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Are Screw Jacks Self-Locking?

April 26, 2017Jacks screw self-locking

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Are Screw Jacks Self-Locking?

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Screw Jacks with 24:1 and 25:1 gear ratios are considered self-locking in most cases. The following screw jack models are considered not to be self-locking: All Metric and Imperial ball screw jacks. • All Metric and Imperial ball screw jacks • The M2555 (1/4 ton) screw jacks with 5:1 gear ratio • The E2625 (5kN) & M2625 (1/2 ton) screw jacks with 5:1 gear ratio • The E2501 (5kN) & M2501 (1-ton) screw jacks with 5:1 gear ratio • In some cases the E1802 (25kN), M1802 & M9002 (2 ton) screw jacks with 6:1 gear ratio. For advice on an application basis consult Power Jacks Ltd • In some cases the E1805 (50kN) & M1805 (5 ton) screw jacks with 6:1 gear ratio. For advice on an application basis consult Power Jacks Ltd • In some cases the E1810 (100kN) & M1810 (10 ton) screw jacks with 8:1 gear ratio. For advice on an application basis consult Power Jacks Ltd • In some cases the M1815 (15 ton) screw jacks with 8:1 gear ratio. For advice on an application basis consult Power Jacks Ltd All screw j