Assembly instructions

AN 4228 EN 03.07

for ARPEX® - plate packswith fitting screw connection

Series ARPSize 64-4 to 345-6

incl. design according to Directive 94/9/EC

A. Friedr. Flender AG ⋅ 46393 Bocholt ⋅ Tel. 02871/92-0 ⋅ Telefax 02871/92-2596 ⋅ www.flender.com

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AN 4228 EN 03.07

1. General

These assembly instructions are only valid for series and sizes mentioned on the cover sheet and onlycombined with the generic operating instructions BA 8704 EN.

All notes and data given in these assembly instructions and in the genericoperating instructions BA 8704 EN must be strictly observed!

Failure to observe these instructions may result in breakage of the coupling.Flying metal fragments can cause serious personal injuries!

A damaged coupling becomes an explosion hazard. Operation of the couplingwith damaged coupling components in hazardous areas in conformity withDirective 94/9/EC is inadmissible.

2. Safety notes

All Safety notes and data according intended use, the fundamental duties and the protectingguards are to be taken from the operating instructions BA 8704 EN!

2.1 Warnings and symbols used in these instructions

This symbol indicates safety measures which must be observed to avoid personalinjury.

This symbol indicates safety measures which must be observed to avoid damage tothe coupling.

This symbol indicates to safety measures, which must be observed especially for usein hazardous areas according to Directive 94/9/EC (see section 3.1) to avoidpersonal injuries and property damage.

3. Condition on delivery

The ARPEX coupling components which are delivered with these instructions are coated with corrosionpreventative (Tectyl).

The plate packs are factory assembled and should not be disassembled.

The plate packs are provided with transit protections (can also be used as assembly aids; see detail X – figure I and figure II).

All other coupling components are tightened hand tight together with the pre-assembled couplingcombinations (see figure I and figure II ”Fixing bolts”).

Caution!

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AN 4228 EN 03.07

Figure I Figure II

M CJC

XXFixing bolt (1) Fixing bolt (2)

Detail XTransit protection / Assembly aid

Clamping bolt

3.1 Marking of the coupling parts according to Directive 94/9/EC

Couplings which are assigned for use in hazardous areas according to Directive 94/9/EC must showappropriate marks.

The detailed marks and further data according to the operating conditions of these couplings are tobe taken from the operating instructions BA 8704 EN.The Declaration of Conformity of the manufacturer is also printed in these instructions.

4. Assembly

4.1 Assembly preparations

Remove the fixing bolts (see figure I resp. figure II) from the coupling components.

Push the unbolted coupling component (hub or sleeve) out of the recess (perhaps using a jacking screw(e. g. DIN EN 24017, 8.8 – not included in the scope of supply). Place the screws into the threaded holesprovided for the purpose and rotate them several times until the coupling component is loose).

4.2 General information on assembly

Informations regarding the cleaning of the coupling components and shaft ends and the mounting of thehub components and the intermediate units (see section 4.3) are to be taken from the operating instructionsBA 8704 EN.

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AN 4228 EN 03.07

4.3 Mounting of the intermediate unit

Insert the sleeve or sleeve combination between the hub components. Tighten the fixing bolts onlylightly. Loosen the clamping bolts of the transit protection (see fig. I and II – detail X) simultaneously.

Remove the transit protection (fig. I and II, detail X) and tighten the fixing bolts in several turns usingthe specified tightening torque (table 1).

ARPEX M-hub / C-flange (figure I) J-hub / C-flange (figure II)

Hexagon socket head screw - 8.8 Hexagon head screw - 8.8

Size Thread(slightlyoiled)

Quantity Tighteningtorque

TA

Thread(slightlyoiled)

Quantity Tighteningtorque

TA

piece [Nm] piece [Nm]

64-496-6

–M 6

–12

–9

M 6M 6

812

99

120-6142-6

M 6M 8

1212

920

M 6M 8

1212

920

162-6190-6

M10M12

1212

4170

M10M12

1212

4170

214-6230-6

M12M12

1212

7070

M12M12

1212

7070

245-6275-6

M16M16

1212

170170

M16M16

1212

170170

310-6345-6

M16M20

1212

170330

M16M20

1212

170330

Table 1:Assembly data of the fixing bolts

The specified tightening torques (table 1) must be absolutely kept. Deviatingtightening torques may result in accelerated wear of the plates and damage ofthe coupling.Failure to observe these instructions may result in breakage of the coupling.Flying metal fragments can cause serious personal injuries!

