More flexibility in format adjustments

Reverse lead screws from the dryspin lead screw technology

A lead screw is a machine element that converts a rotary motion into a translatory motion (motion thread). Steep thread and trapezoidal threaded spindles from igus® are available in various spindle materials (steel or stainless steel) and can be combined with more than seven different threaded nut materials. C15 steel and AISI 304 stainless steel are the standard materials used.

In addition to the standard right-hand (RH) and left-hand (LH) thread directions, reverse spindles with right-hand and left-hand threads offer the designer further scope for design, as no second spindle adjustment including a second drive is required.

Cost-effective
High usable overall length
Available ready for installation
Higher permissible torques than with a 2-part variant

Transmittable torques and max. Tensile loads for pinned and reverse threaded spindles:

The standard lead deviation for our drylin® trapezoidal or metric threaded spindles is 0.1 mm over 300 mm. The straightness is 0.3 mm over 300 mm without direction, whereas values of 0.1 mm or less over 300 mm are possible with a directional spindle. The spindles are manufactured in accordance with DIN 103 and tolerance class 7e.

The dryspin® reverse threaded spindles are available as rolled and then pinned stainless steel versions. Pinning guarantees a constant thread transition area or unusable thread length. This is 24 mm for all versions, regardless of the outer diameter.

Part number	max. transmissible torque [Nm]	max. tensile strain [N]
DST-LS-10x12-R/L-1000-ES	2	450
DST-LS-10x25-R/L-1000-ES	2	450
DST-LS-10x50-R/L-1000-ES	2	450
DST-LS-14x25-R/L-1000-ES	4	1,000
DST-LS-18x24-R/L-1000-ES	7.5	1,600
DST-LS-18x40-R/L-1000-ES	7.5	1,600
DST-LS-18x80-R/L-1000-ES	7.5	1,600
DST-LS-18x100-R/L-1000-ES	7.5	1,600

Transition areas:

The various manufacturing processes mean that the entire length except for a few millimetres at the centre of the lead screw can be used as stroke. The following table lists the different transition areas or unusable thread lengths.

Part number	L4
PTGSG-10x2-01-R/L-1000-…	20mm
PTGSG-12x3-01-R/L-1000-…	45mm
PTGSG-14x4-01-R/L-1000-…	60mm
PTGSG-16x4-01-R/L-1000-…	60mm
PTGSG-18x4-01-R/L-1000-…	80mm
PTGSG-20x4-01-R/L-1000-…	80mm
PTGSG-24x5-01-R/L-1000-…	90mm
DST-LS-10x12-R/L-1000-ES	24mm
DST-LS-10x25-R/L-1000-ES	24mm
DST-LS-10x50-R/L-1000-ES	24mm
DST-LS-14x25-R/L-1000-ES	24mm
DST-LS-18x24-R/L-1000-ES	24mm
DST-LS-18x40-R/L-1000-ES	24mm
DST-LS-18x80-R/L-1000-ES	24mm
DST-LS-18x100-R/L-1000-ES	24mm

Opposed lead screw thread joined using dowelling:

Go to the configurator

dryspin lead screws:

Go to the configurator

Calculate service life quickly and easily online

With the configurator ,you can quickly find the right threaded spindle and customise the studs on both sides. The application generates a dimensioned drawing of your configuration directly for you. Finally, you can order the spindle or request further information.