• HK 3812 Drawn Cup Needle Roller Bearings HK Series High Precision System 1
  • HK 3812 Drawn Cup Needle Roller Bearings HK Series High Precision System 2
  • HK 3812 Drawn Cup Needle Roller Bearings HK Series High Precision System 3
  • HK 3812 Drawn Cup Needle Roller Bearings HK Series High Precision System 4
  • HK 3812 Drawn Cup Needle Roller Bearings HK Series High Precision System 5
  • HK 3812 Drawn Cup Needle Roller Bearings HK Series High Precision System 6
HK 3812 Drawn Cup Needle Roller Bearings HK Series High Precision

HK 3812 Drawn Cup Needle Roller Bearings HK Series High Precision

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Loading Port:
Shanghai
Payment Terms:
TT OR LC
Min Order Qty:
1 set
Supply Capability:
900000 set/month

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Product Specifications:


Specification

Model No.: HK 3812

Brand Name: OEM

Size:38*45*12mm

Net weight: 0.026kg

Material: Chrome steel

Cage: Brass, Steel

Features:

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.

Packing

1.Industrial packing: box

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

3.According customer's requirement

Payment

T/T, L/C, Western Union

Delivery time

About 3 to 5 working days

Services

Warrantee: 1 year

Samples: available

 OEM: available

Free technical support and after-sales service


Seal/close type Drawn cup needle roller bearings HK:

1.Strong load 
2.High performance work 
3.Lubrication 
4.high speed

Product Applications:


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

HK 3812 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


Shipping:


1.small quantity, can delivery by global express: DHL TNT FedEx ARAMEX EMS UPS.

this is door to door.

2.large quantity, can delivery by air, by sea, this is port to port.

 

Payment:


T/T, L/C, Money Gram, Payal, Western Union etc.

 

Lead Time:


Sample Lead-times: generally 3-5 workdays.
Production Lead-times: 3-5 days after get payment or as contract required



FAQ:


WHY CHOOSE US ???

1.More than 28 years export experience

2.Strict quality control

3.Delivery in time

4.OEM service are available with good price

5.Low MOQ


HK 3812 Drawn Cup Needle Roller Bearings HK Series High Precision

HK 3812 Drawn Cup Needle Roller Bearings HK Series High Precision

HK 3812 Drawn Cup Needle Roller Bearings HK Series High Precision






Q:I have just gotten into skateboard and getting quite good now I plan to get better bearings.
bones red bearings are the best bearings out there, and they are really cheap
Q:can i make my own ball bearings for hubs, bottom bracket, etc. from a ceramic mug or the like? if its possible, what tools do i need? can i get it done at a machine shop? i would only do this if its cheaper than buying them pre-made, which in case you didnt know, can cost several hundred dollars for a full set.
Yes you can make your own ball bearings... but there's a reason they're mass produced. The machinery involved is expensive, but once set up they're incredibly easy to mass produce... So, to be frank - you're probably better off spending the couple of hundred for a set. Odds on, the cost of getting them made for you will be in the thousands rather than in the hundreds... Just my .01 -dh
Q:How do I work out this bearings problem?A helicopter flies 15km on a bearing of 053, then 7km on a bearing of 112. How far north is the helicopter from its starting position?
This problem needs some thought since when you use directions North and bearing 0 degrees is at the top of the page But, in math, if you use degrees, 0 is usually to the right. To translate, so your calculator will give the correct answer, subtract the bearings from 90 degrees. So 90 degrees minus 53 degrees equals 37 degrees. The distance to the east is equal to cosine of 37 degrees times 15km = 12 km Sine of 37 degrees times 15km equals 9km So the first leg he ended up 12 km east and 9 km north of original position. Then to translate the 112 degrees, subtract it from 90 to get -22 degrees Cosine of -22 times 7km equals 6.5 km and Sin -22 times 7km equals -2.6km. The second leg took him 6.5km farther east and 2.6km south since the 2.6 was negative, it is in the direction south. Next, add the two together Cos + Cos for the travel east and you get 12 + 6.5 so he ended up 18.5km east of the starting point Add the Sines for the north/south directions. 9 -2.6=6.4 km north of starting position.
Q:Im just wondering how important it is to clean and regrease a cars wheel bearing. Working as a bicycle mechanic, this is something I do on a daily basis to every other bike we work on. And so Ive always wondered why I dont hear about wheel bearing going out on cars, or why I dont hear about having them serviced...Im assuming they are sealed bearings, but still it seems like they should need serviced every so often. I drive an early 90s ford truck, nothing fancy. Is this something I should consider doing, or should I not worry about it unless they start making noise?Thanks!
you rarely hear them going out on cars because most of the time the symptom gets disguised by worn brakes, when its the wheel bearing your brakes will get worn quicker, if you have a hub rotor designed for brakes then every time someone takes out the rotor they should have cleaned and repacked that rotor. if you have a floating rotor the bearings are pressed in and not really practical for servicing
Q:Tires are so-so. Can't afford to do all at once. Will have to do 2 tires, 2 tires, Wheel-bearings each on a different pay-day.
Bearings, it could damage other parts not replacing them.
Q:I have been checking with at least 3 different mechanic about ongoing problem in my Buick park avenue 2003.only one told me that I need to replace both front bearings and also asking me to replace tires(which I did and problem still exists) also right front tie rod..none of these other mechanic are sure what is the problem..Problem is this...Car seems pulling(no break problem) and wheels wobbling..making wide turns..what is could be?looks like all these mechanic don't want to deal with to fix my bearings..what you say?
take it to a GM dealer. their techs will perform the proper diagnostics and fix it. they'll get it done right instead of these chain mechanic shops
Q:can skateboard bearings fit in scooter wheels
yes skateboard bearings fit into scooter wheels to but i prefer to get swiss bearings cause they go on forever
Q:For my college engineering design project my team is basically designing a mousetrap car that has to travel a minimum distance of 3 meters and the dimensions are 20cm X 10cm X 10cm. The car will rely on its coasting phase to travel the majority of this distance so the reduction of friction between the axle and body needs to be at a minimum. I was thinking of using ball bearings for high quality rc cars but the only problem I face is how to keep them in the body which is basically a sheet of aluminum with two 1 cm edges bent 90 degrees downward with an 8 cm hole drilled through each side for the axles (od of bearings is 8 cm). I was thinking of using epoxy to keep them in but id like to hear other opinions.
Ball Bearing Mouse Trap
Q:Front wheel bearings
You normally just check the bearings when you do the brakes. Then you clean and repack them. If you get front wheel looseness or noise, then you jack it up and check for bearing play, or hear grinding.
Q:what are some good trucks for my skateboard? and what are a good brand of wheels and bearings for my skateboard too?~Thanks~
bearings-bones reds, fast and they last a long time too trucks- i usually buy ventures but they're pretty heavy for the wheels,ricta, and find a wheel size thats perfect for you i always buy 53's

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