Nf Series Roller Type Freewheel Bearing

December 13, 2018

Model NO.: NF
Seal Type: Seal
OEM: Accept
Export: Worldwide
Delivery: 10-15days
Trademark: SUMA or OEM
Transport Package: Single Box or as Your Requirements
Specification: P6
Origin: Changzhou, Jiangsu, China
HS Code: 84836000
Model NO.: NF
Seal Type: Seal
OEM: Accept
Export: Worldwide
Delivery: 10-15days
Trademark: SUMA or OEM
Transport Package: Single Box or as Your Requirements
Specification: P6
Origin: Changzhou, Jiangsu, China
HS Code: 84836000

Nf Series Roller Type Freewheel Bearing
Nf Series Roller Type Freewheel Bearing

Description of Nf Series Roller Type Freewheel Bearing

Type NF is a roller type freewheel non-bearing supported. Bearings are required to support axial and radial loads. Lubrication and sealing must also be provided by the installation.

Standard lubrication is oil. Nominal outside diameter is a standard ball bearing dimension. A typical arrangement is to install this type alongside a bearing with the same housing tolerances, as shown on the following page. The inner race is keyed to the shaft. The outer race has a positive n6 tolerance to give a press fit in a H7 housing. Additional side notches provide for positive torque transmission.

If the housing tolerance is to K6, use of the notches is not necessary, but the housing must be strong enough to not expand after assembly.

Parameter sheet of Nf Series Roller Type Freewheel Bearing

Nf Series Roller Type Freewheel Bearing

Type Size   Overrunning speeds   Weight
NF dH7 TKN1) nimax2) namax3) Dn6 D5 D6 L t bH11 r r1  
[mm] [Nm] [min-1] [min-1] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [kg]
8 20 5000 6000 37 30 20 20 3 6 1 1.5 0.1
12 20 5000 6000 37 30 20 20 3 6 1 1.5 0.1
15 78 4500 5400 47 37 26 30 3.5 7 1.5 1.5 0.3
20 188 3000 3600 62 52 37 36 3.5 8 2 2 0.6
25 250 2200 2600 80 68 49 40 4 9 2.5 2 1.1
30 500 1800 2100 90 75 52.5 48 5 12 2.5 2 1.6
35 663 1600 1950 100 80 58 53 6 13 2.5 2.5 2.3
40 1100 1250 1700 110 90 62 63 7 15 3 2.5 3.1
45 1500 1100 1500 120 95 69 63 7 16 3 2.5 3.7
50 2375 850 1300 130 110 82 80 8.5 17 3.5 3 5.4
55 2500 800 1200 140 115 83 80 9 18 3.5 3 6.1
60 4250 700 1100 150 125 93.5 95 9 18 3.5 3.5 8.5
70 5875 620 900 170 140 106 110 9 20 3.5 3.5 13
80 10000 550 800 190 160 122 125 9 20 4 3.5 18
90 17250 480 700 215 180 133 140 11.5 24 4 4 25.3
100 19625 400 600 260 210 157 150 14.5 28 4 4 42.1
130 34750 300 480 300 240 188 180 17 32 5 5 65
150 44375 250 400 320 260 205 180 17 32 5 5 95


Mounting Example
Nf Series Roller Type Freewheel Bearing
Packaging
Nf Series Roller Type Freewheel Bearing
Nf Series Roller Type Freewheel Bearing
 

Nf Series Roller Type Freewheel Bearing
Nf Series Roller Type Freewheel Bearing

Description of Nf Series Roller Type Freewheel Bearing

Type NF is a roller type freewheel non-bearing supported. Bearings are required to support axial and radial loads. Lubrication and sealing must also be provided by the installation.

Standard lubrication is oil. Nominal outside diameter is a standard ball bearing dimension. A typical arrangement is to install this type alongside a bearing with the same housing tolerances, as shown on the following page. The inner race is keyed to the shaft. The outer race has a positive n6 tolerance to give a press fit in a H7 housing. Additional side notches provide for positive torque transmission.

If the housing tolerance is to K6, use of the notches is not necessary, but the housing must be strong enough to not expand after assembly.

Parameter sheet of Nf Series Roller Type Freewheel Bearing

Nf Series Roller Type Freewheel Bearing

Type Size   Overrunning speeds   Weight
NF dH7 TKN1) nimax2) namax3) Dn6 D5 D6 L t bH11 r r1  
[mm] [Nm] [min-1] [min-1] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [kg]
8 20 5000 6000 37 30 20 20 3 6 1 1.5 0.1
12 20 5000 6000 37 30 20 20 3 6 1 1.5 0.1
15 78 4500 5400 47 37 26 30 3.5 7 1.5 1.5 0.3
20 188 3000 3600 62 52 37 36 3.5 8 2 2 0.6
25 250 2200 2600 80 68 49 40 4 9 2.5 2 1.1
30 500 1800 2100 90 75 52.5 48 5 12 2.5 2 1.6
35 663 1600 1950 100 80 58 53 6 13 2.5 2.5 2.3
40 1100 1250 1700 110 90 62 63 7 15 3 2.5 3.1
45 1500 1100 1500 120 95 69 63 7 16 3 2.5 3.7
50 2375 850 1300 130 110 82 80 8.5 17 3.5 3 5.4
55 2500 800 1200 140 115 83 80 9 18 3.5 3 6.1
60 4250 700 1100 150 125 93.5 95 9 18 3.5 3.5 8.5
70 5875 620 900 170 140 106 110 9 20 3.5 3.5 13
80 10000 550 800 190 160 122 125 9 20 4 3.5 18
90 17250 480 700 215 180 133 140 11.5 24 4 4 25.3
100 19625 400 600 260 210 157 150 14.5 28 4 4 42.1
130 34750 300 480 300 240 188 180 17 32 5 5 65
150 44375 250 400 320 260 205 180 17 32 5 5 95


Mounting Example
Nf Series Roller Type Freewheel Bearing
Packaging
Nf Series Roller Type Freewheel Bearing
Nf Series Roller Type Freewheel Bearing
 

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