Single Row Cylindrical Roller Bearings Without Inner Ring

Single Row Cylindrical Roller Bearings Without Inner Ring

Single row cylindrical roller bearings without an inner ring are another type of rolling element bearing commonly used in various applications. These bearings consist of cylindrical rollers, a cage to retain the rollers, and an outer ring that serves as the raceway for the rollers. Unlike bearings with an inner ring, these bearings do not have a separate inner ring and are designed to be directly mounted onto the shaft.

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Parameter

Part Number	Outer Dia	Width	Construction	Seal Type	Speed (x1krpm)
RNU 202 ECP	35 mm	11 mm	Single Row	Open	26
RNU 203 ECP	40 mm	12 mm	Single Row	Open	22
RNU 2203 ECP	40 mm	16mm	Single Row	Open	22
RNU 203 TN9	40mm	12mm	Single Row	Open	22
RNU 204 ECP	47 mm	14mm	Single Row	Open	19
RNU 204	47 mm	14mm	Single Row	Open	19
RNU 2304 ECP	52 mm	21 mm	Single Row	Open	18
RNU 304	52 mm	15mm	Single Row	Open	18
RNU 205 ECP	52 mm	15mm	Single Row	Open	16
RNU 2205 ECP	52 mm	18mm	Single Row	Open	16
RNU 305	62mm	17mm	Single Row	Open	15
RNU 206 ECP	62 mm	16mm	Single Row	Open	14
RNU 2206 ECP	62 mm	20 mm	Single Row	Open	14
RNU 1007 ECP	62 mm	14mm	Single Row	Open	13
RNU 306	72mm	19mm	Single Row	Open	12
RNU 207 ECJI	72 mm	17mm	Single Row	Open	12
RNU 207 ECP	72 mm	17mm	Single Row	Open	12
RNU 2207 ECJ	72 mm	23mm	Single Row	Open	12
RNU 2207 ECP	72 mm	23mm	Single Row	Open	12
RNU 307 ECP	80mm	21mm	Single Row	Open	11
RNU 208 ECP	80mm	18mm	Single Row	Open	11
RNU 2208 ECJ	80mm	23mm	Single Row	Open	11
RNU 2208 ECP	80mm	23 mm	Single Row	Open	11
RNU 308 ECJ	90 mm	23 mm	Single Row	Open	10
RNU 308 ECP	90mm	23mm	Single Row	Open	10
RNU 1009 ECP	75 mm	16mm	Single Row	Open	11
RNU 209 ECP	85mm	19mm	Single Row	Open	10
RNU 2209 ECP	85mm	23 mm	Single Row	Open	10
RNU 1010 ECP	80mm	16mm	Single Row	Open	10
RNU 309 ECP	100mm	25 mm	Single Row	Open	8
RNU 2210 ECP	90mm	23 mm	Single Row	Open	9
RNU 1011	90mm	18mm	Single Row	Open	9
RNU 310 ECJ	110 mm	27 mm	Single Row	Open	8
RNU 310 ECP	110 mm	27 mm	Single Row	Open	8
RNU 211 ECJ	100mm	21mm	Single Row	Open	8
RNU 211 ECP	100mm	21mm	Single Row	Open	8
RNU 2211 ECPI	100mm	25mm	Single Row	Open	8
RNU 212 ECJ	110mm	22mm	Single Row	Open	8
RNU 212 ECP	110mm	22mm	Single Row	Open	8
RNU 2212 ECP	110 mm	28mm	Single Row	Open	8
RNU 1014 ML	110mm	20 mm	Single Row	Open	11
RNU 1016 ECM	125mm	22mm	Single Row	Open	6
RNU 216 ECP	140 mm	26mm	Single Row	Open	6
RNU 1017 MA	130mm	22 mm	Single Row	Open	8
RNU 2217 ECP	150mm	36mm	Single Row	Open	5
RNU 220 ECJ	180mm	34mm	Single Row	Open	4
RNU 220 ECP	180mm	34mm	Single Row	Open	4
RNU 2319 ECML	200mm	67 mm	Single Row	Open	6
RNU 1024 ML	180mm	28mm	Single Row	Open	6
RNU 226 ECM	230mm	40mm	Single Row	Open	4
RNU 324 ECJ	260mm	55mm	Single Row	Open	3
RNU 1030 ML	225mm	35 mm	Single Row	Open	5
RNU 236 ECMA	320 mm	52mm	Single Row	Open	4
RNU 236 ECML	320 mm	52 mm	Single Row	Open	4

Introduction

Design

Single row: Similar to the version with an inner ring, these bearings have a single set of cylindrical rollers arranged in a single row.

Outer Ring:

The outer ring serves as the raceway for the cylindrical rollers and is usually mounted in a housing.

Cage:

The cage or separator holds the cylindrical rollers in place, preventing direct contact between them and ensuring proper spacing.

Load Capacity:

Single row cylindrical roller bearings without an inner ring are designed to handle radial loads. The load capacity depends on the bearing’s size, design, and material.

Clearance:

Similar to bearings with an inner ring, these bearings may have various internal clearances to accommodate thermal expansion and contraction.

Tolerance and Precision:

Bearings are manufactured with specific tolerances to ensure proper fit and alignment. Precision levels such as P0, P6, or P5 indicate the level of manufacturing precision.

Seals and Shields:

Depending on the application, bearings may have seals or shields to protect against contaminants and retain lubrication.

Applications:

These bearings are commonly used in applications where space constraints or specific design considerations make it preferable to have the bearing mounted directly onto the shaft without a separate inner ring.

Mounting and Dismounting:

Proper mounting and dismounting procedures are crucial to ensure the longevity and performance of the bearing. Care should be taken to avoid causing damage during installation.

Lubrication:

Adequate lubrication is essential for reducing friction and preventing premature wear. The type and amount of lubricant depend on the operating conditions and application requirements.

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Single Row Cylindrical Roller Bearings Without Inner Ring

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