SUPER-SCREW What is it?

SUPER-SCREW® What is it ? Super-Screw® : splice and patch The Super-Screw® significantly reduces downtime. It can bear service tensions up to 200 N/m...
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SUPER-SCREW® What is it ? Super-Screw® : splice and patch The Super-Screw® significantly reduces downtime. It can bear service tensions up to 200 N/mm (belt breaking strength up to 2 000 N/mm). It is available in different qualities of rubber (see below).

MLT has developed the SUPER-SCREW®. It is a flexible rubber splice to screw on to the belt. MLT specific screws are self-drilling and self-tapping (they spread the carcass threads without cutting them). The screwing system allows Super-Screw® to be installed regardless of the : - Configuration of the conveyor belt, - Access conditions, - Weather conditions.

Simple and practical, the Super-Screw® is versatile ! Super-Screw® used as splice

General data Super-Screw®

35

Belt thickness, mm

4-11

4-13

4-15

Max. belt strength tension, N/mm

315

630

800

Mini. Pulley Ø, mm

160-200

200-300

Thickness top plate, mm

4

Thickness bottom plate, mm

3,8

63

65

5

80

85

100

105

4-15

4-13

125

1 000

4,2

6

7

8

9

5,5

180

200

7-20,5

7-20,5

7-19

1 250

1 800

2 000

300-500

250-350 250-400 300-350 300-400 6

127

7

400-800 500-1 000 8

7

8,5

6

Versions availables A - abrasion resistant (standard) C - heat resistant 150°C (170°C flash) R - heat retardant 170°C (200°C flash) P - very low temperature down to -50°C G - oil resistant (120°C heat resistant)

F - fire resistant and antistatic (DIN 20 340 & 20 284, MHSA)

W - white FDA cover with stainless steel inserts and screws Maximum length : 1,2 Meters

A D VA N TA G E S - Installation without need of physical strength - Quick installation (saves downtime) - Installation under all weather conditions - Installation using battery operated screw driver, no need of electricity power - No use/need of expensive equipment - No need of highly skilled operator - Wear and cut resistant - High tensile strength - Flexible

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- Can be used for a bridge even with different belt carcass - Suitable for high-heat belt up to 200°C - Compatible with small pulley diameter - Compatible with conveyor scraper - No drilling preparation, no template - Self tapping screws through the belt - Available on coil or «ready to use» cut lengths - Many rubber qualities available

SUPER-SCREW® available in 2 variants : «ready to install» or in coil Super-Screw® : «ready to install» Super-Screw® «Ready to install» : the assembly spacers are pre installed : the top part matches the bottom part. It is delivered with screws and PZ bit. Maximum length : 3 Meters.

Delivered with

+

+

Screws

Super-Screw® assembled

PZ bit

Super-Screw® : in coil

p d ro e t n To add

* * SUPER-SCREW®, best way for patch repairs

Screws

PZ bit

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Spacers

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Super-Screw® coil is delivered in 2 coils : the top coil and the bottom coil. You need to quantify the number of screws, spacers and define the PZ bit (PZ2,Ø 5mm or PZ3, Ø 6.3mm). Maximum length : 25 Meters for the Super-Screw® 35 to 105 and 15 Meters for Super®-Screw 125 to 200.

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TECHNICAL DATA General data Super-Screw®

35

Belt thickness, mm

4-11

4-13

4-15

Max. belt strength tension, N/mm

315

630

800

Mini. Pulley Ø, mm

160-200

200-300

Thickness top plate, mm

4

Thickness bottom plate, mm

3,8

63

65

5

80

85

100

105

4-15

4-13

125

1 000

6

7

4,2

8

9

180

200

7-20,5

7-20,5

7-19

1 250

1 800

2 000

300-500

250-350 250-400 300-350 300-400 6

127

7

400-800 500-1 000 8

7

5,5

8,5

6

Specific data for coil Super-Screw®

35

65

80

85

100

105

125

127

180

Coil length, Meter

25

15

Screw Ø, mm

5

6,3

Skiving depth first screwed part, mm

24

50

50

72

266

Skiving depth second screwed part, mm

38

60

60

84

141

Weight top, Kg

11

20

23

Weight bottom, Kg

13

23

47

41

Qty of screws per meter

110

200

280

254

2 750

5 000

7 000

3 810

3

2 buckets2 000

Qty of screws per complete coil Number of bucket (of 2 500 screws) needed

43

39

2 1 box of 250

Spacers needed Number of 25 PZ bag needed

38

200

44

6 boxes of 25 1

Super-Screw® : how to choose ?

