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Basic Info


Chain
No.
 

Assembly
 

Pitch
A

Pin
Dia.
D

Plate

Overall Width

Maximum
Allowable
Load (lbs)
 

Average
Ultimate
Strength (lbs)
 

Average
Weight Per Foot (lbs)
Riveted





Height
H

Thickness
T

E




BL-423

2X3

1/2

0.2

0.457

0.080

0.51

1,000

6,100

0.48

BL-434

3X4

1/2

0.2

0.457

0.080

0.68

1,190

9,300

0.64

BL-446

4X6

1/2

0.2

0.457

0.080

0.93

1,340

12,300

0.93

BL-523

2X3

5/8

0.234

0.571

0.094

0.60

1,540

9,100

0.74

BL-534

3X4

5/8

0.234

0.571

0.094

0.80

1,870

13,700

1.03

BL-546

4X6

5/8

0.234

0.571

0.094

1.08

2,100

18,100

1.46

BL-623

2X3

3/4

0.312

0.708

0.125

0.78

2,200

13,700

1.21

BL-634

3X4

3/4

0.312

0.708

0.125

1.04

2,750

20,600

1.68

BL-646

4X6

3/4

0.312

0.708

0.125

1.43

3,080

27,400

2.38

BL-823

2X3

1

0.375

0.948

0.156

0.96

3,800

23,200

2.05

BL-834

3X4

1

0.375

0.948

0.156

1.28

4,600

35,100

2.85

BL-846

4X6

1

0.375

0.948

0.156

1.77

5,280

46,300

4.06

BL-1023

2X3

1 - 1/4

0.437

1.154

0.187

1.13

5,830

32,200

2.95

BL-1034

3X4

1 - 1/4

0.437

1.154

0.187

1.52

7,000

50,400

4.08

BL-1046

4X6

1 - 1/4

0.437

1.154

0.187

2.11

8,140

64,500

5.79

BL-1223

2X3

1 - 1/2

0.500

1.382

0.220

1.33

8,250

41,300

4.15

BL-1234

3X4

1 - 1/2

0.500

1.382

0.220

1.80

9,900

67,000

5.85

BL-1246

4X6

1 - 1/2

0.500

1.382

0.220

2.47

11,300

82,600

8.30

BL-1423

2X3

1 - 3/4

0.562

1.610

0.250

1.52

11,000

52,400

5.57

BL-1434

3X4

1 - 3/4

0.562

1.610

0.250

2.05

13,200

86,200

7.75

BL-1446

4X6

1 - 3/4

0.562

1.610

0.250

2.82

15,100

104,800

11.03

BL-1623

2X3

2

0.687

1.839

0.281

1.72

13,200

78,100

7.51

BL-1634

3X4

2

0.687

1.839

0.281

2.33

15,800

118,300

10.45

BL-1646

4X6

2

0.687

1.839

0.281

3.21

18,000

156,300

14.85


Product Description

LEAF CHAINS
 

Leaf chains are known for their durability and high tensile strength. They are primarily used in lift device applications such as forklifts, lift trucks, and lift masts. These hard working chains handle the lifting and balancing of heavy loads with the use of sheaves instead of sprockets for guidance. One of the primary differences with leaf chain compared to roller chain is that it only consists of a series of stacked plates and pins, providing superior lifting strength.
Leaf chains are built of interlaced plates held together by rivet pins. They are built with the same high degree of precision as our roller chains. HKK Leaf chains are used for applications that require strong flexible linkage for transmitting motion or lift. Specially selected steel and unique heat treatment assures high strength and durability. The first number or numbers in leaf chains identifies the chain pitch, the last two numbers identify the chain's lacing. New applications should use BL series leaf chains.

Leaf Chain is the most simple of steel chains, consisting only of link plates and pins. This chain generally has greater tensile strength than roller chains and runs over sheaves rather than sprockets. They are suitable for hanging, balancing or motion transmitting applications. Leaf chains are often used as counterweight chains for machine tools, elevator and oven doors, fork lift truck masts, spinning frames and similar lifting or balancing applications.

Plates are connected by pins and hold the tension loaded on the chain.


LEAF CHAINS STRENGHTH 


Leaf chains are famous with engineers for their strength in materials handling, such as with forklifts, lift trucks, lift masts, straddle carriers, and other major works of civil engineering. Their long service life, high fatigue strength and maximum wear resistance make them the ideal solution for long-term projects that need to be both reliable and incredibly strong. The compact design of leaf chains allows them to fit well within a variety of systems. The key parts of a leaf chain include:

Link Plates: Close control of the plate dimensions allows for high fatigue strength and long service life.
Pins: The pins pass through the plates and are subject to shearing forces, while the plates articulate on the pins through rotation over the sheave.



AL SERIES TYPE  AND BL SERIES TYPE 


The American National Standards Institute (ANSI) determines consensus standards for a wide range of products and processes in the U.S. that are also adopted worldwide. This regulatory body provides the chain industry with specifics around size and strength that govern the manufacture of different types of chains, including leaf chains and roller chains. While these standards do not often change, AL Series was removed from ANSI Standard in 1975. The newer edition of the standard is BL Series, which replaced the AL Series. AL and BL Series are dimensionally different. BL Series has a higher tensile strength than AL Series and is more commonly used today. However, older machinery may still use the AL Series of leaf chain, which is still offered by Qingdao Star Machine Technology Co., Ltd. in a variety of different sizes.

When you need a leaf chain to keep your project in balance, contact the experienced professionals at Qingdao Star Machine Technology Co., Ltd. If you're not sure exactly what type or size of chain that you need, we have decades of experience working with customers to provide the ideal chain or sprocket to keep you moving.  We have a full line of Leaf AL Series Chains as well as Leaf BL Series Chains.


Plate configuration and thickness are the same as ANSI G8 roller chain. Pin diameter is almost the same as ANSI G8 roller chain.

BL Series leaf chains consist of link plates which are thicker and larger in contour than the AL Series link plates of the same pitch. The link plateave the same thickness as the link plates of the next larger pitch size in ANSI G8 roller chains. The pins have the same diameter as those of ANSI G8 roller chains of the next larger pitch.
For Applications That Required Strong Flexible Linkage | Ideal for Lifting Applications | Specially Selected Steel | Unique Heat Treatment Process.



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