The following table shows various types of drop forged chains, together with the respective breaking loads and core/surface hardness.

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Brandon Rogers
5 years ago
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Drop forged chain The drop forged chains supplied by Bechtel are made of heat treated

The following table shows various types of drop forged chains, together with the

E D A C2 B C1 C1 C2 Drop forged chain (parameters in mm ) A B C1 C2 D E Breaking load

000 N x 102 27 11 12 13 36 16 160.000 N x 102 30 8 13 13,5 36 14 140.

000 N x 142 42 13 19 20 50 25 250.000 N x x 142 62 15 29 30 50 25 350.

000 N x 150 36 13 15 16 50 25 400.000 N x 160 42 13 20 21 46 20 300.

1 Drop forged chain The drop forged chains supplied by Bechtel are made of heat treated high grade alloy steel. These links can be equipped with plastic or steel scrapers. The following table shows various types of drop forged chains, together with the respective breaking loads and core/surface hardness. E D A C2 B C1 C1 C2 Drop forged chain (parameters in mm ) A B C1 C2 D E Breaking load Case hardened Q +T 58 HRC 40 HRC N x N x , N x N x N x N x x N x x N x N x N x N x N x x N x N x x N x N x Chain material: 20MnCr5, 42CrMo4, V2A, V4A,

2 h h Pins Bechtel - drop forged chain with easy to assemble plastic flights circlip head pins with thread head pin with circlip Pins for drop forged chains are available in material 16MnCr5, 42CrMo4i, i, i, , head pins with collar and dowel pin Example of welded scrapers Special welded scrapers are available for horizontal, inclined, or vertical transport. In this context, the capacities are taken into consideration. b b b b2 BT scraper for horizontal transport U scraper for inclined transport O scraper for vertical transport Double drop forged chain scraper U scraper with welded plates

There are various kinds of flights available: Nylon, Nylon with Glassfiber reinforcement, Zytel and FDA-quality.

3 Plastic flights Our plastic flights are made of wear-resistant nylon and are flexible. As the chain is carried by the plastic flights, it eliminates the steel-on-steel contact, this will lead to saving energy and a considerable noise reduction. There are various kinds of flights available: Nylon, Nylon with Glassfiber reinforcement, Zytel and FDA-quality. Nylon flights Reduce noice considerably, flexible / bendable under high pressure low frictional resistance, saving up to 20 % of the energy, less costly; less wear and tear of the bottom plate and the chain, eliminates the need for guiding and wearing strips, temperature resistant between -20 C and + 70 C, very quickly and easily assembled or replaced. Nylon flights glass fiber reinforced Same qualities as the Nylon flights but more durable and less flexible for heavier duty. Zytel flights Same qualities as the Nylon flights but temperature resistant between +70 C and +110 C. FDA quality flights Same qualities as the Nylon flights but also suitable for food purposes. Plastic flights (parameters in mm ) Length x height Cc. distance Drop forged chain Double drag link chain of the holes pitch plates 117 x , x5 137 x , 125, x5 170 x , 125, x5 162 x x6, 40x6 112 x , x6, 50x8 162 x , x6, 50x8 212 x , x6, 50x8 262 x , x6, 50x8 300 x , x6, 50x8

4 A1 A2 A Plastic profiles Plastic profiles are made out of different materials, such as: Nylon, PU, and UHMPE. These may be used as flights or as scrapers. The profiles are available in various different versions. This page shows the most common used models. Cleaners Plastic profile attached to the steel scraper. Profile C Plastic profile pushed over the steel scraper. Half moon The so-called half moon profile is attached to the steel scraper. R L L1 L2 Ø

of teeth segments/sprocket 102 6 204,00 4 102 8 266,54 4 125 6 250,00 4 125 8 326,64 4 142 6 284,00 4

5 Sprockets Sprockets for drop forged chain Sprockets for drop forged chains (parameters in mm) available from stock No. of teeth circle Ø No. of teeth segments/sprocket , , , , , , , , , , , , ,62 4 Body with interchangeable teeth segments.

6 Accessories Idler Idler in plastic or steel (parameters in mm) Inner width chain Roller diam. Shaft diam. Thread 25 50/60 20 M10x /60 20 M10x /60 20 M10x /70 20 M10x25 Wear-guiding rails Wear-guiding rails from material X120Mn12 (1.3401) Size (mm) Length (meter) Delivery Weight (kg/m) 35 x 10 2,95-3,10 Stock 2,60 50 x 10 2,95-3,20 Stock 3,75 50 x 20 2,95-3,20 7,67 60 x 10 2,95-3,20 Stock 4,54 70 x 10 2,95-3,20 5,32 70 x 20 2,95-3,20 Stock 10,81

Chain calculations Chain speed in m/sec (v) v = z =

Q = capacity in m3 per hour A = trough width x layer

(mass1) Mass-1 = tons per hour x distance in meters v

Power in Kw (P) ( v x mass-1 x µ1 + mass-2 x µ2) x

000 P = power in Kw mass-1 = material weight on the

product (for a smooth-running product ca.

7 Chain calculations Chain speed in m/sec (v) v = z = number of teeth t = chain pitch (mm) n = rotations per minute z x t x n Capacity in kg per hour (Q) Q = A x v x 3600 sec. Q = capacity in m3 per hour A = trough width x layer height in m2 Material weight on the chain in kg (mass1) Mass-1 = tons per hour x distance in meters v x 3,6 Mass-1 = material weight on the chain in kg Power in Kw (P) ( v x mass-1 x µ1 + mass-2 x µ2) x 9,81 P = P = power in Kw mass-1 = material weight on the chain in kg µ1 = friction between steel and the product (for a smooth-running product ca. 1,15) mass-2 = total chain weight in kg µ2 = friction between the steel bottom and the chain (for steel pushers approx. 0,25 and for plastic pushers approx. 0,15)

Components for bulk handling since 1989

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