NORD Drivesystems B1000 - Manual (Page 74)

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INTRODUCTION
G1000 – Subject to Change Without Notice
Engineering
Shrink Discs
Shrink Discs (S & VS)
Shrink discs eliminate fretting corrosion and allow for
easy shaft mounting and dismounting. Mating shaft tol-
erances are usually tighter for shrink disc shafts due to
the gripping forces needed. The customer shaft diameter
has to be machined according to ISO h6 fi t tolerances,
with a shaft fi nish of 125 micro inches or smoother.
When designing the customer shaft end which inserts into
the shrink disc shaft, it must engage the full length of the hol-
low shaft (ADH). The tolerance of the shaft is to be machined
according to ISO h6. The material used in the custom-
er side shaft end must have a yield strength of at least
52,260 psi (360 N/mm
2 ) so that the compression to create
the friction engagement can be established and that no
deformation occurs.
Contact NORD when using a shrink disc in an application
where the shrink disc connection must simultaneously
transmit torque and thrust.
Clincher™ gear units
Gear unit type Shrink disc Class 10.9 Hexagonal screw
Type T
2max
Safety Factor Size Qty Torque
[lb-in] [h6] [lb-in]
SK 0282NB AZSH SN 30/40 V 1460 5.9 M6 x 35 8 106.2
SK 1382NB AZSH SN 35/46 V 3275 3.8 M6 x 35 10 106.2
SK 1282 AZSH SN 30/40 V 2620 3.3 M6 x 35 8 106.2
SK 2282 AZSH SN 35/46 V 4983 2.6 M6 x 35 10 106.2
SK 3282 AZSH SN 40/55 V 9195 2.3 M8 x 40 8 265.5
SK 4282 AZSH SN 50/62 V 17700 2.2 M8 x 40 10 265.5
SK 5282 AZSH SN 60/76 V 28630 2.5 M10 x 50 10 522.2
SK 6282 AZSH SN 70/90 V 53100 2.3 M12 x 70 10 885.0
SK 7282 AZSH SN 80/108 V 73455 2.5 M12 x 70 14 885.0
SK 8282 AZSH SN 100/128 V 116820 2.3 M16 x 80 8 2212.5
SK 9282 AZSH SN 125/158 V 224790 2.3 M16 x 80 12 2212.5
SK 10282 AZSH SN 160/210 V 329220 3.6 M20 x 100 14 4336.5
SK 11282 AZSH SN 180/230 V 610650 1.9 M20 x 100 12 4336.5
SK 12382 AZSH SN 180/230 V 796500 4.5 M30 x 200 16 15045.0
Heavy Duty Shrink Disc
Gear unit type Heavy Duty Shrink disc Class 10.9 Hexagonal screw
Type T
2max
Safety Factor Size Qty Torque
[lb-in] [h6] [lb-in]
SK 7282 AZVSH SN 85/108 VS 73455 3.90 M16 x 90 10 2212.5
SK 8282 AZVSH SN 100/128 VS 116820 3.57 M20 x 100 8 4336.5
SK 9282 AZVSH SN 130/158 VS 224790 3.89 M20 x 130 12 4336.5
SK 11282 AZVSH SN 180/230 VS 610650 3.69 M24 x 150 16 7434.0
The data listed also applies to Clincher gear units with a higher number of stages.
TAG:
Shrink Disc Type
& Bolt Torque
Reducer Shaft
Customer Solid Shaft
Locking Screws
Outer Clamping
Discs
Inner Ring
(Ferrule)
Do Not
Lubricate!!