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Roller Followers - Non Separate (C-NARTU20)

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Economy
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[Product Specifications]Material: equivalent to SUJ2, r dimension: 0.6, basic dynamic constant load C: 6.9 kN, basic static constant load Co: 8.8 kN, track load capacity 2.19 kN, limit rotational speed: 4,500 rpm, RoHS10 compliant: non-compliant

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C-NARTU20

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Economy Roller Followers

SUJ2 EquivalentHigh Load CapacityNon-Separable Design

- Constructed from high-quality SUJ2 equivalent steel, ensuring durability and long-term performance even in demanding environments.

- Designed to support substantial dynamic and static loads, with specified maximum capacities.

- The non-separable type is ideal for applications requiring a robust, maintenance-free solution with consistent performance.

- High-speed roller bearing

- Standardized dimensions and load capacities ensure precise performance and compatibility with various engineering designs.

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Product Variety

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Product Overview

The roller follower is a compact, highly rigid bearing system. It can be used as a guide roller for cam disks and linear motion.
Since its outer ring rotates while being in direct contact with the mating surface, it is designed to withstand impact loads.
In addition, the outer ring is equipped with precision needle rollers (standard type) with a cage, providing excellent rotational performance and enabling high-speed rotation.
Roller followers are divided into two types: separable type (the inner ring, outer ring, and retaining ring can be separated) and non-separable type (the retaining ring is pressed onto the inner ring and cannot be separated).
The outer surface shape of the outer ring is available in arc type and cylindrical type. The arc-shaped outer ring easily absorbs shaft center deformation and helps reduce offset loads.
These products have a wide range of applications, such as cam mechanisms in automatic and special-purpose machine tools, various handling devices, transfer devices, bookbinding machines, tool changers in machining centers, pallet changers, automatic painting machines, and sliding forklifts in automated warehouses, among others.

Note: The packaging method for some models has changed. For d size ≤ 10, box packaging has been changed to bag packaging; for d size ≥ 12, blue box packaging has been changed to white box packaging. During the transition period, mixed shipments may occur, but this does not affect usage.

Dimensional Drawing

For non-separable roller followers, please refer to the table below (same as the specification table) for selection:

Application	Arc type		Material
Application	With seal	Without seal	Material
Standard type	C-NARTU	C-NARTR	Equivalent to SUJ2
Standard type	E-NARTUS	E-NARTRS	Equivalent to SUS440C
High load type	C-NARTV	—	Equivalent to SUJ2
High load type	E-NARTVS	E-NARTRVS	Equivalent to SUS440C

Outer diameter tolerance 0 to -0.05 mm

Types of materials
This series is available in both bearing steel and stainless steel.
Compared to bearing steel, stainless steel has stronger rust resistance and is suitable for clean rooms and other environments where oil contamination must be avoided.

Specification Table

■ With seal ring, bearing steel type

Type			Roller Outer Diameter D	a	Roller Width B	B₁	r	Basic Rated Load				Rail Load Capacity	Maximum speed (rpm)		Weight (g)
Type								C (dynamic) kN		Cor (static) kN		Rail Load Capacity	Maximum speed (rpm)		Weight (g)
Type	Roller inner diameter d	Inner diameter tolerance						Standard type	High load type	Standard type	High load type	(kN)	Standard type	High load type	Standard type	High load type
C-NARTU C-NARTV	5	0 -0.008	16	12.5	11	12	0.15	3.15	4.9	3.3	6.5	0.86	14000	3800	14.5	15.1
	6		19	15	11	12	0.15	3.5	5.4	3.9	7.9	1.1	11000	3100	20.5	21.5
	8		24	19	14	15	0.3	5.5	7.8	6.4	11.4	1.49	7500	2500	41.5	42.5
	10		30	23			0.6	6.8	9.5	8.4	14.6	1.96	5500	2100	64.5	66.5
	12		32	25				6.9	9.7	8.8	15.4	2.19	4500	1800	71	73
	15		35	27.6	18	19		9.8	12.8	14.1	23	2.51	3600	1600	102	106
	17		40	31.5	20	21	1	10.9	14.8	15.5	26.5	2.98	2900	1400	149	155
	20	0 -0.01	47	36.5	24	25	1	15.5	20.6	25.5	42	5.72	3000	2400	250	255

■ With seal ring, stainless steel type

Type			Roller Outer Diameter D	a	Roller Width B	B₁	r	Basic Rated Load				Rail Load Capacity	Maximum speed (rpm)		Weight (g)
Type								C (dynamic) kN		Cor (static) kN		Rail Load Capacity	Maximum speed (rpm)		Weight (g)
Type	Roller inner diameter d	Inner diameter tolerance						Standard type	High load type	Standard type	High load type	(kN)	Standard type	High load type	Standard type	High load type
E-NARTUS E-NARTVS	5	0 -0.008	16	12	11	12	0.15	2.66	3.92	2.74	6.14	0.86	14000	4760	14.5	15.1
	6		19	14	11	12	0.15	3.09	4.32	3.46	7.58	1.1	11200	3920	20.5	21.5
	8		24	17.5	14	15	0.3	4.86	6.24	5.37	11.48	1.49	9520	3080	41.5	42.5
	10		30	23.5			0.6	6.33	7.6	6.1	13.32	1.96	8400	2800	64.5	66.5
	12		32	25				6.7	7.76	6.77	15.09	2.19	7280	2520	71	73

