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Roller Followers - Bearing Separable (E-NFASTFZS20)

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Economy
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[Product Specifications]Material: equivalent to SUJ2, r dimension: 0.3, basic dynamic constant load C: 9.0 kN, basic static constant load Co: 10.1 kN, track load capacity 2.19 kN, limit rotational speed: 4,500 rpm, RoHS10 compliant: non-compliant

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Configured Part Number is shown.

E-NFASTFZS20

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Economy Roller Followers

Bearing Separable High Load High Rotational Speed

- Separable Bearing Design: The separable bearing design simplifies maintenance and replacement, increasing the operational efficiency of machinery.

- Capable of handling substantial dynamic and static loads, with specified maximum capacities.

- Designed to support high rotational speeds, up to specified maximum RPM.

- Available with or without seals, providing flexibility depending on the environmental conditions and maintenance preferences.

- Constructed from SUJ2 equivalent steel, ensuring durability and high performance in demanding industrial applications.

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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 ring comes in two shapes: spherical and cylindrical. The spherical outer ring is better at absorbing shaft center deformation, which 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: For some models, the packaging method has changed; for d size ≤ 10, box packaging has been changed to bag packaging. During the transition period, mixed shipments may occur, but this does not affect usage.

Dimensional Drawing

With retaining ring
■ With seal■Without seal
E-NFASTZ E-NFASTFZ C-NASTZ C-NASTFZ

E-NFASTZS E-NFASTFZS E-NASTZS E-NASTFZS

Without retaining ring

C-NASTR C-NASTF

E-NASTRS E-NASTFS

Specification Overview

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

Shape	Type			Material
	With retaining ring		Without retaining ring
	With seal	Without seal	Without retaining ring
Arc type	E-NFASTZ	C-NASTZ	C-NASTR	Equivalent to SUJ2
Arc type	E-NFASTZS	E-NASTZS	E-NASTRS	Equivalent to SUS440C
Cylindrical type	E-NFASTFZ	C-NASTFZ	C-NASTF	Equivalent to SUJ2
Cylindrical type	E-NFASTFZS	E-NASTFZS	E-NASTFS	Equivalent to SUS440C

Material types
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 retaining ring type

Type			Roller Outer Diameter D	a	Roller Width B	B₁	r	Basic Rated Load				Rail Load Capacity (kN)		*Maximum Speed (rpm)	Weight (g)
Type								Bearing Steel		Stainless steel		Rail Load Capacity (kN)
Type	Roller inner diameter d	Inner diameter tolerance						C (dynamic) kN	Cor (static) kN	C (dynamic) kN	Cor (static) kN	Arc type	Cylindrical type
No seal ring C-NASTZ C-NASTFZ E-NASTZS E-NASTFZS With seal ring E-NFASTZ E-NFASTFZ E-NFASTZS E-NFASTFZS	6	0 -0.008	19	15	13.8	14	0.3	3.3	3.64	3.03	3.34	1.1	2.82	16000 (11200)	24.5
	8		24	18	13.8	14	0.6	4.54	4.71	4.18	4.33	1.49	3.61	13600 (9520)	39
	10		30	23	15.8	16	1	7.76	7.74	7.14	7.11	1.96	5.49	12000 (8400)	65
	12		32	25			1	8.32	8.72	7.65	8.02	2.19	5.88	10400 (7280)	75
	15		35	30			1	9.84	11.44	9.05	10.52	2.51	6.43	8000 (5600)	83
	17		40	33	19.8	20	1	13.92	16.72	12.8	15.38	2.98	9.44	7600 (5320)	135
	20	0 -0.01	47	37			1	15.36	19.6	14.13	18.03	3.69	11.04	6800 (4760)	195
	25	0 -0.01	52	43			1	16.56	22.72	15.23	20.9	4.23	12.24	5600 (3920)	225
	30	0 -0.012	62	50.5	24.8	25	1	24.24	36.32	22.3	33.41	5.33	17.68	4400 (3080)	400

C-NASTZ15/17/20/25/30, C-NASTFZ25/30 are temporarily not for sale

*For models with a sealing ring, please refer to the parameters in ()

kgf = N × 0.101972

C-NASTZ and C-NASTFZ products do not come pre-filled with grease; please fill with grease during installation.

■ Without retaining ring type

Type			Roller Outer Diameter D	dr	Roller Width B	B₁	r	Basic Rated Load				Rail Load Capacity (kN)		Maximum speed (rpm)	Weight (g)
Type								Bearing Steel		Stainless steel		Rail Load Capacity (kN)
Type	Roller inner diameter	Inner diameter tolerance						C (dynamic) kN	Cor (static) kN	C (dynamic) kN	Cor (static) kN	Arc type	Cylindrical type
C-NASTR C-NASTF E-NASTRS E-NASTFS	6	0 -0.008	19	10	9.8	10	0.3	3.3	3.64	3.03	3.34	1.1	2.82	16000	24.5
	8		24	12	9.8	10	0.6	4.54	4.71	4.18	4.33	1.49	3.61	13600	39
	10		30	14	11.8	12	1	7.76	7.74	7.14	7.11	1.96	5.49	12000	65
	12		32	16			1	8.32	8.72	7.56	8.02	2.19	5.88	10400	75
	15		35	20			1	9.84	11.44	9.05	10.52	2.51	6.43	8000	83
	17		40	22	15.8	16	1	13.92	16.72	12.8	15.38	2.98	9.44	7600	135
	20	0 -0.01	47	25			1	15.36	19.6	14.13	18.03	3.69	11.04	6800	195
	25	0 -0.01	52	30			1	—	—	15.23	20.9	4.23	12.24	5600	225
	30	0 -0.012	62	38	19.8	20	1	—	—	22.3	33.41	5.33	17.68	4400	400

C-NASTF15/17/20/25/30 are temporarily not for sale

kgf = N × 0.101972

C-NASTF and C-NASTR products do not come pre-filled with grease; please fill with grease during installation.

