L.G.Balakrishnan & Bros Ltd

Bush &
Roller Chains

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Bush and Roller Chains

The bush or roller chains has the alternating inner and outer link plates, the bush is press fitted in to the inner plates which forms the inner link assembly. The pin is press fitted in the outer plate which passes through the bush bore of the inner link assembly. The presence of roller over the bush distinguishing the chain as bush or roller chain. If roller is present over the chain, then the chain is called roller type, otherwise it is bush type.

The roller and bush chains are further classified in to single and multiple row chains. For the engine mechanism drives larger pitch affects smooth running of the drives due to the higher articulation angles, therefore for multiple row chain can be selected depends on the strength requirement.

LGB’s chain can have the features such as Fine blanked links, Shaved links, Straight slit bush , Cross slit bush, Solid bush, Special barrel less bush, Bush with lube hole, Chromised pin, Vanadium coated pin as per the requirements

 SIMPLEX BUSH & ROLLER CHAIN FOR CAM & OTHER MECHANISM CHAIN

SIMPLEX CHAINS

ROLON
CHAIN NO. 
ISO
CHAIN NO. 
CHAIN
DESIGNATION 
PITCH  WIDTH
BETWEEN
INNER
PLATES 
ROLLER
/ BUSH
DIAMETER  
PIN
DIAMETER 
PIN
WIDTH 
INNER
PLATE
HEIGHT 
PLATES
THICKNESS 
TRAVERSE
PITCH 
ULTIMATE
TENSILE
STRENGTH
(min.) (kN)  
AVERAGE
CHAIN
MASS
FOR
100 PITCHES  (kg)
[P]  ød1  ød2  b1  h1  t1  t2 
(min.)  (max.)  (max.)  (max.)  (max.)  (e) 
mm 
B25HSBSN     - 6.35 X 3.18mm  6.35 3.18 3.30 *  2 9 5.9 1 1 -    0.12
R628  - 6 X 2.80mm  6 2.8 4 1.85 7.1 5 0.6 0.6 - 3 0.07
R628HC  - 6.0 X 2.80mm  6 2.8 4 1.85 7.7 5 0.75 0.75 - 3.4 0.08
B25  04C  6.35 X 3.18 6.35 3.18 3.30 *  2.31 7.9 5.96 0.75 0.75 - 3.5 0.09
B25HN 
- 6.35 3.18 3.30 *  2 9 5.9 1 1 - 3.9 0.11
R830  05B-1  8.0 X 3.10mm  8 3.1 5 2.31 8.2 7.1 0.75 0.75 - 4.5 0.14
B25H    - 6.35 X 3.18mm 6.35 3.18 3.30 *  2.31 9 5.9 1 1 - 4.9 0.11
B25HS     - (1/4" x 1/8")  6.35 3.18 3.30 *  2.31 9 5.9 1 1 - 4.9 0.12
B25HBS     - 6.35 X 3.18mm 6.35 3.18 3.3 *  2.31 9 5.9 1 1 - 4.9 0.11
B25HBSC     (1/4" X 1/8") 
B25HSCS   
0.12
B25HSBSC      
B25NBSC     
8.2 1 0.75 0.11
B25N (1/4" X 1/8")  6.35 3.18 3.30 *  2.31 8.2 5.9 1 0.75  - 4.9 0.11
