Power-jacks C-Series Bedienungsanleitung PDF herunterladen (Seite 3)

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C-Series Machine Screw Jack

be treated as an emergency device only and must not be allowed to come into contact with the worm gears

during normal working cycles otherwise serious damage will result to worm gears and bearings.

1.18 The maximum worm shaft speed for these screw jacks should not exceed 500 R.P.M. for heavy loads. Refer

to Power Jacks Limited for higher worm shaft speeds for lighter loads. the input power should not exceed

the power rating shown in the catalogues screw jack performance tables.

1.19 The lead screws should not be permitted to accumulate dust and grit on the threads. If possible, lead screws

should be returned to the closed position (retracted) when not in use.

1.20 If equipped with bellows boot the boot must not be compressed bellow its minimum height (consult Power

Jacks product literature or engineers).

2-Lubrication Of The Screw Jack

2.1 Thescrewjacksareshippedpackedwithgrease(unlessotherwisecalledfor)whichshouldbesufcientfor

one month of normal operation.

2.2 IMPORTANT NOTE – Lubricant suitability is dependent on duty cycle and ambient temperature. However in

general recommended lubricants are suitable for operation in an ambient temperature of -10ºC to +50ºC. If

in doubt consult with Power Jacks prior to installation and operation.

2.3 The maintenance engineer should establish a lubrication programme based on the screw jack’s duty and

use.

2.4 TheleadscrewrequiresalightgreaselmtobeappliedatInstallation.Theleadscrewshouldnotbeover

greased.

2.5 Note excessive grease should be avoided.

2.6 Itisrecommendedthatthescrewjackbettedwithbellowsorcoverstoprotecttheexposedscrewfrom

contamination from dirt and debris.

2.7 Ifthescrewjackoritssystemisttedwithabrakeensurethatundernocircumstanceslubricantgetsinto

the brake as this can cause brake failure due to loss of friction.

3-Recommended Lubricants

Manufacturer Lubricant

Castrol Spheerol EPL2

Esso Beacon EP2

Gulf Gulfcrown EP2

Mobiloil Mobilux EP2

Power Petroleum BP Energrease LC2

Regent Texaco EP2

Shell Gadus S2V220AC2 (Alvania WR2)

Table 1 - Normal Operation

Manufacturer Lubricant

Castrol Spheerol LMM2

Esso Beacon EP2 Moly

Mobiloil Mobilgrease XHP222 Special

Power Petroleum BP Energrease L2 1M

Regent Molytex 2

Shell

Shell Greases 5826

(Overseas)

Shell Alvania HDX2

Table 2 - Arduous Operation

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