Power Jacks E Series Mode d’emploi
MAINTENANCE MANUAL
E-Series
Machine Screw Jack
MM-SJ-EMS-EN-01b
Operation & Maintenance Instructions with Parts List
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Contents
E-SERIES
MACHINE SCREW JACKS
SPARES LIST & MANUAL
MM-SJEMS-EN-01b
1. Introduction .......................................................................................................................................................... 4
2. Product Code ........................................................................................................................................................ 8
3. Standard Performance......................................................................................................................................... 9
4. Installation.......................................................................................................................................................... 10
5. Operation ............................................................................................................................................................ 15
6. Maintenance ....................................................................................................................................................... 21
7. Recommended Lubricants................................................................................................................................. 26
8. Spare Parts......................................................................................................................................................... 27
9. Storage & Warehousing ..................................................................................................................................... 28
10. Disposal of Units ................................................................................................................................................ 29
11. Warranty ............................................................................................................................................................. 30
12. General Assembly & Parts List.......................................................................................................................... 31
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1
1.1 TranslatingCongurations
Introduction
Stop Nut
Secondary
Guide
Anti-Rotation
Key Adaptor*
Drive Shaft Gearbox
Motor Adaptor
Rod End
Clevis End
Top Plate
Bellows Boot
Rotary Limit
Switch Adaptor
Rotary Limit Switch
Brake
Hand Wheel
Protection Cap
Encoder
Fork End
Electric Motor with or without:
•Brake
•Encoder
•Forced Ventilation
Lead Screw Options:
1. Standard 1 x Pitch
2. 2 x Pitch
3. Anti-Rotation (Keyed)
4. Stainless Steel
5. Left Hand Thread
Coupling
Limit Switches
Trunnion Feet
Trunnion
1
2
3
4
5
* For use with Anti-Backlash and some safety nut models only.
Upright Inverted
Available as:
1. Standard
2. Anti-Backlah
3. Anti-Rotation (Keyed)
4. Safety Nut
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1
Introduction
1.2 RotatingCongurations
Drive Shaft
Gearbox
Motor Adaptor
Double Hub
Nut
Safety Nut
Safty Nut
Double Hub
Bellows Boot
Rotary Limit
Switch Adaptor
Rotary Limit Switch
Brake
Hand Wheel
Protection Cap
Encoder
Standard
Nut
Electric Motor with or without:
•Brake
•Encoder
•Forced Ventilation
Lead Screw Options:
1. Standard 1 x Pitch
2. 2 x Pitch
3. No Pilot End
4. Stainless Steel
5. Left Hand Thread
6. Larger Diameter Screw
Coupling
Trunnion Feet
Trunnion
1
2
3
4
5
6
Upright Inverted
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1Introduction
1.3 Introduction
E-Series screw jacks are exclusively designed for carrying out linear motion movements in accordance with the
specication detailed in Power Jacks product information and this maintenance manual.
Any other application other than specied or one going beyond the above mentioned capacity is unauthorised. The
manufacturer is not liable for damages resulting from such applications. The user alone has to bear the risk.
Since the screw jacks can be applied in various areas, the user is responsible for the specic application of use.
The E-Series machine screw jacks have been designed to comply with Machinery Directive 2006/42/EC and with
the relevant essential health and safety requirements as applies to the equipment itself. Where tted, Electric
Motors conform with Low Voltage Directive 2006/95/EC and EMC Directive 2004/108/EC.
1.4 Safety Instructions in The Operating Manual
This symbol indicates potential dangers to people.
Comply with the instructions in order to avoid injury.
This symbol indicates potential dangers to the unit.
Comply with the instructions in order to avoid damage to the unit.
This symbol indicates special information on:
• The best possible use of the unit
• How to facilitate operation of the unit
1.5 Residual Risk and Hazards
1.5.1 Should a risk of damage to material or injury to persons remain despite the structural safety of
the E-Series screw jack(s), the user must draw attention to such hazards by means of suitable
warning notices and written instructions indicating safety precautions.
