CYLINDRICAL ROLLER BEARINGS

Cylindrical Roller Bearings

The cylindrical roller is in line contact with the raceway, and the radial load capacity is large. It is not only suitable for bearing heavy load and impact load, but also suitable for high-speed rotation. CRB raceways and rolling element geometric shapes have been improved and designed to have higher load-bearing capacity. The new structural design of ribs and roller end faces not only improves the axial load-bearing capacity of the bearing, but also improves the roller end faces. The lubrication condition of the contact area with the rib improves the performance of the bearing. This type of bearing is mainly used in medium and large motors, generators, internal combustion engines, gas turbines, machine tool spindles, reduction gears, loading and unloading handling machinery, and various industrial machinery.

Product category

The Cylindrical Roller Bearings currently produced by ZWZ can be roughly divided into the following structural types：

Single Row Cylindrical Roller Bearings

Single Row Full Complement Cylindrical Roller Bearings

Double Row Cylindrical Roller Bearings

Double Row Full Complement Cylindrical Roller Bearings

Four Row Sealed Full Complement Cylindrical Roller Bearings

Four Row Cylindrical Roller Bearings

Sendzimir Bearings

Rolling Bearings

Split Cylindrical Roller Bearings

Insulated Cylindrical Roller Bearings

• Single Row Cylindrical Roller Bearings
• Single Row Full Complement Cylindrical Roller Bearings
• Double Row Cylindrical Roller Bearings
• Double Row Full Complement Cylindrical Roller Bearings
• Four Row Sealed Full Complement Cylindrical Roller Bearings
• Four Row Cylindrical Roller Bearings
• Sendzimir Bearings
• Rolling Bearings
• Split Cylindrical Roller Bearings
• Insulated Cylindrical Roller Bearings

Tolerance

ZWZ produces single-row, double-row and four-row CRB with tolerances of up to Class 4, and also produces double-row cylindrical roller bearings with special tolerances of Class SP and UP for machine tool spindles.

Radial internal clearance

The standard products of ZWZ single-row CRB have basic radial clearance, and also can have 3, 4 groups of clearance.

The standard products of ZWZ double-row CRB have 1 group of clearance, cylindrical bore bearings also can have 2, 3 groups of clearance, and tapered bore bearings also can have 2 groups of clearance.

The standard products of ZWZ four-row CRB have 3 groups of clearance, and other clearance products are also available.

Bearings with radial clearance greater than or less than the standard value can also be produced according to user requirements.

Cage

Single-row CRB mostly use vehicle solid cages, stamping cages, nylon cages, etc. Double-row cylindrical roller bearings mostly use turned brass cage, sometimes can also use nylon cages. Four-row cylindrical roller bearings mainly use turned brass cage, and for larger size, turned solid pillar cages shall be used.

Code description

/C9T  Double-row CRB have different clearances between the two rows of raceways.

D  Split bearing.

DR  Two rows of split bearings are used in pairs.

E  Internal design change with reinforced structure. (The raceway size conforms to the current national standard (reinforced type), and the roller diameter and the length are increased compared with the non-reinforced type.)

FC…ZW  Four-row CRB with single inner ring, double outer rings with double ribs, and two rows of rollers against each other.

J  Pressed sheet-steel cage, with additional number distinction when the material has a change.

JA  Steel plate stamping cage with outer ring guide.

JE  Stamping cage of hardened steel plate after phosphating treatment.

K  Tapered bore bearing, with taper of 1:12.

K30  Tapered bore bearing, with taper of 1:30.

L  Light-alloy solid cage. When there is a change in the cage material, it shall be indicated by an additional number.

LA  Light-alloy solid cage with outer ring guide.

LB  Light-alloy solid cage with inner ring guide.

M  Brass solid cage.

MA  Brass solid cage with outer ring guide.

MB  Brass solid cage with inner ring guide.

N  There is a snap groove on the outer ring of the bearing.

NB  Narrow inner ring bearing.

NB1  Narrow inner ring bearing, with narrow on one side.

NC  Narrow outer ring bearing.

NR  The bearing has a snap groove on the outer ring with a snap ring.

N1  The outer ring of the bearing has a positioning notch.

N2  The outer ring of the bearing has two or more symmetrical positioning notches.

Q  Bronze solid cage, with additional numbers to indicate different materials.

/QR  Combination of four CRB with equal distribution of radial loads.

R  The outer ring of the bearing has a stop rib (flange outer ring).

-RS  One side of the bearing is equipped with a skeleton rubber sealing ring.

-2RS  Bearings with RS seals on both sides.

-RSZ  One side of the bearing is equipped with a skeleton rubber sealing ring (contact type) and the other side is equipped with a dustproof cover.

-RZ  One side of the bearing is equipped with a skeleton rubber sealing ring (non-contact).

-2RZ  Bearings with RZ seals on both sides.

S  Martensite quenching.

VB  Vibrating screen bearing.

W B  Wide inner ring bearing (double-sided width).

W B1  Wide inner ring bearing (one-side width).

W C  Wide outer ring bearing.

X  CRB fully equipped with flat retaining ring rollers.

X1  The outer diameter is non-standard.

X2  The width (height) is non-standard.

X3  The outer diameter and width (height) are non-standard (standard inner diameter).

-Z  Bearing with shield on one side .

-2Z  Bearing with shield on both sides.

3D graphics

2D graphics