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Internal Freewheels ZZ
Internal Freewheels ZZ … are sprag freewheels from Suma one way clutch bearing supplier
with bearing support and ball bearing properties.
The freewheels are supplied grease-filled
for normal operating conditions.
The freewheel is built into the customer
housing. This makes compact, space-saving
fitting solutions possible.
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Product Detail

Internal Freewheels ZZ

Internal Freewheels ZZ … are sprag freewheels from Suma one way clutch bearing supplier with bearing support and ball bearing properties.The freewheels are supplied grease-filled for normal operating conditions. The freewheel is built into the customer housing. This makes compact, space-saving fitting solutions possible.

Different types of Internal Freewheels ZZ

Sizes of Internal Freewheels ZZ

Freewheel SizeMaximum torque
MM
Nominal torque
MN
Maximum speedLoad rating of bearing supportBore dBDKWeight
dynamic Cstatic C0
lb-ftNmlb-ftNmrpmlbfNlbf Ninchmminchmminchmminchmmlbskg
ZZ 83.85,01.92.515 0007203 2001948600.31580.35490.866221.063270.050.02
ZZ 620113.818.66.99.310 0001 3706 1006102 7000.472120.394101.260321.535390.090.04
ZZ 620238.652.019.326.09 4001 3506 0008303 7000.591150.433111.378351.654420.140.06
ZZ 620350.468.025.234.08 2001 6507 3501 0254 5500.669170.472121.575402.008510.180.08
ZZ 620496.2130.048.165.06 8002 25010 0001 4156 3000.787200.551141.850472.283580.260.12
ZZ 6205118.6160.059.380.05 6002 47511 0001 5757 0000.984250.591152.047522.480630.330.15
ZZ 6206251.8340.0125.9170.04 0003 37515 0002 25010 0001.181300.630162.441622.874730.550.25
ZZ 6207259.2350.0129.6175.03 6002 81012 5001 6207 2001.378350.669172.835723.346850.660.30
ZZ 40481.4650.0240.7325.03 0003 48515 5002 75512 2501.575400.866223.150803.710941.100.50


Mounting
The torque is transmitted on the inner ring and outer ring by press fit. In order to transmit the torques specified in the table, the outer ring must be installed in a housing with an external diameter K. The housing should be made of steel or grey cast iron in minimum quality GG- 20. When using other housing materials or smaller external diameters, we urge you to contact
us regarding the transmissible torque.

The tolerance of the housing bore D must be ISO N6 and the tolerance of the shaft must be ISO n6.

The permissible operating temperature of the freewheel is - 40°F to +175°F.

Lubrication
The freewheels are supplied grease-filled for normal operating conditions. However, the freewheels can also be connected to the customer´s oil lubrication system; this is particularly recommended in the case of higher speeds.

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