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1.6 Operating Personnel
1.6.1 The E-Series screw jacks are designed according to state-of-the-art technology and are in line
with applicable safety regulations. However, the general risks of personal injury or damage to
property connected with the use of such machinery cannot be completely eliminated. Therefore
the units may only be assembled and operated by competent and qualied personnel and only
be used for the authorised application.
1.6.2 Therefore a careful study of this operating manual should be made before attempting to use or
service the unit and particular attention should be paid to the safety instructions.
1.6.3 Work to be performed on electrical parts, such as:
• Installation of limit switches
• Mounting of the drive
• Check of the direction of rotation
should only be carried out by qualied electricians.
1.6.4 The E-Series screw jacks and the installation should be inspected by the operating and
supervising personnel for externally visible damage and defects at least once every shift. Any
changes (including the operational conditions) which may affect the safety are to be reported
immediately.
Introduction 1
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Third Space Numerals (d)
The characters appearing in this space are to indicate
stroke in millimetres on all standard units, but not on
specials. This space on special
actuators helps to identify to our Engineering Depart-
ment the actual Screw Jack model produced. The
numerals do not indicate stroke or type of modication
performed on special orders.
Sufx (e)
B - Indicates bellows boot required to protect lift-
ing screw.
G - Secondary guide for the lifting screw.
L - Single-end worm shaft extension on left-hand
side only.
R - Single-end worm shaft extension on right-
hand side only.
1 - Gear ratio option-2 required.
X - Supplied without bottom pipe, but with guide
bushing.
Note 1. All sufxes (e) that do not conict with another
may be used in series against one Screw Jack.
Capacity and Series Designations (c)
Upright Translating Screw Jacks
E2625 E2501 E1802 E1805 E1810 E1820 E1830 E1850 E18100
5 10 25 50 100 200 300 500 1000
Inverted Translating Screw Jacks
Decrease the upright model number by 1, e.g. 1804, 50 kN inverted Screw Jack.
Rotating Screw Jacks
Increase the upright model number by 1, e.g. 1806, 50 kN rotating Screw Jack.
Anti-Backlash Screw Jacks
Replace the rst digit in the model number with a 4, e.g. 4805, 50 kN anti-backlash Screw Jack.
2.0 Example
KME1819-300-BR, 200 kN inverted keyed translating machine screw jack with top plate, 300 mm of stroke, bel-
lows boots tted to protect lifting screw and a single ended worm shaft extension on the right-hand side only.
K ME 1819 300 BR
↓↓↓↓↓
(a) (b) (c) (d) (e)
↓↓↓↓↓
Prex Basic Model Series No. Travel of Unit (mm) Sufx
Product Code
Prexes (a)
S - All Stainless Steel Screw Jack.
K - Keyed Lifting Screw
Basic Model (b)
TE - Threaded end on lifting screw (standard)
ME - Top Plate on end of lifting screw.
CE - Clevis End on lifting screw.
PE - Plain end, with no machining on end of lifting
screw.
DE - Inverted rotating screw jack.
UE - Upright rotating screw jack.
CCE - Screw Jack with double clevis mounting
arrangement.
Note
1. For E-Series Screw Jacks with plain ended lifting
screws consult Power Jacks.
2. For Stainless Steel Screw Jacks with varying mate-
rials and/or platings consult Power Jacks.