B25HSCT 
6.35 3.18 3.30 *  2.31 10.7 5.9 1.5 1 5 0.15
B748  7.77 X 4.8mm  7.77 4.8 4.57 *  3.17 11.3 7.36 1.27 1 7.4
E439  7.77 X 4.70 mm  7.77 4.7  4.62 *  3.17 11.2 7.46 1.3 1 8 0.26
E259     8.0 X 4.65 mm  8 4.65 4.73 *  3.05 11.6 7.8 1.3 1 8 0.26
E425     8.0 X 4.7mm  8 4.7 5.64 3.05 12.8 7.6 1.32 1.11 8.3 0.3
B848       8.0 X 4.85mm  8 4.85 5.00 *  ø3.17  12.1 7.6 1.3 1 8.5 0.28
B746     7.77 X 4.6mm  7.77 4.6 4.58 *  3.01 12.25 7.5 1.5 1.3 8.8 0.27
R940   
9.525 X 4.0 mm  9.525 4 6.35 3.28 11.2 8.2 1.2 1.2
8.8 0.36
R957     06B-1  9.525 X 5.90mm 9.525 5.9 6.35 3.28 13.3 8.2 1.2 1.2
8.9 0.4
(3/8" X 5.90mm) 
R957N        9.525 X 5.72mm 9.525 5.72 6.35 3.31 13.3 8.2 1.2 1.2
8.9 0.4
(3/8" X 5.72mm) 
E383BS     7.77 X 4.6mm  7.77 4.6 4.62 *  3.17 12.65 7.5 1.5 1.3 9 0.26
E383  7.77 X 4.6mm  7.77 4.6  4.62 *  3.17 12.65 7.46 1.5 1.5 9 0.26
B858     8.0 X 5.80mm  8 5.8 4.76 *  3.17 13.75 7.6 1.5 1.2 9.3 0.31
E425TC     8.0 X 4.70mm  8 4.7 5.64 3.05 12.8 7.6 1.5 1.11 9.4 0.31
B35  06C-1  9.525 X 4.77mm 9.525 4.77 5.08 *  3.58 12.15 8.7 1.27 1.27
10.2 0.33
(3/8" X 3/16") 
B35G     9.525 X 4.77mm 9.525 4.77 3.58 13.2 8.7 1.27 1.27
10.2 0.33
(3/8" X 3/16") 
B219GH      7.77 X 4.7mm  7.77 4.7 4.57 *  3.13 13.2 7.5 1.53 1.27 10.3
R957T     9.525 X 5.90mm 9.525 5.9 6.35 3.31 14.1 8.4 1.5 1.2 10.4 0.43
(3/8" X 5.90mm) 
R957TFC     9.525 X 5.90mm 9.525 5.9 6.35 3.31 14.1 8.32 1.5 1.2 10.4 0.43
(3/8" X 5.90mm) 
B35GH  9.525 X 4.77mm 9.525 4.77 5.08 *  3.58 13.8 9.05 1.34 1.34 10.7 0.37
(3/8" X 3/16") 
B957FCL     9.525 X 5.50mm 9.525 5.5 6.35 *  4.44 13.9 9.6 1.4 1.4 11.5 0.53
B957GCBC      (3/8" X 5.50mm)  6.36 * 
B995  9.525 X 9.525mm 9.525 9.55 6.00 *  4.45 17.65 9.8 1.6 1.2
11.8 0.67
(3/8" X 3/8") 
R957HBNC     9.525 X 5.72mm 9.525 5.72 6.35 3.31 14 8.3 1.3 1.2 11.8 0.44
(3/8" X 5.72mm) 
B975     9.525 X 7.55mm 9.525 7.55 5.00 *  3.54 15.64 9.2 1.6 1.2
12.8 0.51
(3/8" X 7.55mm) 
E263     12.70 X 6.40mm 12.7 6.4 6.63*  3.99 15.15 11.7 1.5 1.5
15.9
(1/2" X 6.40mm) 
B980     9.525 X 8.0mm 9.525 8 6.00 *  4.45 19.9 9.8 2.4 1.8
17.7 0.81
(3/8" X 8.0mm) 
R1278THP     12.70 X 8mm 12.7 8 8.51 4.45 17.9 11.9 1.6 1.5 18.6
(1/2" X 8mm) 
R1278T     12.70 X 8.0mm 12.7 7.9 8.51 4.45 16.9 11.9 1.6 1.5
18.6
(1/2" X 8mm) 
 - Straight plate  * - Bush chain   - Solid Bush     

