BL Series Leaf Chain BL Series Leaf Chain

BL Series Leaf Chain

BL (LH) series leaf chain made to ASME and ISO standards has thicker plates and larger pins. It is commonly used for forklift and material handling applications.

Category: Leaf Chain

| About BL Series Leaf Chain

BL (LH) series leaf chains, also referred as forklift chain, made to ASME and ISO standards are constructed of thicker plates and larger pins than AL series leaf chain of the same pitch. 

The plates and pin diameter have the same sizes of next larger size in roller chains.

For example, BL6 (LH12) uses plate thickness and pin diameter of ANSI 80 roller chain. 

Having high strength and durability, BL series leaf chains are commonly used for lifting equipment, forklift trucks, container lift trucks and material handling applications.

For corrosive environment, corrosion resistant coating is available.


Are you looking for wear resistant and durable leaf chains for your container lift truck?

Check our Harbor Leaf Chain !


| Features

  • Higher strength and longer lifetime than AL series leaf chain of the same pitch.
  • Heat treatment for improved hardness and strength
  • Shot peening for improved fatigue strength 
  • Pre-stretched to minimize initial stretch
  • Pre-lubricated from the factory
  • Corrosion resistant coating available


| How to select leaf chain for your application

1. Determine the type of leaf chains and service factor from below application table.


Shock LoadApplicationChain TypeChain SpeedService Factor


Smooth Running

Smooth start & stop

Slow operating

Gentle vibration


AL Series





Less than 100 ft. / min.


1.0


Moderate Shock

Frequent start & stop

Constant variation of load

Reverse  operating


BL Series


1.3


Heavy Shock

Sudden start & stop

Constant variation of load

Reverse operating


BL Series


1.5


2. Multiply required working load of your lead chain by above service factor and below safety factor to obtain the tensile strength.

Chain TypeChain SpeedMax. numbers of ReciprocationSafety Factor
AL Series
Less than 100 ft. / min.Less than 100 times per day12
BL Series
Less than 100 ft. / min.Less than 1000 times per day9


3. Select proper leaf chain with the minimum tensile strength above the value obtained in step 2.  

Working Load x Service Factor x Safety Factor Leaf Chain with Minimum Tensile Strength 

Working load includes attachments weight, inertia force, and impact force.


BL Series Leaf Chain Dimensions (PDF)

Chain No.ISO/DINLacingPitch (inch)
Pitch (mm)

BL422

BL423

BL434

BL444

BL446

BL466

LH0822

LH0823

LH0834

LH0844

LH0846

LH0866

2x2

2x3

3x4

4x4

4x6

6x6

1/2"12.70

BL522

BL523

BL534

BL544

BL546

BL566

BL588

LH1022

LH1023

LH1034

LH1044

LH1046

LH1066

LH1088

2x2

2x3

3x4

4x4

4x6

6x6

8x8

5/8"15.875

BL622

BL623

BL634

BL644

BL646

BL666

BL688

LH1222

LH1223

LH1234

LH1244

LH1246

LH1266

LH1288

2x2

2x3

3x4

4x4

4x6

6x6

8x8

3/4"19.05

BL822

BL823

BL834

BL844

BL846

BL866

BL888

LH1622

LH1623

LH1634

LH1644

LH1646

LH1666

LH1688

2x2

2x3

3x4

4x4

4x6

6x6

8x8

1"25.40

BL1022

BL1023

BL1034

BL1044

BL1046

BL1066

BL1088

LH2022

LH2023

LH2034

LH2044

LH2046

LH2066

LH2088

2x2

2x3

3x4

4x4

4x6

6x6

8x8

1-1/4"31.75

BL1222

BL1223

BL1234

BL1244

BL1246

BL1266

BL1288

LH2422

LH2423

LH2434

LH2444

LH2446

LH2466

LH2488

2x2

2x3

3x4

4x4

4x6

6x6

8x8

1-1/2"38.10

BL1422

BL1423

BL1434

BL1444

BL1446

BL1466

BL1488

LH2822

LH2823

LH2834

LH2844

LH2846

LH2866

LH2888

2x2

2x3

3x4

4x4

4x6

6x6

8x8

1-3/4"44.45

BL1622

BL1623

BL1634

BL1644

BL1646

BL1666

BL1688

LH3222

LH3223

LH3234

LH3244

LH3246

LH3266

LH3288

2x2

2x3

3x4

4x4

4x6

6x6

8x8

2"50.80

Please refer to above PDF file for detailed dimensions.

Any other inquiry than above specification is welcomed.