Leaf Chains

CONSTRUCTION AND LACING COMBINATIONS
Built of interlaced plates held together by riveted pins. The chain
nomenclature indicates the lacing combinations.

AL SERIES (LIGHT DUTY)
Consisting of link plates of the same
contour and thickness as the pinlink
plates of ANSI roller chains in same
pitch. Mainly used for relatively
constant, low, medium load with
less shock.
BL SERIES (HEAVY DUTY)
Consisting of link plates with the next large size pitch chain of ANSI roller chains. Chiefly used for medium load with greater shock.


Dimensions - Inches
Chain
Number
Lacing
Pitch
Pin
Plate
Avg.
Ult.
Strength
Avg.
Weight
Per Foot
Dia.
Length
Height
Thick-
ness
P
D
L
H
T
Lbs.
Lbs
AL422
2x2
1/2
.156
.317
.402
.060
3,960
.24
AL444
4x4
1/2
.156
.565
.402
.060
7,700
.47
AL466
6x6
1/2
.156
.815
.402
.060
11,660
.71
AL522
2x2
5/8
.2
.417
.506
.078
6,380
.41
AL544
4x4
5/8
.2
.748
.506
.078
12,760
.78
AL566
6x6
5/8
.2
1.079
.506
.078
18,920
1.15
AL622
2x2
3/4
.234
.488
.616
.093
9,020
.53
AL644
4x4
3/4
.234
.878
.616
.093
18,040
1.29
AL666
6x6
3/4
.234
1.27
.616
.093
26,840
1.56
AL822
2x2
1
.313
.616
.818
.12
14,960
.92
AL844
4x4
1
.313
1.12
.818
.12
29,920
1.13
AL866
6x6
1
.313
1.624
.818
.12
45,760
1.65
AL1022
2x2
1 1/4
.375
.819
.976
.154
22,000
1.6
AL1044
4x4
1 1/4
.375
1.465
.976
.154
44,220
3.13
AL1066
6x6
1 1/4
.375
2.11
.976
.154
67,100
4.67
AL1222
2x2
1 1/2
.437
.969
1.18
.185
31,680
2.3
AL1244
4x4
1 1/2
.437
1.74
1.18
.185
63,360
4.5
AL1266
6x6
1 1/2
.437
2.512
1.18
.185
95,040
6.72


Dimensions - Inches
Chain
Number
Lacing
Pitch
Pin
Plate
Hole
Avg.
Ult.
Strength
Avg.
Weight
Per Foot
Dia.
Length
Height
Thick-
ness
Dia.
(min)
P
D
L
H
T
S
Lbs
Lbs
BL423
2x3
1/2
.2
.504
.463
.08
.2019
6,100
0.53
BL434
3x4
1/2
.2
.673
.463
.08
.2019
9,200
0.72
BL446
4x6
1/2
.2
.025
.463
.08
.2019
12,200
1.06
BL523
2x3
5/8
.234
.602
.577
.074
.2374
9,000
0.80
BL534
3x4
5/8
.234
.807
.577
.074
.2374
13,600
1.08
BL544
4x4
5/8
.234
.897
.577
.094
.2374
18,000
1.21
BL546
4x6
5/8
.234
1.106
.577
.074
.2374
18,900
1.52
BL566
6x6
5/8
.234
1.295
.577
.094
.2374
27,200
1.78
BL623
2x3
3/4
.312
.780
.691
.125
.3153
14,300
1.27
BL634
3x4
3/4
.312
1.051
.691
.125
.3153
21,450
1.80
BL644
4x4
3/4
.312
1.169
.691
.125
.3153
28,600
2.04
BL646
4x6
3/4
.312
1.453
.691
.125
.3153
28,600
2.79
BL666
6x6
3/4
.312
1.709
.691
.125
.3153
42,900
3.08
BL822
2x2
1
.375
.783
.95
.156
.3799
23,100
1.73
BL823
2x3
1
.375
.957
.95
.156
.3779
23,100
2.13
BL834
3x4
1
.375
1.291
.95
.156
.3779
34,800
2.94
BL844
4x4
1
.375
1.445
.95
.156
.3779
46,240
3.33
BL846
4x6
1
.375
1.787
.95
.156
.3779
46,200
4.19
BL866
6x6
1
.375
2.122
.95
.156
.3799
69,600
5.00
BL1023
2x3
1 1/4
.437
1.138
1.154
.187
.4409
34,000
3.12
BL1034
3x4
1 1/4
.437
1.539
1.154
.187
.4409
51,000
4.37
BL1046
4x6
1 1/4
.437
2.118
1.154
.187
.4409
68,000
6.19
BL1066
6x6
1 1/4
.437
2.512
1.154
.187
.4409
102,000
7.44
BL1223
2x3
1 1/2
.5
1.362
1.382
.219
.5047
44,600
4.34
BL1234
3x4
1 1/2
.5
1.807
1.382
.219
.5047
66,900
6.08
BL1244
4x4
1 1/2
.5
2.012
1.382
.219
.5047
89,200
6.90
BL1246
4x6
1 1/2
.5
2.48
1.382
.219
.5047
89,200
7.97
BL1446
4x6
1 3/4
.562
2.819
1.610
.250
.5665
121,200
12.00
BL1623
2x3
2
.684
1.736
1.839
.284
.6937
84,300
8.12
BL1634
3x4
2
.684
2.334
1.839
.284
.6937
126,450
11.32
BL1646
4x6
2
.684
3.173
1.839
.284
.6937
168,600
16.09