Bearings, units and housings -- Roller bearings -- Cylindrical roller bearings -- Double row cylindrical roller bearings -- Cylindrical roller bearings, double row SKF NNU 4188 K30M/W33

NNU 4188 K30M/W33

Design

Design variant/feature

NNU K30/W33

Dimensions

d		440	mm
D		720	mm
B		280	mm
D₁	≈	638	mm
F		511	mm
b		22.3	mm
K		12	mm
r_1,2	min.	6	mm
s	max.	10.8	mm

Tapered bore, taper 1:30

Abutment dimensions

d_a	min.	466	mm
d_a	max.	500	mm
D_a	max.	694	mm
r_a	max.	5	mm

Calculation data

Basic dynamic load rating	C	5720	kN
Basic static load rating	C₀	11800	kN
Fatigue load limit	P_u	900	kN
Reference speed		700	r/min
Limiting speed		900	r/min
Calculation factor	k_r	0.34

Mass

Mass bearing

450

Model Number: NNU 4188 K30M/W33
Inner Diameter：440mm Outer Diameter：720mm Width：280mm
Reference speed:900 r/min Limiting speed:700 r/min
Type：Bearings, units and housings Roller bearings Cylindrical roller bearings Double row cylindrical roller bearings
Details： Double row cylindrical roller bearings Cylindrical roller bearings, double row
Update date：2026-04-16
Application:ventilation fans,Safety protection,stamping die and its equipment,equipment,chemical,textile machinery,other mold,garbage disposal,hydraulic pressure gauge,water protection,Forging machine
Similar models:NNU 4188 K30M/W33 AOH 24188 C 4188 MB NNU 4188 M/W33 24188 ECA/W33 BD-C 4188 K30MB-AOH 24188 C 4188 K30MB 24188 ECAK30/W33
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Model No.	Inner Diameter	Outer Diameter	Width	Type
23976 CCK/W33	380	520	106	Bearings, units and housings
307238	400	600	90	Bearings, units and housings
313038 A	399.93	590	-	Bearings, units and housings
470691	670	-	-	Seals
6012/HR22T2	60	95	18	Bearings, units and housings
6219-2Z/VA228	95	170	32	Bearings, units and housings
630x670x20 HDS1 V	630	670	20	Seals
FYR 2 3/16	55.5625	-	-	Bearings, units and housings
K 60x68x20	60	68	20	Bearings, units and housings
KMFE 17	19	-	85	Bearings, units and housings
NNU 4176 M	380	620	243	Bearings, units and housings
W 34	171.8056	230.2002	-	Bearings, units and housings

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Hot number： 240/600 BC 593047 623/HR11QN 7022 ACE/HCP4AL1 C 30/950 MB FY 20 TF FYTB 7/8 FM HE 2319 IR 42x47x20 IR 70x80x25 NA 4919 OKF 620 OKTC 625 PCM 105110115 M PFT 62