A damaged coupling becomes an explosion hazard. Operation of the couplingwith damaged coupling components in hazardous areas in conformity withDirective 94/9/EC is inadmissible.

5. Alignment

ARPEX couplings will compensate for misalignment conditions of shafts to be connected.

Couplings with two plate packs permit end float, parallel offset and angular misalignment.Couplings with one plate pack only permit end float and angular misalignment.

When aligning the machines to be coupled, the gap ”S1” (see figure III and table 2) is measured inseveral positions around the circumference with a slide caliper rule. When the measured flange gapsare within the listed S1min / S1max (table 2) values, the machine elements are sufficiently well aligned.

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AN 4228 EN 03.07

S1max S1min

S1maxS1min

Figure III

S1 = Gap between coupling flanges

S1min = see table 2

S1max = see table 2

M = Measuring point

The assembly misalignment may not exceed the specified values for S1min andS1max (table 2). Nevertheless it is advisable to align the couplings as precise aspossible to have misalignment reserves for operation.

Unpermissible assembly misalignments may result in accelerated wear of theplates and damage to the coupling.Failure to observe these instructions may result in breakage of the coupling.Flying metal fragments can cause serious personal injuries!

A damaged coupling becomes an explosion hazard. Operation of the couplingwith damaged coupling components in hazardous areas in conformity withDirective 94/9/EC is inadmissible.

ARPEX S1 S1 S1

min. max.

Size mm mm mm

64-4 6.0 5.8 6.2

96-6 6.0 5.8 6.2

120-6 7.0 6.8 7.2

142-6 9.0 8.7 9.3

162-6 11.0 10.7 11.3

190-6 10.0 9.6 10.4

214-6 10.0 9.6 10.4

230-6 12.0 11.5 12.5

245-6 16.0 15.5 16.5

275-6 20.0 19.4 20.6

310-6 22.0 21.3 22.7

345-6 24.0 23.3 24.7

Table 2: Permissible assembly misalignment

Caution!

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AN 4228 EN 03.07

6. Putting into service / Operation

Notes and data concerning ’putting into service’ and ’operation’ are to be taken of the operatinginstructions BA 8704 EN!

7. Failures, causes and remedies

Detailed informations and notes regarding the subject ’failures’ as well as the ’causes’ and ’remedies’of it are to be taken of the operating instructions BA 8704 EN.

8. Maintenance

Notes and data concerning ’maintenance’ are to be taken of the operating instructions BA 8704 EN!

Additionally a complete list with addresses of FLENDER service centres is attached to these operatinginstructions.

9. Disassembly

Reinsert the clamping bolts of the transit protection as assembly aids (see figure I and II – detail X). Besure that the assembly aids are inserted loosely but not yet tightened.

Turn out the fixing bolts of the coupling components (see figure I and II).

Then place jacking screws into the threaded holes provided in the coupling components to be removedand force out the recess of the intermediate unit (CEC).

Using the clamping bolts of the transit protection (see figure I and II – detail X) tighten the plate packsuntil they are in contact and lift out the sleeve (CEC-components).

Secure coupling components to be loosened before starting with disassemblywork! Danger of injury due to drop down of coupling components.

10. Replacing plate packs

If plate packs must be changed it is recommended to send the half coupling concerned to Flenderfactory for repair and rebalancing.

If this is impossible and if the plate packs are to be changed by the customer, the following tighteningvalues and methods must be observed to ensure full functioning and performance capability of thecoupling:

10.1 Assembly of plate packs acc. tightening torque method(Sizes 64-4 to 230-6)

Fitting bolt (4) Nut (1)Ring (3)ARPEX-flange (2) Catching ring (5)

Figure IV

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AN 4228 EN 03.07

Bolt the plate pack alternately together with the coupling components so that the rings (item 3, figureIV) contact the ARPEX flange (item 2) and the nuts (item 1) contact the catching rings (item 5).

