring width, groove material and air path before final selection.
Low Tension Slip Ring Pull Force, Rings 1-10
Pressures are given in kg/cm² as published by the manufacturer. For conversion: 1 kg/cm² = 0.98 bar = 14.2 psi. So 1 kg/cm² ≈ 1 bar, and 5 kg/cm² ≈ 4.9 bar ≈ 71 psi.
How to use these figures: they are reference values for a single ring, measured under the stated test conditions — that ring width, that friction material and that groove. Total winding torque on your machine depends on how many rings are on the shaft, the roll diameter as it builds, the condition of the friction material and the line speed, so these numbers cannot be used directly to calculate web tension. Send us the slit widths, the number of rolls across and the tension range you need, and we will confirm the ring configuration before you size anything.
Test condition: 3-inch roller-type slip ring, 35 mm width, 54.7 mm inner diameter, 10 x 3 groove with wool felt, at 3.0 kg air pressure.
| Slip Ring No. | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
|---|---|---|---|---|---|---|---|---|---|---|
| Pull Force | 0.35 | 0.34 | 0.35 | 0.30 | 0.32 | 0.36 | 0.36 | 0.30 | 0.35 | 0.31 |
Low Tension Slip Ring Pull Force, Rings 11-19
Continuation of the same test condition.
| Slip Ring No. | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 |
|---|---|---|---|---|---|---|---|---|---|
| Pull Force | 0.30 | 0.32 | 0.33 | 0.30 | 0.33 | 0.36 | 0.32 | 0.33 | 0.35 |
Related Slip Shaft Types
Air Slip Shaft
Air slip shafts combine pneumatic core locking with controlled differential slip for accurate torque and stable multi-roll winding.
View DetailsDS Slip Shaft
DS slip shafts provide pneumatic locking and controlled slip for medium-tension film slitting and rewinding applications.
View DetailsBall Slip Shaft
Ball slip shafts can be configured as center-air, pneumatic side-pressure or mechanical side-pressure structures for flexible narrow-roll winding.
View DetailsDouble Ball and Roller Slip Shaft
Double ball and roller slip shafts use extended expansion contact points to support stable core holding and winding torque.
View DetailsKey Slip Shaft
Key slip shafts use rectangular metal or rubber keys to expand and contact the core for controlled differential winding.
View Details