HK 3214 Needle Bearing HK Series High Precision

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1000000 set/month

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Product Description:

Product Specifications:



Brand Name:


Bore Size:

32 mm

Outside Diameter:

39 mm

Model Number:

HK 3214

Precision Rating:


Seals Type:

Open or Sealed

Number of Row:

Single Row

Place of Origin:

Jiangsu, China (Mainland)


Chrome Steel


Grease Lubrication


Plastic Bag and Box


HK 3214

Needle bearing series

Drawn cup needle 

HK Series  

roller bearings

BK Series 

Inch Series

Sealed drawn cup 

HK...RS Series  

needle roller bearings

HK...2RS Series 

BK...RS Series

Drawn cup full component 

F Series 

needle roller bearings

FH series  

MF Series  

MFH Series 

FY Series

Drawn cup roller clutches/

HF Series  

clutch and bearing assemblies

HFL Series

Radial needle roller and cage assemblies

K Series 

K...ZW Series

Radial needle and cage assemblies

KZK Series  

for pin connecting rod

KBK Series

Heavy duty needle roller bearings

NK Series 

NKS Series 

RNA49 Series 

RNA69 Series 

NKI Series 

NKIS Series

NA49 NA69 NA48 NAO RNAO series

Sealed heavy duty needle rollers bearings

RNA49...RS/2RS   NA49...RS/2RS

Full components needle roller bearings

RNAV series

RNV Series

Self-aligning needle roller bearings

RPNA/PNA  Series

IR/LR Series  

IXK Series

Our Advantages:

1. Provide full range of standard bearings.

2.Look into and develop various non-standard bearing according to customers’ special needs.

3.Eager to control quality and ensure quality for bearings.

4. Multi-channel sales modes: e-commerce, regular domestic and foreign exhibitors.

5.Perfect logistics modes: sea, air & international express.

6.High quality post-sales service: find solutions to fulfill your needs in time.

Application Area:

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

HK 3214 needle roller bearings are widely used in cars, compressors, construction, electric motors, food industry, home appliances etc. As a rolling element, it turns the world.

HK 3214 Needle Bearing HK Series High Precision

Packaging & Delivery

Packaging Details:

1.industrial packing 
4.according to your requirements

Delivery Detail:

in stock or 15-30days after P.O



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 3214 Needle Bearing HK Series High Precision

HK 3214 Needle Bearing HK Series High Precision

HK 3214 Needle Bearing HK Series High Precision

HK 3214 Needle Bearing HK Series High Precision

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Q:What is the bearing capacity of needle bearing and copper sleeve?
The bearing capacity of plain bearings with copper sleeve is large. However, the speed of the shaft has a certain requirement, the speed is too low, too high, can not establish oil film, will soon wear.
Q:Will these bearings fit in these wheels?
all bearings are universally sized. any longboard bearings you get will fit the wheels fine
Q:how do i check the main bearings? on my chevy?
At least, the oil pan must be removed and you will need a feeler gage to check the gap.
Q:Needle roller bearings are how to process the needle, so smooth finish?
The process of needle: blank forming, deburring, heat treatment, coarse and fine grinding, end rolling surface, super finishing rolling surface polishing or sawdust.For flat head or taper head needle roller, such as blank forming, it is difficult to guarantee the length and size tolerance, and the grinding double end process can be increased. If the convex generatrix rolling surface is needed, it can be carried out directly in the process of super finishing, rolling or channeling.Needle roller bearing (needlebearing) is a roller bearing with cylindrical roller, relative to its diameter, the roller is thin and long. This roller is called needle roller. Although it has a small section, the load bearing capacity of the bearing is still high, with thin and long needle bearing roller (roller diameter of D = 5mm, L/D = 2.5, L roller length), so the radial structure is compact, the minimum diameter of the diameter and load capacity and other types of bearings, bearing the same, especially for the radial installation size limited. According to the use of different occasions, can choose the inner ring of the bearing or needle roller and cage assembly, the shaft neck surface and the surface of shell holes matched with a bearing directly as the bearing inner and outer rolling surface, in order to ensure the load capacity and operating performance and have the same ring bearing, shaft or housing bore raceway surface hardness the machining precision and the surface quality of bearing ring raceway and similar. This kind of bearing can only bear radial load. The needle roller bearing for stamping outer ring is needle roller bearing with thin stamping forming outer ring.
Q:its a question for skateboarders about miniramps and bearings?
Don't get slow bearings, just work around the miniramp problem. Either rock over the coping to get rid of that momentum, or pivot turn on your way down. By the way, fast bearings=good bearings=less replacements=more $$ Either find a way to lose momentum or find a bigger ramp
Q:what is the advantage and disadvantage of water-lubricated bearings?
The main advantage of a water cooled bearing is you can use the a portion of the water from the pump discharge to lube the bearings. That way you can always be assured of the lubricating fluid supply and do not have to relay on another pump. Some pumps do use another source, especially if the water being pumped is dirty, but it is still cheap and non-contaminating if some leaks into the pumped fluid. However, water is not always a good lube especially on pumps with high speeds and/or mechanical loads. Water is not very viscous and becomes less so with increased temperature. Even small 3600 rpm pumps will use oil for lubrication. Some large, high pressure pumps will have their own oil pumping and cooling system for the bearings.
Q:two bearings in skateboard?
Q:ball bearings for a mousetrap car?
Ball Bearing Mouse Trap
Q:Do I need new skate wheel bearings?
buying new bearings will be the best option. Giving it some oil would be a temporary fix, but later on you will find it does not help anymore. Get some new ones and you will be gliding ..
Q:Is it possible to use rollerblading bearings in aggresive in-line skates?
Rollerblading is just a slang term for inline skating. There are two common sizes of bearings for inline skates and one of them is only popular for inline hockey. You can replace any bearing with another of the same size. If you want to change sizes, you need to replace the wheel, bearings, and bearing spacer at the same time. The 608 bearing is used on almost all skates and skateboards. They are 22mm (7/8 inch) in diameter. The 688 bearings are used in some hockey skates and were used for a short while in speed skates. They are much smaller at 16mm (5/8 inch) diameter.,

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