The bolts must be used in the as-delivered condition. Additional lubrication orgreasing is not allowed!

The tightening torque for the bolts must be applied to the nuts (item 1) and the bolt head be securedagainst turning. This protection against turning must be supported on the flange to which the plate packis fastened. Tighten the nuts consecutively using specified tightening torque TA (table 3).

To avoid a stretching of the plate pack it is recommended to tighten the nuts in two runs (in the 1. runwith 0.5 x TA and in the 2. run with TA; see table 3).

Width Tightening torque

ARPEX Thread across flatsA/F

1. run:0.5 x TA

2. run:TA

Size [mm] [mm] [Nm] [Nm]

64-4 M 6 10 6 12

96-6 M 6 10 6 12

120-6 M 8 13 15 30

142-6 M 10 17 30 60

162-6 M 12 19 50 100

190-6 M 14 21 80 160

214-6 M 16 24 125 250

230-6 M 18 27 175 350

Table 3: Assembly data for plate pack bolting(Tightening torque method)

The specified tightening torques (table 3) must be absolutely kept. Deviatingtightening torques may result in accelerated wear of the plates and damage ofthe coupling.Failure to observe these instructions may result in breakage of the coupling.Flying metal fragments can cause serious personal injuries!

A damaged coupling becomes an explosion hazard. Operation of the couplingwith damaged coupling components in hazardous areas in conformity withDirective 94/9/EC is inadmissible.

10.2 Assembly of plate packs acc. rotation angle method(Sizes 245-6 to 345-6)

Apply lubricant (ATEC special paste) to the contact faces of the nut and the bolt head and the threadof the fitting bolt.

Bolt the plate pack alternately together with the coupling components so that the rings (item 3, figureIV) contact the ARPEX flange (item 2) and the nuts (item 1) contact the catching rings (item 5).

The tightening torque for the bolts must be applied to the nuts (item 1) and the bolt head (item 4) besecured against turning. This protection against turning must be supported on the flange to which theplate pack is fastened. It is recommended to tighten the nuts as follows:

Tighten the nuts consecutively using initial tension T0 (table 4).

Mark a clearly visible zero position at any point on the collar of the nut as well as on the flange (e. g.punch mark – see figure V). It is recommended to choose a corner of the hexagon as zero position.

Caution!

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AN 4228 EN 03.07

Wrench socket

Zero position1. Angle mark (= α/2)

2. Angle mark (= α)

Mark zero position onflange (e.g. by punch mark)

•

TA

210

Figure V Figure VI: Arc angle on thecollar of the nut

Starting from the zero position mark the turning angle (table 4) /2 and resp. /2 and (arc angle– see figure VI) in a counter-clockwise direction on the collar of the nut (!).

Alternatively, the turning angle [deg] can also be transferred to the wrench socket (see figure V), toavoid marking every single nut as described above.

Do not in any case mark the turning angle as arc angle as specified in table 4 (see also figureVI) – these values relate exclusively to the collar of the nut!

Turn the nuts consecutively, starting from the zero position (marked on the flange) to the first angle mark/2 (on the wrench socket or the collar of the nut) in the tightening direction.

Then turn the nuts up to the second angle mark in a second tightening operation.

ARPEX Thread Widthacross

Rotation angle methodacross

flats Rotation angle Arc angle

A/F T0 /2 collar-∅ /2

Size [mm] [mm] [Nm] [deg] [deg] [mm] [mm] [mm]

245-6 M 20 30 50 50° 25° 36 16 8

275-6 M 22 32 70 55° 27.5° 40 19 10

310-6 M 24 36 90 50° 25° 45 20 10

345-6 M 27 41 120 55° 27.5° 50 24 12

Table 4: Assembly data for plate pack bolting (Rotation angle method)

The specified initial tensions and rotation angles (table 4) must be absolutelykept. Deviating initial tensions and rotation angles may result in acceleratedwear of the plates and damage of the coupling.Failure to observe these instructions may result in breakage of the coupling.Flying metal fragments can cause serious personal injuries!

A damaged coupling becomes an explosion hazard. Operation of the couplingwith damaged coupling components in hazardous areas in conformity withDirective 94/9/EC is inadmissible.

2

1

0

/2

/2