3. For external keyed guides consult Power Jacks.
2
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Model E2625 E2501 E1802 E1805 E1810 E1820 E1830 E1850 E18100
Capacity kN 5 10 25 50 100 200 300 500 1000
Lifting ScrewNOTE 1mm 16 x 3 20 x 5 30 x 6 40 x 9 55 x 12 65 x 12 95 x 16 120 x 16 160 x 20
Gear ratios
Option 1 5:1 5:1 6:1 6:1 8:1 8:1 102/3:1 102/3:1 12:1
Option 2 20:1 20:1 24:1 24:1 24:1 24:1 32:1 32:1 36:1
Turn of worm for travel
of lifting screw
Option 1 5 for 3mm 1 for 1mm 1 for 1mm 1 for
1.5mm 1 for 1.5mm 1 for 1.5mm 1 for 1.5mm 1 for 1.5mm 3 for 5mm
Option 2 20 for
3mm 4 for 1mm 4 for 1mm 4 for
1.5mm 2 for 1mm 2 for 1mm 2 for 1mm 2 for 1mm 9 for 5mm
Max. Input power (kW) Option 1 0.25 0.375 1.5 3 3.75 3.75 6 11.25 18.5
Option 2 0.12 0.19 0.375 0.55 1.125 1.125 1.9 4.5 8.25
Start up torque at full
load (Nm)NOTE 2
Option 1 2.5 6.8 19.8 56 115.9 263.8 480 904 2025
Option 2 1.1 3 8.7 25.5 60.5 137 284 504 1119
Weight (kg) - stroke = 150mm 1.03 2.27 8.17 15.88 24.72 45 86 195 553
Weight (kg) per extra 25mm 0.073 0.13 0.21 0.32 0.57 0.86 1.58 2.49 4.31
Option 1
Gear Ratio 5 5 6 6 8 8 10 2/3 10 2/3 12
Screw Jack Static
Efciency 0.189 0.233 0.201 0.213 0.206 0.181 0.149 0.132 0.131
Screw Jack
Dynamic Efciency 0.252 0.306 0.264 0.281 0.272 0.242 0.205 0.181 0.178
Option 2
Gear Ratio 20 20 24 24 24 24 32 32 36
Screw Jack Static
Efciency 0.107 0.130 0.115 0.117 0.132 0.116 0.084 0.079 0.079
Screw Jack
Dynamic Efciency 0.160 0.194 0.167 0.172 0.190 0.169 0.128 0.120 0.123
Notes:
1. All metric machine screws have a trapezoidal thread form.
2. For loads of 25% to 100% of screw jack capacity, torque requirements are approximately proportional to the load.
3. Efciency values for standard grease lubricated worm gear box and lifting screw.
4. All E-Series screw jacks have grease lubricated gearbox and lead screw as standard.
5. For performance data for Anti-Backlash, Anti-Rotation (keyed) and other variants please consult corresponding catalogue.
Standard Performance 3
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4.1 General Installation Notes
4.1.1 Before installing new parts, remove any rust preventative, protection grease etc.
4.1.2 Check before immediate installation for possible transit damage.
4.1.3 Components which have been stored for a long time (over 1 year) should be re-lubricated in
working conditions before they are put into operation.
4.1.4 Before putting the E-Series screw jack(s) into service, the User must ensure that the plant in
which it is installed complies with all applicable directives, especially those regarding health
and safety at work.
4.1.5 Handle the screw jack with care. The E-Series screw jacks should be handled with care to avoid
damaging the machined drive shafts and the threads of the lead screw.
4.1.6 Before putting the units into service, check the lubricant level. If necessary top up the lubricant
to the required level.
4.1.7 Do not mix greases of different nature or specications.
4.1.8 If the same type of grease already in use is not available, remove all of the existing lubricant
completely and ush its interior thoroughly with a light solvent before relling with a new
lubricant.
4.1.9 The structure on which the E-Series screw jack(s) are mounted must have ample strength to
carry the maximum load, and should be rigid enough to prevent undue deection or distortion of
the screw jack supporting members.
4.1.10 It is essential that the E-Series screw jack(s) be carefully aligned during installation so that
the lead screw is running true and the connecting shafts are exactly in line with the input drive
shafts.
4.1.11 When installing several screw jacks to move a common load/item/structure, the jacks should
rst be connected to the structure (refer 4.4). The load should be equally distributed between
the screw jacks. The screw jack input drive shafts should then be connected taking care not to
turn the input shaft and lose the screw jack position relative to the structure.
4.1.12 After the E-Series screw jack(s) is installed, shafting, gearboxes, motors, etc., are coupled
together it should be possible to turn the main drive by hand (no load on screw jacks). If there
are no signs of binding or misalignment, the screw jack system is then ready for normal
operation.
4.1.13 After the E-Series screw jack(s) are installed, they should be operated through their full travel
four or ve times under minimum load conditions. If the arrangement operates satisfactorily
and there are no signs of binding or misalignment the E-Series screw jack(s) are ready for
normal operation. Refer to section 5 for typical operating performance checks.
Installation4
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