Data Sheet - Download it here

Scraper conveyors generally use a single or double strand of chain. Flights are either welded directly onto the chain, or bolted onto the chains attachments.

Scraper conveyors can be horizontal or inclined, with the scrapers moving the product (usually free flowing bulk materials) along the conveyor bed, preventing adhesion whilst still moving the product gently.

The chains used in scraper conveyors are generally a forged chain or a bush chain (i.e. a chain without rollers) as rollers lift the chain/scraper and often jam due to being covered by the conveyed product.

Sugar Mill Scraper Conveyor Chain

The form of the scrapers is often bespoke to the application. On twin strand chains, a cross bar is generally bolted to L attachments on the chain. Some scraper conveyors simply use the bar to move the product, while for deep trough conveyors a further attachment ‘paddle’ would be bolted onto the cross bar, which would then move the product within the trough. Deep trough conveyors are perhaps the only scraper systems where a roller chain could be used, as the chains run above the product being conveyed. Caution should be taken however to protect the chain from product at the inlet.

For single strand chain conveyors, the flights are either welded directly onto the chain both sides, or are bolted on to ‘L’ or ‘F’ type attachments. If a roller chain is used, a deflecting plate is generally installed to deflect bulk materials past the chain and into the feed trough.

Scraper chains have a wide range of uses such as moving feed, ash, cement, wood shavings, slags etc, or scraping settlement tanks (either above or below the water lines) Tank scrapers are often given other names, such as submerged scraper conveyors, submerged flight conveyors or bottom ash handling conveyors.

Caution should be taken when manufacturing and running scraper conveyors to ensure that the system is always tensioned correctly. If the chain starts to ‘sag’, then it is possible for the leading edges of the scraper flights to come into contact with the trough. The contact of the flights with the trough can greatly increase the overall friction of the system, damaging or snapping the chain and flights.

With over 40 years experience in the manufacture of both standard and bespoke chains, we are able to assist with new scraper system designs, or simply 'like for like' chain and scraper flight replacements.

Non Standard Pitches
Bush Only Chains

Special Pins
Surface Coatings

Zinc, Nickel, sherardized etc

Non Standard Links
Drilled Links
Cleaning Flights and Cups
Stainless Steel

Standard 300 series or 400 series hardened round parts

Non Standard Round Parts

V Rollers, special sizes, through pin lubrication etc.

Non Standard Attachments
All types of sprockets & rings to suit
Other Options Upon Request
Dimension Table - 'Standard' Scraper Chains
Note, TS - To Suit Your Requirements.
Chain
No.
P
mm
L
mm
S1
mm
S2
mm
D1
mm
D2
mm
D5
mm
D6
mm
W
mm
D
mm
C
mm
H
mm
A
mm
B
mm
C
mm
E
mm
British Standard
ZS40 TS 15 4 4 25.5 31.75 17 14 19 TS TS 25.4 TS TS TS 9.2
ZS100 TS 19 5 4 38.5 47.5 23/24 19 25.4 TS TS 38.1 TS TS TS 10.5
ZS160 TS 26 7 5 TS 66.7 32 26.9 35 TS TS 51 TS TS TS TS
ZS300 TS 38 10 8 TS 88.9 38 32 42 TS TS 60 TS TS TS TS
Metric M Series
MS20 TS 16 2.5 2.5 12.5 25 9 6 15 TS TS 18 TS TS TS TS
MS40 TS 20 4 4 18 36 11 8 30 TS TS 25 TS TS TS TS
MS56 TS 24 4 4 21 42 15 10 30 TS TS 30 TS TS TS TS
MS80 TS 28 5 5 25 50 18 12 30 TS TS 35 TS TS TS TS
MS112 TS 32 6 6 30 60 21 15 35 TS TS 40 TS TS TS TS
MS160 TS 37 7 7 36 70 25 18 40 TS TS 50 TS TS TS TS
MS224 TS 43 8 8 42 85 30 21 45 TS TS 60 TS TS TS TS
MS315 TS 48 10 10 50 100 36 25 50 TS TS 70 TS TS TS TS
MS450 TS 56 12 12 60 120 42 30 60 TS TS 80 TS TS TS TS
MS630 TS 67 14 14 70 140 50 36 70 TS TS 100 TS TS TS TS
Metric FV Series
FVS40 TS 18 3 3 20 32 15 10 25 TS TS 25 TS TS TS TS
FVS63 TS 22 4 4 26 40 18 12 25 TS TS 30 TS TS TS TS
FVS90 TS 25 5 5 30 48 20 14 30 TS TS 35 TS TS TS TS
FVS112 TS 30 6 6 32 55 22 16 35 TS TS 40 TS TS TS TS
FVS140 TS 35 6 6 36 60 26 18 40 TS TS 45 TS TS TS TS
FVS180 TS 45 8 8 42 70 30 20 45 TS TS 50 TS TS TS TS
FVS250 TS 55 8 8 50 80 36 26 50 TS TS 60 TS TS TS TS
Dimension Table - Drop Forged
Chain
No.
P
mm
H
mm
F1
mm
L
mm
F2
mm
F
mm
D6
mm
BL
kN
SCDF 102 102 36 28 12 7.6 32 14 150
SCDF 142 142 50 42 20 11 46 25 300
SCDF 142H 142 50 62 30 16.5 55 25 450
SCDF 142T 142 50 62 30 16.5 55 25 600
SCDF 200 200 60 62 28 20 58 25 500
SCDF 216 216 72 58 25 18 60 35 582
SCDF 260 260 75 70 31 20 79 32 700
Dimension Table - Block and Bar
Chain
No.
P
mm
H
mm
L
mm
D6
mm
S
mm
BL
kN
SCBB 801 101.6 38 16.5 17.5 6 100
SCBB 852H 152.4 65 54 25.4 15 620
SCBB 850 150 38.1 25 18.5 10 150
SCBB 852 152.4 45 76 22 8 260