Ring Discs


For applications where weight is an issue, a lightweight version (option 'L') is available. Stainless steel ring discs are also available, as is the tapped hole option 'N'.


Ring discs can be made to customer's specification, on request. Variations include other diameters, different thicknesses, special holes, registers or other mounting features, and alternative patterns of lightening recess.


J L (Ø x depth)


Assembled Systems 22-23


I M Standard Counterbored Hole H K Chamfer O x 45° N


Tapped Hole Option N


G


Lightweight Option L


Bearings 34-36


F


Part Number


For use with bearing (Ø)


A B ±0.2


C Register Ø


D F G H I ±0.025


J


K L


Lubricators 37


RD25 159 ... J25 ... 159 184 174.4 ±0.039 RD25 255 ... J25 ... 255 280 270.4 ±0.041 RD25 351 ... J25 ... 351 376 366.4 ±0.044 RD44 468 ... J34 ... 468 512 494 ±0.046


184.74 5 15.4 12.25 10.0 4.5 5.75 9 x 6 280.74 5 15.4 12.25 10.0 4.5 5.75 9 x 6 376.74 5 15.4 12.25 10.0 4.5 5.75 9 x 6 512.74 6 26 15.5 12.5 6


7 11 x 7


Pinions 53


External Gear M


DIN912 (not supplied)


N O


5.5 M5 M8 0.5 172.8 0.8 5.5 M5 M8 0.5 268.8 0.8 5.5 M5 M8 0.5 364.8 0.8 6.8 M6 M8 0.5 492 1


P MOD No of teeth 216 336 456 492


Number of Holes


8 8


12 12


Holes within ±0.2 of true position


S°


45 45 30 30


kg~ Standard Lightweight


2.3 5.5


10.2 23.6


1.4 3.0 5.2


12.2 Part Number


RD25 159 RD25 255 RD25 351 RD44 468


XYZ ABC 123


Calculations 54-57


Ordering details: (SS) RD25 351 (L) (P) (N)


SS = Stainless Steel option Leave blank for steel version


Part number


N = Tapped hole option Leave blank for plain holes


P = External gear drive option Leave blank if not required


L = Lightweight option Leave blank if not required


33


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