0 30 m

m 0 30 m m 0 30 m m

Belt : 900 mm width

Super-Screw® in bias 1/3

4

63

For selecting the right Super-Screw® fastener you have to analyse following points : - The belt tension and the strength of the belt (i.e. EP1000 for 1000 N/mm). - The final belt thickness for the right choice of the screw size (the rubber on the top and the bottom of the belt must be removed in order to reach a flat surface ). - Rubber quality : wear resistant, oil resistant, heat resistant 150°C (170°C flash), heat retardant 170°C (200°C flash) fire resistant, white (FDA) or for very low temperature down to -50°C. Optional with textile on the bottom side or with a PU protection cover. - The possible request of non magnetic splice : select metallic inserts made of amagnetic stainless steel and screws made of stainless steel, or carbon steel inserts and galvanized screws. - The belt width : order a longer fastener of + 10 % minimum of the belt width to have a minimum inclination of 1/3 of the belt width.

SCREWS AND SPACERS SELECTION CHART

Screws size (Ø x L), mm Reference of spacers

7,1 - 9

Screws size (Ø x L), mm Reference of spacers

9,1 - 11

Screws size (Ø x L), mm Reference of spacers

11,1 - 13

Screws size (Ø x L), mm Reference of spacers

13,1 - 15

Screws size (Ø x L), mm Reference of spacers

Final belt thickness, mm

6-8

8 - 10

10 - 11.5

11.5 - 13

13 - 14,5

14.5 - 16

16 - 17.5

17.5 - 19

19 - 20,5

Screws size (Ø x L), mm Reference of spacers Screws size (Ø x L), mm Reference of spacers Screws size (Ø x L), mm Reference of spacers Screws size (Ø x L), mm Reference of spacers Screws size (Ø x L), mm Reference of spacers Screws size (Ø x L), mm Reference of spacers Screws size (Ø x L), mm Reference of spacers Screws size (Ø x L), mm Reference of spacers Screws size (Ø x L), mm Reference of spacers

80

85

100

280

105 280

10 35-4 63-4 5 x 10

65-4 80-4 5 x 12 506

85-4

100-4 5 x 14

105-4 5 x 16

35-6

63-6 5 x 12

65-6 80-6 5 x 14 506

85-6 100-6 5 x 16

105-6 5 x 18

35-8

63-8 5 x 14

65-8 80-8 5 x 16 508

85-8

100-8 5 x 18

105-8 5 x 20

35-10 63-10 5 x 16

65-10 80-10 5 x 18 510

85-10 100-10 5 x 20

105-10 5 x 22

35-12 63-12 5 x 18

65-12 80-12 5 x 20 512

85-12 100-12 5 x 22

105-12 5 x 24

80-14 5 x 22

85-14 100-14 5 x 24 514

105-14

Screws, Ø 6.3 mm and spacers Super-Screw® Number of screws per Meter Number of spacers per Meter

65 200

For Super-Screw® 125 to 200 125

127

180

200

180-8 6.3 x 19.5

200-8 6.3 x 21

180-10 6.3 x 21

200-10 6.3 x 22.5

180-12 6.3 x 22.5

200-12 6.3 x 24

180-12 6.3 x 24

200-12 6.3 x 25.5

180-15 6.3 x 25.5

200-15 6.3 x 27

180-15 6.3 x 27

200-15 6.3 x 28.5

180-17 6.3 x 28.5

200-17 6.3 x 30

180-20 6.3 x 30

200-20 6.3 x 31.5

254 10 125-8 6.3 x 19.5

127-8 6.3 x 21 608

125-10 6.3 x 21

127-10 6.3 x 22.5

125-12 6.3 x 22.5

127-12 6.3 x 24

125-12 6.3 x 24

127-12 6.3 x 25.5

125-15 6.3 x 25.5

127-15 6.3 x 27

125-15 6.3 x 27

127-15 6.3 x 28.5

125-17 6.3 x 28.5

127-17 6.3 x 30

125-20 6.3 x 30

127-20 6.3 x 31.5

610

612

612

615

615

617

620 125-20 6.3 x 31.5 620

180-20 6.3 x 31.5 620

product *

5,1 - 7

63

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Screws size (Ø x L), mm Reference of spacers

35 100

IN

4-5

For Super-Screw® 35 to 105

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Final belt thickness, mm

Super-Screw® Number of screws per Meter Number of spacers per Meter

*

Screws Ø 5 mm and spacers

Belt with specific technical characteristics : monoply, steelcord, hard cover, etc. use longer screws

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ASSEMBLY OF SUPER-SCREW®FROM COILS Ensure to wear adequate PPE

The coils are delivered identified. The remaining length is indicated every meter.

Figure 2

Figure 1 1. Unroll the coils side by side, in the same direction and, for each, measure the length required. 2. Align the top and bottom (refer to Figure 1 to align the two parts). NOTE : You may notice a small gap due to the elasticity of materials.