 MULTIPLE ROW BUSH & ROLLER CHAIN FOR CAM / OTHER MECHANISM CHAIN

DUPLEX CHAINS

TRIPLEX CHAINS

QUADRUPLEX CHAINS

ROLON
CHAIN NO. 
ISO
CHAIN NO. 
CHAIN
DESIGNATION 
PITCH  WIDTH
BETWEEN
INNER
PLATES 
ROLLER
/ BUSH
DIAMETER  
PIN
DIAMETER 
PIN
WIDTH 
INNER
PLATE
HEIGHT 
PLATES
THICKNESS 
TRAVERSE
PITCH 
ULTIMATE
TENSILE
STRENGTH
(min.) (kN)  
AVERAGE
CHAIN
MASS
FOR
100 PITCHES  (kg)
[P]  ød1  ød2  b1  h1  t1  t2 
(min.)  (max.)  (max.)  (max.)  (max.)  (e) 
mm 
DUPLEX CHAINS
DR628  6 X 2.80 mm  6 2.8 4 1.85 12.6 5 0.6 0.6 5.5 4.9 0.13
DR830  05B-2  8.0 X 3.10mm  8 3.1 5 2.31 13.8 7.1 0.75 0.75 5.64 7.9 0.23
DR957     06B-2  9.525 X 5.90mm 9.525 5.9 6.35 3.28 23.5 8.2 1.2 1.2 10.24 17 0.66
(3/8" X 5.90mm) 
DR957M        9.525 X 5.90mm  9.525
DR957N        9.525 X 5.72mm  9.525 5.72 3.31
DR957HPCFC     9.525 X 5.90mm 9.525 5.9 6.35 3.28 23.5 8.2 1.2 1.2 10.24 17 0.73
DR957HPCFC-G    (3/8" X 5.90mm) 
DR957T     9.525 X 5.90mm 9.525 5.9 6.35 3.31 25.6 8.4 1.5 1.2 11.3 18.6 0.75
(3/8" X 5.90mm) 
DB957FCL      9.525 X 5.50mm 9.525 5.5 6.35 *  4.44 23.9 9.6 1.4 1.4 10.24 19 0.9
DB957GCBC      (3/8" X 5.50mm)  6.36 * 
DR957BNC     9.525 X 5.72mm 9.525 5.72 6.35 3.31 23.5 8.26 1.2 1.2 10.24 19 0.75
(3/8" X 5.72mm) 
DB957S      9.525 X 5.75mm 9.525 5.75 6.35*  4.45 23.5 9.6 1.4 1.2 10.24 19 0.86
(3/8" X 5.75mm) 
DB957SN     9.525 X 5.50mm 5.5 1.4 1.2 19
(3/8" X 5.50mm) 
DB35  06C-2  9.525 X 4.77mm 4.77 5.08*  3.58 22.47 8.7 1.27 1.27 10.15 20.1 0.61
(3/8" X 3/16") 
SC55     9.525 X 4.77mm 8.8
(3/8" X 4.77mm) 
SC96  9.525 X 4.77mm 5.58*  9 10.24 0.66
(3/8" X 4.77mm) 
SC96/1  9.575 X 4.77mm  9.575
E264     12.70 X 6.40mm 12.7 6.4 6.63*  3.99 28 11.71 1.5 1.5 13 29.4 1.41
(1/2" X 6.40mm) 




TRIPLEX CHAINS
TB35  06C-3  9.525 X 4.77mm 9.525 4.77 5.08*  3.58 32.65 8.7 1.27 1.27 10.15 23.2 0.83
(3/8" X 3/16") 
TR957      06B-3  9.525 X 5.90mm 9.525 5.9 6.35 3.28 33.6 8.2 1.2 1.2 10.24 24.9 0.93
(3/8" X 5.90mm) 
E304     12.7 X 8.0mm  12.7 8 8.51 4.45 44.65 11.88 1.5 1.3 14.12 45




QUADRUPLEX CHAINS
QB35  9.525 X 4.77mm 9.525 4.77 5.08 *  3.58 42.8 8.7 1.27 1.27 10.15 40.8 1.2
(3/8" X 3/16") 
 - Straight plate  * - Bush chain   - Solid Bush