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Roller Follower NAST Type (Separable Type) (NAST8M)

Roller Follower NAST Type (Separable Type) NAST8M

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  • Volume Discount

THK

THK

Isolation bearing combining a thick inner inner ring and precision cage with needle roller.

(i)Caution

  • Some of the items are scheduled to be discontinued as of end of March in 2023. The manufacturer keep the items produced but they are not available with Misumi.
    There are not the replacement items and the plan to resumption of sale. Please check the quotation and order screen for details.

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Part Number

Configured Part Number is shown.

NAST8M

Drawing

Roller follower NAST type (separable type) dimensional drawing

Product Specification

Optional SpecificationsSymbol
MaterialCarbon steelNo Symbol
Stainless steelM
Rolling
Guide Method		With cageNo Symbol
SealNo sealNo Symbol
Outer ring shapeCylindrical outer ringNo Symbol
Spherical outer ringR

Specifications Table

Part numberMain dimensionsStandard rated loadTrack Load CapacityRotational Speed Limit
*
(min-1)		Weight
g
Inner diameter
dia		Inscribed circle diameter
dr		Outer diameter
D		BCrsminr1sminC
kN		C0
kN		Cylindrical outer ring
kN		Spherical outer ring
kN
NAST 661019109.80.30.34.124.553.531.3720,00017.8
NAST 881224109.80.60.35.685.894.021.8617,00028
NAST 101014301211.810.39.79.675.592.4515,00050
NAST 121216321211.810.310.410.95.982.7413,00058
NAST 151520351211.810.312.314.36.573.1410,00062
NAST 171722401615.810.317.420.910.93.729,500110
NAST 202025471615.810.319.224.512.74.618,500155
NAST 252530521615.810.320.728.414.15.297,000180
NAST 303038622019.810.630.345.422.16.665,500320
NAST 353542722019.810.632.250.625.78.135,000440
NAST 404050802019.81.5135.761.626.99.314,000530
 NAST 454555852019.81.5137.166.428.510.14,000580
NAST 505060902019.81.5138.771.830.2113,500635

note 1) ** Only carbon steel is compatible with the NAST 45 type.
note 2) * indicates compatibility with grease lubrication. Oil lubrication allows up to 130% of this value.
For accuracy standards, please refer to the digital catalog.

Product Feature Details

Roller follower NAST type (separable type) Figure 1: Structure of roller follower NAST-ZZUU type

Figure 1: Structure of the roller follower NAST-ZZUU type

Structure and Features

The roller follower is a compact and highly rigid bearing with a built-in needle bearing, used as a cam follower or as a guide roller for linear motion.
The outer ring is designed to be thick-walled so that it can withstand impact loads, as it rotates while being in direct contact with the mating surface.
In addition, precision cage-equipped needle rollers are built into the inside of the outer ring, which prevents skewing, provides excellent rotating performance, and allows for reliable operation even at high speeds.
Roller followers are available in both separable types, where the inner and outer rings can be separated, and non-separable types, where they cannot be separated.
The outer diameter of the outer ring is available in both spherical and cylindrical shapes. The spherical outer ring can absorb misalignment during installation with ease and helps to reduce uneven loads.
They are widely used in applications such as cam mechanisms of automatic machines and dedicated machines, various transport devices, conveyors, bookbinding machines, tool changers for machining centers, pallet changers, automatic painting machines, and slide-out forks in automated warehouses.

Selection Support Information

Example of Part Number Structure

Example of part number configuration for roller follower NAST type (separable type)

Cautions and Prohibitions

Handling

(1) Do not disassemble each part. It may cause loss of function.
(2) Do not drop or hit the roller follower. It may cause injury or damage.
In addition, please note that when shock was applied, the product may lose its function even though there is no visible damage to the external appearance.
(3) When handling the product, wear protective gloves, safety shoes, and the like as necessary to ensure safety.

Precautions for use

(1) Avoid continuous use at temperatures above 80°C. If the temperature exceeds this level, resin and rubber parts may be deformed or damaged.
(2) Be careful to prevent contaminants such as cutting chips or coolant from entering. Otherwise, it may cause damage.
(3) If cutting chip or other contaminant adheres, please clean it and then reapply lubricant.
(4) Roller followers can bear radial load, so please avoid using them in a way that involves thrust load.
(5) In cases of slight oscillation, it is difficult for an oil film to form on the contact surfaces between the rolling element and the rolling surface, which may cause fretting. Please use grease with excellent fretting resistance. In addition, it is recommended to perform a rotating operation of about one full turn periodically to form an oil film on the rolling surface and rolling element.
(6) If the rigidity and accuracy of the mounting components are insufficient, the load on the bearing will be locally concentrated, and the bearing performance will be significantly reduced. Therefore, please thoroughly consider the rigidity and accuracy of the housing and base, as well as the strength of the fixing bolts.

