CORROSION RESISTANT GUIDE
CORROSION RESISTANT GUIDE
Service Factor
Materials of Component Parts Link Plate
Pin
Bushing
Roller AISI304 AISI316
Type of Impact
Service Factor
304 (SS) 316 (NS) 600 (AS) Super SS
AISI304 AISI316 AISI304
AISI304 AISI316
AISI304 AISI304
Smooth Transmission
1.0
Transmission with some impact
1.3
600 Series HT*
600 Series HT*
600 Series HT*
Transmission with large impact
1.5
Proprietary
Proprietary
Proprietary
Proprietary
*PH - Precipitation Hardened 600 Series includes 17-4PH, 17-8PH, 13-7PH. Each has comporable corrision resistance Double pitch oversized rollers will be AISI304
Speed Coefficient Chain Speed
Speed Coefficient
Performance of Anti-Corrosive Chains Corrosion Resistance
0-50 Ft/min
1.0
Temperature Resistance
Magnetism
Wear Resistance
50-100 ft/min
1.2
Acceptable for outdoor and decorative applciations
100-160 ft/min
1.4
Nickel Plated
(14°F) to (302°F)
Magnetic
Excellent
160-230 ft/min
1.6
Excellent for outdoors, exposure to rain and seawater
Neptune ®
(14°F) to (302°F)
Magnetic
Excellent
Temperature Factor Termperature
(-40°F) to (750°F) (Never use over 930°F)
600 (AS) Series
Good for general acid, alkali and water
Magnetic
Good
AS Series
SS Series
NS Series
Super SS
(-40°F) to (750°F) (Never use below -270°F or above 1,300°F) (-40°F) to (750°F) (Never use below -420°F or above 1,500°F)
304 (SS) Series
Good for general acid, alkali and water
Slightly magnetic due to cold forming parts
Fair
(-270°F)
X
X
X
X
Superior in corrosion protection to SS and AS Chains
(-270°F to -40°F)
X
1.0
1.0
X
316 (NS) Series
Non-Magnetic
Fair
(-40°F to 500°F)
1.0
1.0
1.0
1.0
(-40°F) to (750°F) (Never use above (930°F)
Carbon Steel Strength with 600 Series Corrosion Resistance
(500°F to 750°F)
1.0
1.0
1.0
1.5
Super Stainless™
Magnetic
Excellent
(750°F to 930°F)
1.8
1.2
1.0
1.8
(930°F to 1,100°F)
X
1.5
1.2
X
Chain Selection General selection is based on bearing pressure between the pin and bushing. Anti-corrosive roller chains are normally intended to be used at a slow speed without lubrication. Chain selection should be made based on the bearing pressure as shown below. Maximum Allowable Bearing Pressure Between Pin and Bushing Maximum Operating Speed 304 (SS) 2,131 psi 230 ft/min 316 (NS) 1,420 psi 230 ft/min 600 (AS) 1,420 psi 230 ft/min Chain selection can be made using the following formula Maximum allowable load or maximum bearing pressure can be doubled only when the chain is used in group 1 of the Corrosion Resistance Guide and properly lubricated
(1,100°F to 1,300°F)
X
1.8
1.5
X
(1,300°F to 1,500°F)
X
X
2.0
X
1,500°F to *
X
X
X
X
X: Not suggested Use in temperatures exceeding 750F requires increased clearances to accommodate thermal expansion. Consult Tsubaki prior to ordering.
RPM Factor Kn factor Kz RPM Kn
RPM Factor Kn
Number of Teeth Kz
Teeth factor Kz
Less than 27
1.00
9 or more, less than 12
1.16
27 or more, less than 37
1.03
12 or more, less than 15
1.14
37 or more, less than 50
1.07
15 or more, less than 18
1.12
Maxium Allowable Load The chains maximum allowable load can be obtained by the formula: (Maximum allowable bearing pressure) ●• (Bearing area between pin and bushing) Chain AS Series SS Series
50 or more, less than 70
1.10
18 or more, less than 24
1.10
70 or more, less than 100
1.14
24 or more, less than 30
1.08
100 or more, less than 150
1.19
30 or more, less than 38
1.06
NS Series
Super SS
150 or more, less than 300
1.27
38 or more less than 47
1.04
25 35 40 50 60 80
26 60 99
26 60 99
300 or more, less than 500
1.34
47 or more less than 60
1.02
90
500 or more, less than 1,000
1.44
60 or higher
1.00
150 231 346 596
810*
1,000 or more, less than 2,000
1.54
154 231 397 573
154 231 397 573
1,430* 1,980* 3,300* 5,070*
2,000 or more, less than 4,000
1.65
100
Chain Selection Method Chain Selection can be made using the following formula Maximum Chain Tension X Service Factor
*NOTE - If chain is not lubricated, MAL is 1/3 of published value.
Temperature Factor
Tooth Factor (Kz)
Maximum Allowable Load
≤
X RPM Kn X
X
67
68
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