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 dislodged or damaged. Therefore, it is important to minimize axial residual force during design and installation.
As shown in scenario (1) below, use a non-separable roller follower; for scenario (2), use a separable roller follower.

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
1. When designing and installing, pay attention to dimension a in the diagram below.

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

3. If there is poor contact between the outer ring and the mating surface, it is recommended to use an arc-type roller follower.

■ 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 refers to the value when steel with a tensile 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 applied to determine 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

CAD Data download and 3D preview are not available because the part number has not yet been determined.

*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

: 30; 45; 60

Part Number
E-NFASTFZS20

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	Basic Load Rating Cr (Dynamic) (kN)	Basic Load Rating Cor (Static) (kN)	Allowable Rotational Speed (rpm)	Seal	Retaining Ring
	MYR 139.75	2 Piece(s)	Available	6 Day(s)	47	19.8	Flat Type	20	[Stainless Steel] SUS440C	[Metric] Metric System	14.13	18.03	4760	Provided	Provided

Product TOP

Basic Information

Product Category	Roller Followers	Roller Follower Type	Separate	Roller Lining	Not Provided
Shaft	Not Provided	Roller Guiding Method	With Retainer	Inner Ring	Provided

Please check the type/dimensions/specifications of the part E-NFASTFZS20 in the Roller Followers - Bearing Separable series.

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1 Part Numbers

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Configure Remaining Specifications

Completed

Specification/Dimensions

type
- C-NASTF
- C-NASTFZ
- C-NASTR
- C-NASTZ
- E-NASTFS
- E-NASTFZS
- E-NASTRS
- E-NASTZS
- E-NFASTFZ
- E-NFASTFZS
- E-NFASTZ
- E-NFASTZS
Clear
Outer Dia. D(mm)
19

24

30

32

35

40

47
Clear
Width B(mm)
9.8

11.8

13.8

15.8

19.8
Clear
Roller Type
- Spherical Outer Ring
  - Crowned Type
- Flat Type
Clear
Roller Follower Inner Dia. D(mm)
6

8

10

12

15

17

20
Clear
Material
- Carbon Steel
  - SUJ2
- Stainless Steel
  - SUS440C
Clear
Size Standards
- Metric
  - Metric System
  - Metric System
Clear
Allowable Rotational Speed(rpm)
2400

2800

3300

4500

4760

4900

5320

5500

5600

6300

6800

7280

7600

8000

8100

8400

9400

9520

9900

10000

10400

11200

12000

13600

16000
Clear
Seal
- Not Provided
- Provided
Clear
Retaining Ring
- 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.

Products like this...

Part Number
C-NASTF8
C-NASTFZ10
C-NASTFZ12
E-NFASTFZS6
E-NFASTFZS8
E-NFASTZ10

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	Basic Load Rating Cr (Dynamic) (kN)	Basic Load Rating Cor (Static) (kN)	Allowable Rotational Speed (rpm)	Seal	Retaining Ring
MYR 14.02	1 Piece(s)	Available	1 Day(s)	24	9.8	Flat Type	8	[Carbon Steel] SUJ2	[Metric] Metric System	4.2	5.4	8000	Not Provided	Not Provided
MYR 20.73	1 Piece(s)	Available	1 Day(s)	30	15.8	Flat Type	10	[Carbon Steel] SUJ2	[Metric] Metric System	2.34	2.38	9400	Provided	Provided
MYR 18.86	1 Piece(s)	Available	1 Day(s)	32	15.8	Flat Type	12	[Carbon Steel] SUJ2	[Metric] Metric System	2.52	2.68	8100	Provided	Provided
MYR 58.94	2 Piece(s)	Available	6 Day(s)	19	13.8	Flat Type	6	[Stainless Steel] SUS440C	[Metric] Metric System	3.03	3.34	11200	Provided	Provided
MYR 62.59	2 Piece(s)	Available	6 Day(s)	24	13.8	Flat Type	8	[Stainless Steel] SUS440C	[Metric] Metric System	4.18	4.33	9520	Provided	Provided
MYR 25.34	2 Piece(s)	Available	6 Day(s)	30	15.8	[Spherical Outer Ring] Crowned Type	10	[Carbon Steel] SUJ2	[Metric] Metric System	7.76	7.74	12000	Provided	Provided

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Roller Followers - Bearing Separable (E-NFASTFZS20)

Economy Roller Followers

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Width B(mm)

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Roller Follower Inner Dia. D(mm)

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Allowable Rotational Speed(rpm)

Seal

Retaining Ring

CAD

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