Nickel-plated chains
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Dimensional parameters
| Chain No. | P itch
P mm |
Roller diameter
d1 max mm |
width
between inner plates b1 min mm |
Pin
diameter d2 max mm |
Pin length
L Lc max max mm mm |
Inner
depth h2 max mm |
P late thickness
t/T max mm |
Breaking load
Q kN/bf |
Weight per meter
q kg/m |
|
| *25NP | 6350 | 330 | 3.18 | 231 | 7.90 | 8.40 | 6.00 | 0.80 | 3.50/795 | 0.15 |
| *35NP | 9.525 | 5.08 | 4.77 | 3.58 | 12.40 | 13.17 | 9.00 | 130 | 7.90/1795 | 033 |
| 41NP | 12.700 | 7.77 | 6.25 | 3.58 | 13.75 | 15.00 | 9.91 | 130 | 6.67/1516 | 0.41 |
| 40NP | 12.700 | 7.95 | 7.85 | 3.96 | 16.60 | 17.80 | 12.00 | 1.50 | 14.10/3205 | 0.62 |
| 50NP | 15.875 | 10.16 | 9.40 | 5.08 | 20.70 | 22.20 | 15.09 | 2.03 | 22.20/5045 | 1.02 |
| 60NP | 19.050 | 11.91 | 12.57 | 5.94 | 25.90 | 27.70 | 18.00 | 2.42 | 31.80/7227 | 1.50 |
| 80NP | 25.400 | 15.88 | 15.75 | 7.92 | 32.70 | 35.00 | 24.00 | 3.25 | 56.70/12886 | 2.60 |
| 100NP | 31.750 | 19.05 | 18.90 | 9.53 | 40.40 | 44.70 | 30.00 | 4.00 | 88.50/20114 | 3.91 |
| 120NP | 38.100 | 22.23 | 25.22 | 11.10 | 5030 | 5430 | 35.70 | 4.80 | 127.00/28864 | 5.62 |
| 140NP | 44.450 | 25.40 | 25.22 | 12.70 | 54.40 | 59.00 | 41.00 | 5.60 | 172.40/39182 | 7.50 |
| 160NP | 50.800 | 28.58 | 31.55 | 14.27 | 64.80 | 69.60 | 47.80 | 6.40 | 226.80/51545 | 10.10 |
| 04BNP | 6.000 | 4.00 | 2.80 | 1.85 | 6.80 | 7.80 | 5.00 | 0.60 | 3.00/682 | 0.11 |
| 05BNP | 8.000 | 5.00 | 3.00 | 231 | 8.20 | 8.90 | 7.10 | 0.80 | 5.00/1136 | 0.20 |
| #06BNP | 9.525 | 635 | 5.72 | 3.28 | 13.15 | 14.10 | 8.20 | 1.30 | 9.00/2045 | 0.41 |
| 08BNP | 12.700 | 8.51 | 7.75 | 4.45 | 16*70 | 18.20 | 11.80 | 1.60 | 18.00/4091 | 0.69 |
| 10BNP | 15.875 | 10.16 | 9.65 | 5.08 | 19.50 | 20.90 | 14.70 | 1.70 | 22.40/5091 | 0.93 |
| 12BNP | 19.050 | 12*07 | 11.68 | 5.72 | 22.50 | 24.20 | 16.00 | 1.85 | 29.00/6591 | 1.15 |
| 16BNP | 25.400 | 15.88 | 17.02 | 8.28 | 36.10 | 37.40 | 21.00 | 4.15/5.1 | 60.00/13636 | 2.71 |
| 20BNP | 31.750 | 19.05 | 19.56 | 10.19 | 41.30 | 45.00 | 26.40 | 4.5/3.5 | 95.00/21591 | 3.7O |
| 24BNP | 38.100 | 25.40 | 25.40 | 14.63 | 53.40 | 57.80 | 33.20 | 6.0/4.0 | 160.0/36364 | 7.10 |
| 28BNP | 44.450 | 27.94 | 30.99 | 15.90 | 65.10 | 69.50 | 36.70 | 7.5/6.0 | 200.00/45455 | 8.50 |
| 32BNP | 50.800 | 29.21 | 30.99 | 17.81 | 66.00 | 71.00 | 42.00 | 7.0/6.0 | 250.00/56818 | 10.25 |
Bush chain: d1 in the table indicates the external diameter of the bush.
#Straight side plates
Note: Duplex & Triplex nickel plated chains are available in all sizes.
Double pitch nickel plated conveyor chains are available upon request
Construction and Features
Plated Roller Chains have corrosion resistance and the attractive appearance of nickel plating for a low cost. The strength and wear resistance are almost the same as standard chains. These chains are a good buy if they are selected correctly. Numbers 25 through 120 are standard.
Generally, small pitch chains are plated before assembling, and large pitch chains are plated after assembling. Either way, the interior surfaces of the components may not receive complete coverage.
Sprockets
Standard sprockets are used. When the application requires no rust, use stainless steel or engineered plastic sprockets. With engineered plastic sprockets, the strength and speed (less than 70 m/min.) are limited.
Selection and Handling
Plated Roller Chains, however well plated, will experience flaking of the plating from the interior surfaces and the roller surface that rotates on the roller guide and impacts the sprocket. If this flaking presents a problem (for example, danger of flakes getting mixed into foods), use stainless steel chains.
Nickel has a higher electrical potential than the base metal. If the nickel plating flakes off, corrosion will progress faster at that point. Zinc plating has a lower electrical potential than the base metal, therefore, the corrosion will progress more slowly. But frequent exposure to acid during the zinc-plating process increases the likelihood of hydrogen embrittlement in the hardened plates. Therefore, zinc plating is not available for some chains.
Nickel plating may also create hydrogen embrittlement. In an application where a broken chain may create serious damage, WP series chain may be a better choice. Of course, safety guards must be installed.
Link plates are shot peened for greater fatigue strength. The plating process reduces the effects of shot peening, therefore, the fatigue strength of plated chain is 10 percent less than that of standard chains.
Plated Roller Chains are prelubricated with mineral oil after assembly. If the prelubrication is unwanted, advise the manufacturer when ordering.
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