SKF LAHD 500 Bedienungsanleitung

SKF LAHD 500-1000

Instructions for use

Mode d’emploi

Bedienungsanleitung

Instrucciones de uso

Manuale d’istruzioni

Instruções de uso

使用说明书

Инструкция по эксплуатации

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3SKF LAHD 500-1000

1. Application .......................................................................................................4

2. Description.......................................................................................................4

3. Technical data ..................................................................................................5

4. Instructions for use ..........................................................................................6

4.1 Installation ...................................................................................................................... 6

5. Maintenance and trouble shooting....................................................................8

5.1 Maintenance................................................................................................................... 8

5.2 Trouble shooting............................................................................................................ 8

Table of contents

Original instructions

English

4 SKF LAHD 500-1000

1. Application

The SKF Oil levellers, type LAHD, are designed for automatic adjustment of the optimal

oil lubrication level within a bearing housing, gearbox, crankcase or similar oil bath

application. It effectively solves the problem of adjusting the correct oil level during running

conditions rather than during standstill.

Furthermore, it will automatically compensate for oil leakage and offers the possibility for

visual inspection of the oil level. The oil leveller will not compensate if the oil level is too

high.

2. Description

The oil leveller basically consists of two communicating oil reservoirs, one on top of the

other. The lower reservoir is in direct contact with the application and hence its oil level

is the same as the oil level inside the application. Through a ventilation system the lower

reservoir is in direct contact with the ambient air.

The upper reservoir is an airtight container storing replacement oil.

Through its extended neck, which dips into the oil of the lower reservoir, the two reservoirs

are in direct connection with each other. However oil can only ﬂow from the upper to

the lower reservoir once the oil level in the lower reservoir goes below the preset level,

allowing air to ﬂow through the extended neck to the upper reservoir.

Oil inlet

Upper cover

Upper reservoir

Spring loaded valve

Set of gaskets

Extended neck

Lower reservoir Oil level

Fixation nut

Magnetic, drainage plug

Assembly drawing oil leveller

5SKF LAHD 500-1000

3. Technical data

Boundary dimensions

- LAHD 500 Ø 91 mm x 290 mm high (3,6 x 11,4 in)

- LAHD 1000 Ø 122 mm x 290 mm high (4,8 x 11,4 in)

Reservoir volume

- LAHD 500 500 ml (17 ﬂ. oz. US)

- LAHD 1000 1 000 ml (34 ﬂ. oz. US)

Container material Polycarbonate, aluminium

Temperature range permitted - 20 .. 70 °C (-5 .. 160 °F)

Permissible humidity 0 - 100 %

Length of connecting tube 600 mm (2 feet)

Connection thread G 1/2

Tube material Polyurethane

O-ring material NBR - 70 Shore

Gaskets NBR - 80 Shore

6 pieces, 3 pcs 3 x 64,5 x 82,5 mm

2 pcs 2 x 64,5 x 82,5 mm

1 pcs 2 x 62,5 x 82,5 mm

Other material Aluminium, Bronze, Stainless Steel

Suitable oil types Mineral and synthetic oils

English

6 SKF LAHD 500-1000

4. Instructions for use

4.1 Installation

1. Determine the required oil level in the application during operation.

For oil lubricated bearing housings this is normally deﬁned as two millimetres

(0,08 in) above the inner diameter of the outer ring of the bearing. It is however,

strongly advised to check the recommendations from the bearing manufacturer.

Similar recommendations exist for gearboxes and crank shaft casings.

2. Determine the best location for the installation of the support bracket assembly.

The oil leveller must not be more than 60 cm (2 feet, length of plastic tube) from the

application.

3. Adjust the support bracket, which holds the oil leveller to approximately 50 mm

(2 in) below the required oil level.

4. Separate the lower and the upper reservoirs from each other.

5. Connect the lower reservoir to the support bracket by means of the ﬁxation nut at the

bottom of the oil leveller.

6. Adjust the height of the oil leveller so that the required oil level is between the two

lines marked on the lower reservoir.

7. Measure and cut the plastic tube to the adequate length.

8. Prepare both ends of the tube with the swivel connectors. Start by sliding the swivel

adapter (with the thread facing outwards) on top of the tube. Insert the copper sleeve

into the tube and slide the copper ring on top of the sleeve.

Bracket assembly Bracket dimensions

Tube & coupling assembly

9. Thread the two connection couplings (G 1/2) onto the oil leveller and the application

and connect the tube. Firmly tighten the swivel adapters.

10. Ensure there are no bends or kinks in the tube preventing the oil to ﬂow freely from

the oil leveller to the application.

7SKF LAHD 500-1000

oil

level

oil

oil oil

level

Installation

11. Adjust the oil level in the application to the required level and assure that this

corresponds to a level between the two lines marked on the lower reservoir.

If necessary, adjust the height of the lower reservoir by means of the support bracket

screw.

12. Screw the upper reservoir tightly onto the lower reservoir ensuring that the extended

neck is ﬂush with the oil level in the lower reservoir. Use the six rubber gaskets to

obtain the correct height. (Ensure the gasket with the smallest bore remains on top).

13. For high precision applications use the support bracket screw for the ﬁne tuning

(otherwise the accuracy will depend on the thickness of the gaskets).

14. Unscrew the cover of the upper reservoir and ﬁll it with the same oil as used in the

application.

15. Screw back the cover tightly, ensuring that no air can enter into the upper reservoir.

This will also open the valve at the bottom of the upper reservoir and hence connect

the upper and lower reservoir to each other.

16. Start the machine. As the oil in the application will lower due to splashing, oil will ﬂow

from the lower reservoir into the application, exposing the extended neck to open air.

This will allow air to enter the upper reservoir and hence oil to ﬂow down to the lower

reservoir. Once the oil has reached the preset level, air can no longer pass to the

upper reservoir, effectively stopping the ﬂow of oil.

N.B.: During stand-still the oil will stop splashing and the level in the application will rise.

As a consequence the oil level in the oil leveller will also rise above the preset level.

English

8 SKF LAHD 500-1000

5. Maintenance and trouble shooting

5.1 Maintenance

Regularly:

• Check and reﬁll the upper oil reservoir with new, clean oil.

• Clean the oil leveller. For this purpose the lower reservoir is equipped with a drainage

neck with a magnetic plug.

5.2 Trouble shooting

In case of different oil levels in the application and the oil leveller check that:

• The application is provided with a ventilation nipple preventing over/under pressure.

In the case the oil continues to ﬂow from the upper reservoir despite the pre-set level

having been reached:

• Ensure the cover and the oil inlet on the upper reservoir is properly sealed.

In the case of excessive oil consumption check the application for leakage.

Andere Handbücher für LAHD 500

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