Roller Chain General Catalog

CORROSION RESISTANT GUIDE

Service Factor

Materials of Component Parts Link Plate

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*

Transmission with large impact

1.5

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)

Superior in corrosion protection to SS and AS Chains

(-270°F to -40°F)

1.0

316 (NS) Series

Non-Magnetic

Fair

(-40°F to 500°F)

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

1.5

Super Stainless™

Magnetic

Excellent

(750°F to 930°F)

1.8

1.2

1.0

1.8

(930°F to 1,100°F)

1.5

1.2

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)

1.8

1.5

(1,300°F to 1,500°F)

2.0

1,500°F to *

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

300 or more, less than 500

1.34

47 or more less than 60

1.02

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

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