NF Roller Type Freewheel

Type NF is a roller type freewheel non-bearing supported, bearings are regured to support arial and radial loads. Lubrication and sealing must also be provided by the installation.standard lubrication is grease.The nominal outside diameter is a standard ball bearing dimension.

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Description

The NF Roller Type Freewheel is non-bearing supported. It needs extra bearings to support axial and radial loads.Lubrication and sealing must also be provided by the installation.standard lubrication is grease.The 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.
The inner race is keyed to the shaft, the outer race has a positive N6 tolerance to give a press fit in a K7 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.

Type
Nominal Torque nmin nmax Dimension Weight
N.m r/min r/min d D H H1 L L1 L2 L3 C d1 kg
NF10 1000 450 1500 40~50 190 273 150 176 25 20 5 145 28 27
NF16 1600 45~60 208 295 160 182 22 150 32 31
NF25 2500 425 50~70 230 323 170 190 25 155 38 38
NF40 4000 60~80 245 350 185 207 28 30 166 42 49
NF63 6300 400 70~90 260 370 195 221 30 35 180 45 62
NF80 8000 80〜100 275 396 210 226 35 35 185 48 73
NF100 10000 375 90~110 295 425 225 261 45 220 52 98
NF125 12500 100~130 330 473 250 296 40 50 8 250 58 154
NF160 16000 1000 110〜140 360 512 270 306 55 260 62 175
NF200 20000 350 120~150 400 565 300 306 50 58 260 65 214
NF250 25000 130~160 430 620 335 316 63 270 70 256

Note: The hole tolerance is E7, and the recommended shaft tolerance is h6. The keyway dimensions follow the GB/T 1095-1979 standard. For the width deviation, the shaft uses N9 and the hub uses JS9.

Keyway dimensions
d >40~44 >40~50 >50~58 >58~65 >65~75 >75~85 >85~95 >95~110 >110~130 >130~150 >150~160
bn*tn 12*3.3 14*3.8 16*4.3 18*4.4 20*4.9 22*5.4 25*5.4 28*6.4 32*7.4 36*8.4 40*9.4
Packing&Shipping & Delivery

china Packing Shipping Delivery

Packing Shipping Delivery

Chains package: First we will use carton package the chains--------then put in wooden box.
We also can custom color package according to your demand
Company Profile
Company Profile
FAQ

How to choose power transmissions parts and industrial products which meet our requirement

Chains Sprockets Pulleys Timing belt Pulley V-belt Pulley
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Locking Assembly Pulley Gearbox Reducer Shaft Collar
Rod End Bearing Clevis PTO Chain Guide Belt Guide
Rubber Buffer Chain Tensioner PTO Drive Shafts Universal Joints Roller Chains
Conveyor Chains V-Belts Worm Gearbox Helical Gear Worm
Agricultural Chain CNC Proces Parts Casting Stamping
Powder Metallurgy CNC Proces Parts Casting Stamping

What Products Do you sell ? 

We  are a group of factories, give customer one stop solution of power transmission and industrial products. We are in the position to supply wide range of products, including chains, sprockets, v-belt and v-belt pulleys, timing belt and timing belt pulleys, gears, speed reducers, motors, racks, couplings, and many other parts, like locking assembly, taper bushing, Chain guide, shaft collar, torque limiter, cam clutch, universal joint, motor base and motor slide, rod end, clevis, rubber mount, etc. We make special parts according to drawings and/or samples.

How to choose a gearbox which meets our requirement?
You can refer to our catalogue to choose the gearbox or we can help to choose when you provide
the technical information of required output torque, output speed and motor parameter etc.

What information shall we give before placing a purchase order?
a) Type of the gearbox, ratio, input and output type, input flange, mounting position, and motor informationetc.
b) Housing color.
c) Purchase quantity.
d) Other special requirements.

What industries are your gearboxes being used?
Our gearboxes are widely used in the areas of textile, food processing, beverage, chemical industry,
escalator,automatic storage equipment, metallurgy, tabacco, environmental protection, logistics and etc.

What is the producing process?

Production process including raw material cutting, machine processing, grinding, accessories cleaning, assemble, cleaning, stoving, oil coating, cover pressing, testing, package.

How to control the products quality?

Combining advanced equipment and strict management, we provide high standard and quality bearings for our customers all over the world.

What is the transportation?

-If small quantity , we Suggest to send by express, such as DHL,UPS, TNT FEDEX. If large amount, by air or sea shipping.

Can we design packaging?

-Yes. Default is regular packing, and we can make customer's own packing.

Can you provide OEM service?

-Yes, we work on OEM orders. Which means size, quantity, design, packing solution, etc will depend on your requests; and your logo will be customized on our products.

Can you give me discount on Power Transmissions Parts and Industrial parts?

-Yes, of course. Pls. send me your Email, you'll get more

Q: Are You a trading company or a manufacturer?

A: We Are the factory and have our Own trading company

Q: How Can I get an offer?

A: please send US quotation information: drawings, materials, weight, quantity and requirements, we can accept PDF, ISGS, DWG, STEP file format. If you don't have the drawings, please send us the samples, we can also quote you according to your samples.

Q: What is your minimum order size?

A: it is usually 100 pieces, but a low quantity is acceptable under some special circumstances.

Q: Do you provide samples? Is it free or extra?

A: Yes, we can provide samples free of charge, but we don't pay the freight.

Q: What is the lead time for mass production?

A: honestly, it depends on the number of orders. Normally, if you don't need the tools, deposit them after 30 days or so.

Q: What if the parts don't Work?

A: we can guarantee the quality, but if it happens, please contact us immediately, take some photos, we will check the problem and solve it as soon as possible.

Q: What are your terms of payment?

A: payment is less than US $1000,100% in advance. Payment: $1000,50% wire transfer in advance, balance before shipment,Other Terms of payment are negotiable