HK 4020 Drawn Cup Needle Roller Bearings HK Series High Precision

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Product Description:

Product Specifications:


Model No.: HK 4020

Brand Name: OEM


Net weight: 0.049kg

Material: Chrome steel

Cage: Brass, Steel


1) Precision: P6 P5 P4 P2

2) Noise level: Z1, Z2, Z3, Z4

3) Vibration Level: V1, V2, V3, V4   

4) Clearance: C2, C3, C4     

5) Hardness: 58-63 HRC             

6) Greese: As your requirement, such as SRL, PS2, Alvania R12 and so on.


1.Industrial packing: box

2.Commercial packing: box then into standard carton/wooden Box

3.According customer's requirement


T/T, L/C, Western Union

Delivery time

About 3 to 5 working days


Warrantee: 1 year

Samples: available

OEM: available

Free technical support and after-sales service

Needle roller bearing :

Needle Roller Bearings (needle bearing) is a cylindrical roller with roller

bearings, relative to its diameter, roller both thin and long. This is called needle

roller. Despite having a smaller cross-section, has a higher load bearing capacity,

equipped with a thin and long needle bearing roller (roller diameter D≤5mm,

L / D≥2.5, L is the length of the roller), so radial structure is compact, its

diameter size and load capacity and other types of bearings, minimum diameter,

especially for radial dimensions limited support structure.

Product Applications:

Needle roller bearings are mainly used in car engines, transmissions, compressors, cranes, etc.

HK 4020 Drawn Cup Needle Roller Bearings HK Series High Precision

Our Advantages:

1. Excellent and high quality control

2. Prompt delivery

3. Competitive price

4. Small order accepted 

5. Customers' drawing or samples accepted

6. OEM service

Product Advantages:

1)Bearing Manufactory ( Have our own technical department)

2)High quality products (Long Life and low noise)

3)Well-daserved Reputation (Good Stock Guarantee)

4)Professional service ( Promptly shippment)

5)OEM Service,Sample is available


We have complete process for the production and quality assurance to make sure

our products can meet your requirement. And our quality can compare with the

most chinese famous bearing manufacture. we have the same technology. Such as 
1. Assembly
2. Windage test
3. Cleaning
4. Rotary test
5. Greasing and gland
6. Noise inspection
7. Appearance inspection
8. Rust prevention
9. Product packaging

HK 4020 Drawn Cup Needle Roller Bearings HK Series High Precision

HK 4020 Drawn Cup Needle Roller Bearings HK Series High Precision

HK 4020 Drawn Cup Needle Roller Bearings HK Series High Precision

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Q:How do you get the bearings on your Skateboard to go faster?
DON'T USE WD40!!!!!!!!!! DON'T TAKE YOU'RE BEARINGS APART!!!! WTF SERIOUSLY?!!! WD40 gives you a nice little boost for a minute then all the grit and dirt from the floor makes a nice slushy mess inside your bearings and it deteriorates them and makes them a lot slower so never put WD40 ANYWHERE near your deck. Don't take your bearings apart. when they're made they're nicely sealed so that dirt can't get inside and there is a special oil added to reduce friction and that should never be washed out. If you need fast bearings buy some Bones Reds or Swiss they're by far the best bearings going or if you need to improve yours use some speed cream. You're skate dealer should have some but if not you can get some off the internet for like $5 Just remeber the main rule. NEVER USE WD40!!!!!!!
Q:Question about skateboard bearings.?
Yeah guy. Of direction so one can be first-rate. I've performed that earlier than while I was once more youthful due to the fact I had not anything else lol. Yeah, simply positioned it on and roll your wheels and positioned extra on. Do that for a couple of days in a row and your bearings will probably be spinning and spinning and spinning!
Q:how does a spindle transmit power to the wheel hub if there are bearings beween them? ?
no a spindle does no such thing. spindles are only on rwd cars and trucks. if you have a fwd vehicle you have an axle shaft that goes into a hub assembly
Q:What is a cheap cleaner I could use to clean my skateboard bearings?
You might laugh.... until you try it. Then you will be like... That dude on Yahoo answers was so right. Old trick, but its more for smooth bearings than actual cleaning, although they do get clean in the process. Get a glass. Buy Johnsons and Johnsons baby oil. Fill the glass with enough of the baby oil so when you dump your bearings in there, they are fully immersed. Let those babies sit in there for a few hours. Take out the bearings, wipe all the crap and dirt from them.. clean them real good. Spin them, get the crap out of them. THEN... fill up another glass with the baby oil... same thing, dump all your bearings in there fully immersed. Leave it overnight... wake up next morning, lightly wipe them, assemble your bearings and wheels. Dont OVERTIGHTEN! Just enough that the wheels are solid, but not tightly bolted. Let her rip! Don't be afraid to wear a grin of awesomeness when you discover how much better the bearings are. Find a nice smooth patch of road... take a few pushes, and see how far you roll.
Q:What symptoms come of bad wheel bearings and ball joints?
The bad wheel bearing is a shaky steering wheel while driving or hard pulling to one side when braking. Bad ball joints can be heard while turning or going around corners.
Q:How to clean your skateboard bearings ??¿?
Well, What You Wanna Do is Take Them Off The Wheel, And Get A Piece Of Wet Clothing, And Make Sure its not To Wet, And Not To Dry. And Gently Wipe The Bearing, Dont Scrub it Well Mess Your Bearings up. And After That You wanna Blow On them For a Little Bit, And Let them dry For A Little. And If Can Ask What Type Of Bearings Do you own?
Q:98 Dodge pu - had overhaul , new crank shaft & bearings, still loses oil pressure.?
you may have some blockage in the oil pump or have oil pump failure on it,i rebuilt a 360 a while back and cranked it up and never did get oil pressure,took it back out and found the oil pump wasn't working,i got lucky it didn't cost me an engine,but check the pump and also make sure it didn't spin a bearing on it,that will stop the oil pressure from building up,id pull it back out if i couldn't get no pressure,it has to be in a bearing or a pump or blockage somewhere,good luck.
Q:Is $750 for replacing the front two wheel bearings and a pigtail on a 99 Olds Alero (w/o labor costs) good?
A pig tail is a connection to something. I reccommend if you can get it there, a dealer. Get an estimate first. They have to keep the car drivable if you can't afford it. They also have the special tools needed , and the know how. They should be able to tell you whats what so you can understand it too.
Q:out of the three skateboard bearings which was is the fastest?
sorry to assert yet it is surely the worst set of bearings many times 5 is seen mediocre and seven is acceptable yet in the top it in hassle-free terms concerns in case you skate rapid or not in case you ever wanted to bypass with swifter greater effective bearings bypass with autonomous bearing or the terrific of bearings~ Bones Swiss!
Q:Will my Bones Swiss longboard bearings rust if they get wet?
Yes. You should dry off your bearings after a riding in the rain. You were better off buying 4 or 5 sets of Magic or MileHighSkate bearings for the same price. You can use certain types of lube to make your bearings pretty waterproof, mainly greases. Try using White Lithium Grease, Ballistol, Tri-Flow, Phil's Waterproof Grease, or 3 in 1 Lube. Do not use WD-40

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