For Super-Screw® 35 to 105

3. Cut the coils using the MLT cutting press for easiness and quality of the cut, or another cutting tool. The remaining length is indicated every meter. NOTE : MLT manufactures adapted punches. 4. Set the spacers on the internal face of the bottom part of the Super-Screw. First, place the spacer in the first 2 holes of each part, then, every 3 holes. Figure 2

For Super-Screw® 125 to 200

5. Place the top face of the bottom part (the internal face against each other). Figure 1 - WARNING - there is an installation direction : check that the holes on top do correspond with those below. If the two parties are well positioned, the light passes through each hole. 6. Screw the spacers on, starting with the first 2 from each end. Spacer Figures show the internal face of Super-Screw®

Practical tips How to recognize the quality of the Super Screw® rubber?

There is a seal on the top part of the Super-Screw ® which indicates the quality of the rubber. i.e : abrasion resistant seal

How to differentiate the top part from the bottom part? Top part (where we screw) Inner face

6

Bottom part (where we set the spacer) Internal face

Side face

External face

Internal face

(chimneys)

Side face

HOW TO INSTALL YOUR SUPER-SCREW® ? Equipment requested - a Super-Screw® appropriate and assembled (see p 6 ) - a MLT PZ bit - a ruler - a marking pen - a cutter - a powerful electric drill or 18V or 24 V battery - the quantity of screws needed (see p 5) - the MLT skiver

Start screwing by the center, continue by one end, then the other end without twisting Super-Screw®. Keep screwing until the screw catches the underneath thread, and avoid as this stage to compress strongly the belt. NOTE : Screw on a flat and hard thick wooden board.

In order to get into contact both belt ends, unscrew the center part and disassemble the thickness and alignment spacers.

Skive down both top and bottom belt rubber covers with the MLT skiver (check the skived reachback length into the belt on page 4 chart)

Spread the screwing process over the whole of the surface, by first crewing one hole over four along the row. Repeat the operation over the other(s) row(s).

Get into contact the belt end, while ensuring the belt alignment, and resume screwing again the other half of Super-Screw® as shown previously. Then, screw the center part and screw tighly all the screws.

The thin rubber cover over the top metallic inserts will be erased after a short while, allowing a visual control of a correct tightening and positioning, the state and conditions of performance. This has no consequence related to the Super Screw resistance

Chamfer the end of the belt top and bottom as shown. Position Super-Screw® against the belt, ensuring that SuperScrew® is resting against the central spacers.

Screw one hole over two and achieve the operation.

Cut the belt end (opposed to the trailing edge) as shown.

Your Super-Screw® is installed ! product *

Cut your belt with a 1/3 bias (or 10% min of the width of the belt). The other side of the belt should be cut with a bias in the opposite direction.

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- Measure the thickness of the carcass or the belt to choose the correct screw length and the right kind of SuperScrew®. For a better passage over the rollers and the scrapers, provide a bias installation (see page 2).

IN

Areas already screwed are shown in grey

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- SKIVE OR GRIND THE BELT TO INBED THE SUPER-SCREW® SPLICE AND AVOID SOME OVERTHICKNESS - DO NOT USE AN IMPACT WRENCH TOOL - SLIDE UNDERNEATH THE SUPER-SCREW® A THICK WOOD BOARD - DO NOT SCREW ON A DRUM - TAKE APPROPRIATE SAFETY GEAR : PPE

*

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SUPER-SCREW® : Good / Bad

Forbidden

Well done On chevron belts, SuperScrew® has to be installed in « V » or in bias to avoid a violent contact between the return roller” and SS.

Both ends of the belt must be in contact against each other.

It’s important to install Super-Screw® in bias (at least 10% of the belt width) to obtain optimal performance.

Using too long SuperScrew® screws : - makes the transition from the junction noisy - results in the inserts lifting up the screws and possibly tearing off the belt carcass

It is necessary to inbed the Super-Screw® into the belt by skiving off the top and bottom rubber covers of the belt.

To avoid to pull off the inserts and ease up the passage of the screws through the chimneys, the installation of Super-Screw® must be done on a flat and hard thick wooden board.

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SUPER-SCREW® PHOTO GALLERY Installation under all weather conditions

Rain

Snow

Easy to install

Sandstorm

10

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Everywhere, have a Super-Screw® in your crew...

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Quick supply Fabrication rapideR&D

On inventory

Standard products available on inventory

Efficient R&D

Brochures Documentation sur oninternet internet

Training Assistance

Technical advices

MLT, a brand of MINET SAS - It’s also conveyor belt splicing systems, technicals belts, tools .... MLT Belt Fasteners Unit 5, 26-30 Stenhouse Drive Cameron Park, Newcastle. NSW 2285 Ph: 0249 531811 Fax: 0249 531844 Principal: Steve Pryor

Mob: 0458 531811

Distributor

E: [email protected]

W: www.britac.com

The technical content of this document is deemed for information only, and can be modified without preliminary notice.

P

in your crew

© MLT 2012 - DC SS - 07 -12 (01) - ENG

Have a SUPER-SCREW®