Cylindrical Roller Bearings

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Bearings Name	New Model	Old Model:	ID(mm)	OD(mm)	Width(mm)	Cr(kN)	Cor(kN)	Grease Lubrication Speed(r/min)	Oil Lubrication Speed(r/min)	Weight(kg)
20TP104 Thrust Cylindrical Roller Bearings	20TP104	20TP104	20	35	15	-	-	-	-	0.2
89306 Thrust Cylindrical Roller Bearings	89306	-	30	60	18	69	197	-	5000	0.24
89307 Thrust Cylindrical Roller Bearings	89307	-	35	68	20	80	237	-	4600	0.34
87408 Thrust Cylindrical Roller Bearings	87408	-	40	90	23	135	480	-	3600	0.747
89309 Thrust Cylindrical Roller Bearings	89309	-	45	85	24	139	445	-	3600	0.615
87409 Thrust Cylindrical Roller Bearings	87409	-	45	100	25	154	560	-	3200	1.054
89310 Thrust Cylindrical Roller Bearings	89310	-	50	95	27	167	560	-	3200	0.887
87410 Thrust Cylindrical Roller Bearings	87410	-	50	110	27	200	740	-	2900	1.316
89410 Thrust Cylindrical Roller Bearings	89410	-	50	110	36	295	900	-	3000	1.316
89410X Thrust Cylindrical Roller Bearings	89410X	-	50	110	31	295	900	-	3000	1.125
89311 Thrust Cylindrical Roller Bearings	89311	-	55	105	30	184	600	-	2900	1.18
87411 Thrust Cylindrical Roller Bearings	87411	-	55	120	29	222	870	-	2600	1.698
89312 Thrust Cylindrical Roller Bearings	89312	-	60	110	30	196	670	-	2700	1.26
87412 Thrust Cylindrical Roller Bearings	87412	-	60	130	32	260	1000	-	2500	2.26
89412 Thrust Cylindrical Roller Bearings	89412	-	60	130	42	390	1220	-	2500	2.818
81213` Thrust Cylindrical Roller Bearings	81213`	-	65	100	27	177	500	-	2900	0.721
89313 Thrust Cylindrical Roller Bearings	89313	-	65	115	30	194	670	-	2600	1.33
89413 Thrust Cylindrical Roller Bearings	89413	-	65	140	45	445	1410	-	2300	3.52
87413 Thrust Cylindrical Roller Bearings	87413	-	65	140	34	300	1140	-	2300	2.75
81241 Thrust Cylindrical Roller Bearings	81241	-	70	105	27	187	550	-	2700	0.768

Cylindrical roller bearings (CRBs) have a simple structure with their cylindrical rollers in linear contact with the raceways. They offer high load capacity under primarily radial loads. Low friction between the rollers and ring ribs makes these bearings suited for high speed rotation.

Single-row bearings are designated as NU, NJ, NUP, N, or NF, while double-row bearings are designated as NNU or NN, depending on if side ribs are used. All types allow the inner and outer rings to be separated.

Some cylindrical roller bearings used as free-end bearings have no ribs so that the rings can move axially relative to each other. When the inner or outer ring has ribs on both sides and the other ring has a rib on one side, these bearings can take some axial load in one direction.

Double-row cylindrical roller bearings have high radial rigidity and are used primarily for the main shafts of precision machine tools. Cages are typically made of pressed steel or machined brass, but molded polyamide resin cages are used for some models.

ZZ Bearing Company offers a wide variety of cylindrical roller bearings to suit your needs

Cylindrical Roller Bearing Types
NU, N, NNU, NN: Suitable as free-end bearings.
NJ, NF: Can sustain limited axial loads in one direction.
NH, NUP: Suitable as fixed-end bearings. NH types are comprised of a NJ-type CRB with a HJ-type L-shaped thrust collar.

Cylindrical Roller Bearings are bearing in which cylinders are used as the rolling elements as opposed to balls in ball bearings. As such, the rollers have a greater (linear) contact area with the outer ring and are distribute loads across a broader surface. Subsequently, they have a relatively high radial load capacity and are suitable for high speeds. Double-row cylindrical roller bearings have high radial rigidity and are used primarily for precision machine tools.

Depending on the series as defined below a number of cylindrical roller bearings have no ribs on either the inner or outer ring, so the rings can move axially relative to each other which can be used as free-end bearings.

Pressed steel (with or without tins or fins) or machined brass cages are generally used, but sometimes molded polyamide cages are also available depending on the application. Cylindrical Roller Bearings are also available without cages with a full complement of rollers. This allows even higher loads but at the expense of speed.

Single row cylindrical roller bearings are also manufactured with snap ring grooves on the outer rings. This design simplifies the bearing joint as the bearings are located into the housing by means of the snap rings. The snap ring groove and snap rings are in accordance with IS0 464.