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Supporting Roller and Curve Roller bearings:
The supporting roller has the thick-wall outer ring, by which the roller can be rolled directly at the rollway
and withstand the large load. The supporting rollers made by our company include STO RSTO, NA222RS,
RN222RS, NATR NARTPP, NATV NATVPP,NUTR NAST. Supporting Roller.
The curve roller is composed of a bolt, thrust collar, outer ring, needle and cage assembly or full complement rolling body. It has the thick-wall outer ring with camber outside face, withstanding the high radial force.
The curve rollers made by our company include KR, KRE, KRV, KRVE, NUKR and NUKRE. Model KRPP,
KREPP, KRVPP, KRVEPP, NUKRPP cure roller
Model STO and RSTO support roller:
As for Model STO supporting roller needle bearing with inner ring and without shoulder, the outer ring of
bearing is roller type with compact structure and thick wall. It can withstand large stock force in rotation with
high abrasion-resistance. Because of no shoulder in the bearing, inner ring, needle, cage assembly and outer
ring can be mounted respectively.
If the surface of outer ring is cylinder face, the designation of bearing is STOX.
As for Model RSTO supporting roller needle bearing without inner and shoulder, the bearing has no inner
ring, so it is requested that the surface hardness and surface of shaft journal fitted with it be matched with
bearing. The performance of this bearing is same as that of Model STO.
If the surface of outer ring is cylinder face, the designation of bearing is RSTO2. As for Model STO supporting roller needle bearing with inner ring and without shoulder, the outer ring of bearing is roller type with
compact structure and thick wall. It can withstand large stock force in rotation with high abrasion-resistance.
Because of no shoulder in the bearing, inner ring, needle, cage assembly and outer ring can be mounted
respectively.
If the surface of outer ring is cylinder face, the designation of bearing is STOX. (Model STO and RSTO
support roller).
As for Model RSTO supporting roller needle bearing without inner and shoulder, the bearing has no inner
ring, so it is requested that the surface hardness and surface of shaft journal fitted with it be matched with
bearing. The performance of this bearing is same as that of Model STO.
If the surface of outer ring is cylinder face, the designation of bearing is RSTOX
Model RNA222RS, NA222RS Supporting Roller :
Double-seal Roller Needle Bearing without Inner Ring Model RN2RS
Model RNA2RS roller needle bearing has not inner ring and is equipped with double seal rings in both
sides. It has a good dust-protection performance. Since the bearing has no inner ring, it is requested that the
surface hardness and surface of shaft journal fitted with it be matched with bearing. The performance of this
bearing is same as that of Model NA222RS.
If the surface of outer ring is cylinder face, the designation of bearing is RNA222RSX.
Double-seal Roller Needle Bearing with inner ring and without shoulder Model NA2RS
Model NA2RS roller needle bearing has not inner ring and shoulder and is equipped with double seal
rings in both sides. It has a good dust-protection performance. Since the outer ring is roller type with thick wall,
it has a better shock resistance.
If the surface of outer ring is cylinder face, the designation of bearing is NA222RSX.
Supporting Roller Bearing:
Model NATR, NATRPP Supporting Roller Bering
Model NATV, NATVPP Supporting Roller Bering
Model NATR supporting roller bearing includes outer ring, inner ring, needle cage assembly and baffle ring
pressed and fixed in both sides of inner ring. Model NATRPP support roller bearing has the seal ring. It has
a large grease-storage space and can be used for a long time without adding lubricating grease.
The structure of Model NATV supporting roller bearing is same as that of Model NATR. Model NATV is the
bearing with full of needles. It can withstand heavy load under the low speed. However it is necessary to add the
lubricating grease at regular intervals. Model NATVPP supporting roller needle bearing has the seal ring
structure.
If the surface of outer ring is cylinder face, the letter X shall be added after designation of bearing.
Model NUTR Supporting Roller:
Model NUTR supporting roller is the double-row roller bearing with full of needles. The outer ring is guided
by shoulder. All parts of bearing is enclosed by the seal cover pressed in outer ring to form a complete unit. The
seal cover and thrust baffle ring constitute the high-efficient gas seal. This kind of Model NUTR supporting roller
needle bearing can withstand heavy load. Because of axial guide in rolling body, it can withstand the stock axial
load even in the high speed.
If the surface of outer ring is cylinder face, the designation of bearing is NUYTX.
Model NAST Supporting Roller :
This bearing has the axial guide.Its performance is same as that of Model NATR bearing.
Model NAST22 is the roller needle bearing with flat baffle ring and dust-protection cover.
Curve Roller:
Model KR, KR PP Curve Roller
In Model KR, KRPP curve roller, the rolling body is guided by cage and the outer is axially guided by the
baffle ring on the bolt. It is suitable for heavy load and middle rotational speed. Since the bearing has a large
grease-storage space, it has a long-term lubrication cycle. Model KR PP curve roller has the contact-type
seal structure.
Model KRV, KRV PP Curve Roller:
The structure of Model KRV, KRVPP curve roller bearing is same with that of Model KR, KRPP curve
roller bearing. Model KRV, KRV PP curve roller bearing is the full complement needle roller bearing. This
cure roller bearing can withstand heavy load under the low speed. However it is necessary to add the lubricating grease at regular intervals.
Model NUKR Cure Roller
Model NUKR cure roller bearing has the double-row roller structure. As same as parallel roller bearing, the
outer ring is guided axially by rolling body. The cover pressed in outer ring and the shoulder constitutes the
high-efficient gas seal.
This kind of cure roller bearing can withstand the heavy load and the shock axial load because it is guided axially by roller.
KRE KRE PP Model KREVKREV PP NUKRE Curve Roller:
Model KRE, KRE PP, KREV, KREV PP and NUKRE curve roller bearings are the special-purposed
bearings in order to meet the supporting requirement of main machine. The outer ring has roller structure and
the bolt shaft substitutes the inner ring. It has compact structure and can be equipped with eccentric-strap. The
roller can be adjusted by means of the slot at end of bolt. The lubricating grease can be fed from both ends of
bolt.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| 54409U NACHI | 45 | 100 | 72 |
| 54309U NACHI | 45 | 85 | 52 |