■ Non-sealed type, bearing steel type

Type			Roller Outer Diameter D	a	Roller Width B	B₁	r	Basic Rated Load		Track	Limit	Weight (g)
Type	Roller inner diameter d	Inner diameter tolerance	Roller Outer Diameter D	a	Roller Width B	B₁	r	C (dynamic) kN	Cor (static) kN	Load capacity (kN)	Speed (rpm)	Weight (g)
C-NARTR	5	0 -0.008	16	12.5	11	12	0.15	3.15	3.3	0.86	20000	15
	6		19	15	11	12	0.15	3.5	3.9	1.1	16000	21
	8		24	19	14	15	0.3	5.5	6.4	1.49	13600	42
	10		30	23			0.6	6.8	8.4	1.96	12000	66
	12		32	25			0.6	6.9	8.8	2.19	4500	73

■ Non-sealed type, stainless steel type

Type			Roller Outer Diameter D	a	Roller Width B	B₁	r	Basic Rated Load				Rail Load Capacity	Maximum speed (rpm)		Weight (g)
Type								C (dynamic) kN		Cor (static) kN		Rail Load Capacity	Maximum speed (rpm)		Weight (g)
Type	Roller inner diameter d	Inner diameter tolerance						Standard type	High load type	Standard type	High load type	(kN)	Standard type	High load type	Standard type	High load type
E-NARTRS E-NARTRVS	5	0 -0.008	16	12	11	12	0.15	2.66	4.9	2.74	6.14	0.86	20000	6800	14.5	15.1
	6		19	14	11	12	0.15	3.09	5.4	3.46	7.58	1.1	16000	5600	20.5	21.5
	8		24	17.5	14	15	0.3	4.86	7.8	5.37	11.48	1.49	13600	4400	41.5	42.5
	10		30	23.5			0.6	6.33	9.5	6.1	13.32	1.96	12000	4000	64.5	66.5
	12		32	25				6.7	9.7	6.77	15.09	2.19	4500	1800	71	73

kgf = N × 0.101972

Usage Method

The structure of the roller follower is designed to withstand radial loads. When subjected to axial loads, the side plate and outer ring may become detached or damaged. Therefore, during design and installation, it is important to minimize the occurrence of axial residual force.
As shown in diagram (1), non-separable roller followers are suitable for this scenario, while in diagram (2), separable roller followers are appropriate.

Note: When the side plate of a non-separable roller follower is subjected to axial force, it may shift or fall off. Please refer to the above diagram and select the appropriate model according to the application scenario.

■ Installation
When installing, make sure that the inner ring oil hole is not positioned in the load area; otherwise, it may shorten the service life to some extent.

■ Track load capacity
Track load capacity refers to the allowable load that the roller follower's outer ring can continuously withstand over a long period when in contact with the mating rail, without causing deformation or indentation of the rail.
The track load capacity listed in the parameter table is the value when steel with an applicable strength of 1.2 kN/mm² is used as the mating material. Therefore, when the hardness of the mating rail is not 40 HRC, the corresponding coefficient in the table below should be multiplied to obtain the correct allowable track load.

■ Dust Protection and Lubrication
1. The lubrication interval depends on operating conditions. As a general guideline, for standard types, replenish grease every 6 months to 2 years; for high-load types, replenish grease every 1 month to 6 months.
2. Even for products equipped with seals, excess grease may leak out during the initial operation phase or after replenishing the grease. If you wish to prevent grease from contaminating the area around the equipment, you can perform a trial run in advance and then wipe off any leaked excess grease.
3. As the usage time increases, the properties of the grease deteriorate and its lubricating performance decreases, so it is necessary to inspect and replenish the grease according to the frequency of use.

Precautions

1. Do not disassemble any parts, as this may cause functional damage.
2. Do not drop or strike the roller follower. Otherwise, this may cause scratches or damage. Additionally, even if there is no visible damage after an impact, functional damage may still occur.

Part Number

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*In order to open the CAD Data download and 3D preview screen, the part number must be fixed.
Please confirm the part number from "Specification / Dimension"on the left side, and then perform the CAD Data Download / 3D Preview operation.

CAD Download

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Part Number
C-NARTU20

Part Number	Standard Unit Price	Minimum order quantity	Volume Discount	Days to Ship	Outer Dia. D (mm)	Width B (mm)	Roller Type	Roller Follower Inner Dia. D (mm)	Material	Size Standards	Roller Guiding Method	Basic Load Rating Cr (Dynamic) (kN)	Basic Load Rating Cor (Static) (kN)	Allowable Rotational Speed (rpm)	Seal
	MYR 36.72	1 Piece(s)	Available	4 Day(s) or more	47	24	[Spherical Outer Ring] Crowned Type	20	[Carbon Steel] SUJ2 Equivalent	[Metric] Metric System	With Retainer	15.5	25.5	3000	Provided

Product TOP

Basic Information

Product Category	Roller Followers	Roller Follower Type	Solid	Roller Lining	Not Provided
Shaft	Not Provided	Inner Ring	Provided

Please check the type/dimensions/specifications of the part C-NARTU20 in the Roller Followers - Non Separate series.

