YDTech® manufacturer of stainless steel needle roller bearings with machined rings(or not), with flanges(or not), with inner ring(or not); supplier of precision needle cage assembly, drawn cup roller bearings in china.

needle roller bearings are bearings with needle rollers that are small in diameter. needle roller bearings include bearings whose rollers slightly exceed the size range of needle rollers. needle roller bearings include drawn cup and solid radial bearings, as well as application specific cam followers, and roller followers. thrust bearings include thrust needle bearings.

drawn cup needle roller bearings with open ends,closed ends.

HK BK series: sealed drawn cup needle roller bearings

HK...RS,HR...2RS,BK...RS series: drawn cup full complement needle roller bearings.

F,FH,MF,MFH,FY,MFY series: drawn cup roller clutches, clutch and bearing assemblies.

HF,HFL series: radial needle roller and cage assemblies.

machined needle roller bearings like needle roller bearings with rings, without rings, aligning needle roller bearings, combined needle roller bearings and inner rings.

needle roller and cage assemblies.

axial needle roller and cage assemblies,axial bearing washer,axial needle roller bearings.

drawn cup roller clutches. yoke type track rollers. stud type track rollers,cam followers.

axial cylindrical roller bearings,axial cylindrical roller and cage assemblies, axial bearing washers

basic code for needle roller bearings

needle roller bearings series

type code	bearing type<	feature sizes	examples
K	radial needle roller and cage assemblies	KXEXB	K10X14X10
ASK	thrust needle roller and cage assemblies	dD	ASK0821
NA	needle roller bearings	48,49,69	NA4800, NA4900, NA6900
HK	drawn cup needle roller bearings open ends	FC	HK3020
BK	drawn cup needle roller bearings, closed ends	FC	BK1212
needle roller bearings series

deformation structure for needle roller bearings

needle roller bearings series

type code	bearing type<	feature sizes	examples
AXK	thrust needle roller bearing with centring flange	D	AXK5070
NK, NKS, NKH	needle roller bearing without inner rings	F/B	NK 12/12
NKS, NKH	needle roller bearing without inner rings	F	NKS20, NKH30
NKI, NKIS, NKIH	single row needle roller bearing with machined rings, with flanges	d/B	NKI 30/30
NKIS, NKIH	single row needle roller bearing with machined rings, with flanges	d	NKIS19, NKIH19
NAO	needle roller bearing with machined rings, without flanges	dXDXB	NAO 20X37X16
NAV	full complement needle roller bearings	40, 48, 49	NAV4000, NAV4800, NAV4900
F-, FH-	drawn cup full complement needle roller bearings, open end	FC	FH-0812, F-0812
MF-, MFH-	drawn cup full complement needle roller bearings, closed end	FC	MFH-0812, MFH-0812
FY-, FYH-	drawn cup full complement needle roller bearings, open end	FC	FY-0812, FYH-0812
MFY-, MFYH-	drawn cup full complement needle roller bearings, closed end	FC	MFY-0812, MFYH-0812
needle roller bearings series

K,K...ZW,K...D,K...ZWD series: long cylindrical roller and cage assemblies

KNL series: radial needle roller and cage assemblies for pin of connecting rod.

NK,NKS,RNA49,RNA69 series

needle roller combined bearings series

combined bearings,NKXR NKX, combined needle roller bearings,NKX, NK,combined needle bearings, NKIB, NKIB, ZARN, ZARF,

type code	bearing type<	feature sizes	examples
NKXR	needle roller & thrust cylindrical roller combined bearings	F	NKXR20
NKX	needle roller & thrust ball combined bearings	F	NKX60
NX	needle roller with outer cover & thrust full complement ball combined bearings	F	NX30
NKIA	needle roller & angular contact ball combined bearings	59	NKIA5900
NKIB	needle roller & three-point contact ball combined bearings	59	NKIB5901
ZARN	needle roller & double direction, thrust cylindrical roller, combined bearings	dD	ZARN3060
ZARF	needle roller with flange & double direction, thrust cylindrical roller, combined bearings	dD	ZARF3590
YRT	cylindrical roller with flange & double direction, thrust needle roller, combined bearings	d	YRT150
NAOL	long cylindrical roller bearing	d	NAOL4148
NAL	long cylindrical roller bearing with outer ring & flange	d	NAL100
PNA	self aligning cylindrical roller bearing	d/D	PNA35/55
combined bearings,NKXR NKX, combined needle roller bearings,NKX, NK,combined needle bearings, NKIB, NKIB, ZARN, ZARF,

BR,MR,NCS,BRC series: heavy duty needle roller bearings with inner ring

NKI,NKIS,NA49,NA48,NA69 series: sealed heavy duty needle roller bearings with inner or without inner ring.

RNA49...RS,RNA49...2RS,NA49...RS,NA49...2RS series: heavy duty needle roller bearings with ribs.

RNAO series: aligning heavy duty needle roller bearings with or without inner ring.

RPNA,PNA series: heavy duty full complement needle roller bearings.

support rollers,track rollers,cam followers, needle bearings series

support rollers,STO, NA, track rollers,NATR, NATV, cam followers, KR, KRV,needle bearings NUTR, NUKR

type code	bearing type<	feature sizes	examples
STO	support roller without flange rings	d	STO30
NA	needle roller bearing with machined rings, with flanges	d	NA2200-2RS
NATR	support rollers with flange rings, relubrication feature	d, dD	NATR20
NATV	support rollers,full complement needle roller bearings with flange rings,	d, dD	NATV25
KR	cam follower with bolt shaft, integral sealing and relubrication feature	D,Dd1	KR40
KRV	cam follower with bolt shaft, integral sealing ,full complement needle bearing,	D,Dd1	KRV32 PPX
NUTR	cam follower with bolt shaft, integral sealing ,full complement cylindrical roller bearing,	D,Dd1	NUTR 3072 X
NUKR	cam follower with bolt shaft, integral sealing ,full complement double row cylindrical roller bearing,	D,Dd1	NUKR 90 A
support rollers,STO, NA, track rollers,NATR, NATV, cam followers, KR, KRV,needle bearings NUTR, NUKR

RNAV,NAV series: track roller bearings, yoke type track rollers without axial guidance.

RSTO,STO series: sealed yoke type track rollers without axial guidance.

RNA22...2RS,NA22...2RS series: yoke type track rollers with axial guidance.

NUTR,NATV series: stud type track rollers.

KR,KRV,NUKR series: 4.054,4.055,4.056,4.057,4.058,4.059,WD.063,WD.064.

inner ring, IR, LR Series: axial needle roller and cage assemblies.

AXK, AXW, AX TC, NTB,NTA series: axial needle roller bearings with centring spigot on the bearing washer.

AXW series: axial cylindrical roller and cage assemblies.

K811,K812,K871,K894 series.