Lubrication

(1) Some types of roller follower are not filled with grease depending on the model number, so please lubricate the ones not filled with grease before use. Standard grease is No. 2 lithium soap based grease.
(2) Avoid mixing different lubricants, and be sure to replenish lubricant as needed during use.
Even if the thickener is the same type of grease, differences in additives and other components may have adverse effects on each other.
(3) Please also apply lubricant between the roller follower and the mating rolling surface before use.
(4) When used in locations subject to constant vibration, clean rooms, vacuum, or special environments such as low or high temperatures, please use grease suitable for the specifications and environment.
(5) The consistency of the grease changes depending on the temperature. Please note that changes in consistency will also affect the sliding resistance of the roller follower.
(6) After lubrication, the sliding resistance of the roller follower may increase due to the mixing resistance of the grease. Be sure to perform a break-in operation and allow the grease to fully blend in before operating the machine.
(7) Even with seals, excess grease may splatter around during initial use or immediately after re-lubrication, so please wipe it off as needed before use.
(8) The properties of grease deteriorate and its lubrication performance declines over time, so it is necessary to inspect and replenish the grease according to usage frequency.
(9) Lubrication intervals vary depending on usage conditions and operating environment. Please determine the final lubrication interval and amount based on actual machine operation.

Storage

Please store the roller follower indoors, in MISUMI's packaging and shipping configuration, avoiding high temperatures, low temperatures, and high humidity.
For products stored for a long period, the internal lubricant may have deteriorated over time, so please replenish the lubricant before use.

Disposal

Please dispose of the product appropriately as industrial waste.

30
45
60
  1. 1
Part Number
NAST8M
Part NumberStandard Unit PriceMinimum order quantityVolume DiscountDays to ShipRoHSOuter Diameter D
(mm) 		Width C
(mm) 		Roller Type Roller Follower Inner Dia. D
(mm) 		Material Basic Load Rating Dynamic Rating
(kN) 		Basic Load Rating Static Rating
(kN) 		Allowable Rotational Speed
(rpm) 		Track Load Capacity
(kN)

MYR 107.65

1 Piece(s)Available 12 Day(s) or more -249.8Cylindrical Outer Ring8Stainless Steel5.685.89170004.02

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  1. 1
 

Basic Information

Product Category Roller Follower Size Standard Metric Roller Follower Type Separate Type
Roller Lining No Axis No Rolling Guide Method With Gage
Inner Ring Presence Sealing Structure No Seal Dedicated Grease Fitting Included NA

Please check the type/dimensions/specifications of the part NAST8M in the Roller Follower NAST Type (Separable Type) series.

Configure

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Configure Remaining Specifications
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Specification/Dimensions

  • type

    • NAST
    • NAST-R

    Clear

  • Outer Diameter D(mm)

    • 19
    • 24
    • 32
    • 35
    • 40
    • 47
    • 52
    • 62
    • 72
    • 80

    Clear

  • Width C(mm)

    • 9.8
    • 11.8
    • 15.8
    • 19.8

    Clear

  • Roller Type

    • Spherical Outer Ring
    • Cylindrical Outer Ring

    Clear

  • Roller Follower Inner Dia. D(mm)

    • 6
    • 8
    • 12
    • 15
    • 17
    • 20
    • 25
    • 30
    • 35
    • 40

    Clear

  • Material

    • Carbon Steel
    • Stainless Steel

    Clear

  • Allowable Rotational Speed(rpm)

    • 4000
    • 5000
    • 5500
    • 7000
    • 8500
    • 9500
    • 10000
    • 13000
    • 17000
    • 20000

    Clear

  • Track Load Capacity(kN)

    • 2.74
    • 3.14
    • 3.53
    • 3.72
    • 4.02
    • 4.61
    • 5.29
    • 6.57
    • 6.66
    • 12.7
    • 14.1
    • 25.7
    • 26.9

    Clear

  • CAD

    • 2D
    • 3D

    Clear

Days to Ship

    • All
    • 4 Day(s) or Less
    • 5 Day(s) or Less
    • 11 Day(s) or Less
    • 12 Day(s) or Less
    • 13 Day(s) or Less
    • 43 Day(s) or Less

    Clear

Specify Alterations

Products like this...

Part Number
NAST12MR
NAST12R
NAST15M
NAST15MR
NAST17MR
NAST20
Part NumberStandard Unit PriceMinimum order quantityVolume DiscountDays to ShipRoHSOuter Diameter D
(mm) 		Width C
(mm) 		Roller Type Roller Follower Inner Dia. D
(mm) 		Material Basic Load Rating Dynamic Rating
(kN) 		Basic Load Rating Static Rating
(kN) 		Allowable Rotational Speed
(rpm) 		Track Load Capacity
(kN)

MYR 142.38

1 Piece(s)Available 43 Day(s) or more -3211.8Spherical Outer Ring12Stainless Steel10.410.9130002.74

MYR 60.30

1 Piece(s) 4 Day(s) or more 103211.8Spherical Outer Ring12Carbon Steel10.410.9130002.74

MYR 159.71

1 Piece(s)Available 43 Day(s) or more -3511.8Cylindrical Outer Ring15Stainless Steel12.314.3100006.57

MYR 201.41

1 Piece(s)Available 43 Day(s) or more -3511.8Spherical Outer Ring15Stainless Steel12.314.3100003.14

MYR 204.89

1 Piece(s)Available 43 Day(s) or more -4015.8Spherical Outer Ring17Stainless Steel17.420.995003.72

MYR 113.35

1 Piece(s)Available 11 Day(s) or more 104715.8Cylindrical Outer Ring20Carbon Steel19.224.5850012.7

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