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1 Part Numbers

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Configure Remaining Specifications

Completed

Specification/Dimensions

type
- C-NARTR
- C-NARTU
- C-NARTV
- E-NARTRS
- E-NARTRVS
- E-NARTUS
- E-NARTVS
Clear
Outer Dia. D(mm)
16

19

24

30

32

35

40

47
Clear
Width B(mm)
11

14

18

20

24
Clear
Roller Type
- Spherical Outer Ring
  - Crowned Type
  - High Load Crowned Type
Clear
Roller Follower Inner Dia. D(mm)
5

6

8

10

12

15

17

20
Clear
Material
- Carbon Steel
  - SUJ2 Equivalent
- Stainless Steel
  - SUS440C Equivalent
Clear
Size Standards
- Metric
  - Metric System
  - Metric System
Clear
Roller Guiding Method
- With Retainer
- Full rollers
Clear
Allowable Rotational Speed(rpm)
1400

1600

1800

2100

2400

2500

2520

2800

2900

3000

3080

3100

3600

3800

3920

4000

4400

4500

4760

5500

5600

6800

7280

7500

8400

9520

11000

11200

12000

13600

14000

16000

20000
Clear
Seal
- Not Provided
- Provided
Clear
CAD
- 2D
- 3D
Clear

Days to Ship

All

1 Day(s) or Less

4 Day(s) or Less

6 Day(s) or Less
Clear

Specify Alterations

The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .

Frequently asked question (FAQ)

Question: What material is used for this series of products? Also, is there any surface treatment?: Answer: The material used in this series of products is equivalent to SUJ2, and there is no surface treatment.
Question: What parameters should attention be paid to when selecting a product?: Answer: When purchasing products, you need to choose according to your own installation and use requirements, referring to the specification table.
The parameters that need special attention are: inner diameter, outer diameter, basic rated load, rotational speed limit, etc.
Question: Why does the side plate of the non-separable roller cam follower always fall off? Is it a defective product?: Answer: First of all, the side plate of the non-separable roller cam follower is pressed onto the inner ring and is not integrated with the inner ring. Therefore, it is easy to come off when subjected to axial force. Roller cam followers are designed to withstand radial force, so axial force should be avoided as much as possible in the initial design. In addition, it is important to distinguish between the application scenarios of the separable and non-separable types and select the correct model accordingly.

Products like this...

Part Number
C-NARTR6
C-NARTR8
C-NARTU10
C-NARTU5
C-NARTU6
C-NARTU8

Standard Unit Price	Minimum order quantity	Volume Discount	Days to Ship	Outer Dia. D (mm)	Width B (mm)	Roller Type	Roller Follower Inner Dia. D (mm)	Material	Size Standards	Roller Guiding Method	Basic Load Rating Cr (Dynamic) (kN)	Basic Load Rating Cor (Static) (kN)	Allowable Rotational Speed (rpm)	Seal
MYR 16.43	1 Piece(s)	Available	1 Day(s)	19	11	[Spherical Outer Ring] Crowned Type	6	[Carbon Steel] SUJ2 Equivalent	[Metric] Metric System	With Retainer	3.5	3.9	11000	Not Provided
MYR 19.85	1 Piece(s)	Available	1 Day(s)	24	14	[Spherical Outer Ring] Crowned Type	8	[Carbon Steel] SUJ2 Equivalent	[Metric] Metric System	With Retainer	5.5	6.4	7500	Not Provided
MYR 21.62	1 Piece(s)	Available	1 Day(s)	30	14	[Spherical Outer Ring] Crowned Type	10	[Carbon Steel] SUJ2 Equivalent	[Metric] Metric System	With Retainer	6.8	8.4	5500	Provided
MYR 18.14	1 Piece(s)	Available	1 Day(s)	16	11	[Spherical Outer Ring] Crowned Type	5	[Carbon Steel] SUJ2 Equivalent	[Metric] Metric System	With Retainer	3.15	3.3	14000	Provided
MYR 19.23	1 Piece(s)	Available	1 Day(s)	19	11	[Spherical Outer Ring] Crowned Type	6	[Carbon Steel] SUJ2 Equivalent	[Metric] Metric System	With Retainer	3.5	3.9	11000	Provided
MYR 20.73	1 Piece(s)	Available	1 Day(s)	24	14	[Spherical Outer Ring] Crowned Type	8	[Carbon Steel] SUJ2 Equivalent	[Metric] Metric System	With Retainer	5.5	6.4	7500	Provided

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Roller Followers - Non Separate (C-NARTU20)

Economy Roller Followers

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