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Shell Type Needle Roller Bearing

Shell Type Needle Roller Bearing

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  • Shell Type Needle Roller Bearing

A bearing in which an outer ring is formed from a thin steel plate by precision drawing, the raceway surface is surface-hardened, and then a needle-shaped roller and a retainer are assembled.
[Features]
・ It has the smallest cross-sectional height of any bearing with an outer ring, enabling space reduction and cost savings.
・ Compact design is possible with the shaft directly as the raceway surface without using the inner ring.
・ The outer ring has a structure in which the needle roller and the retainer are not separated.
・ Retaining rings are not required for fixing in the axial direction by simply press-fitting into a rigid housing with an appropriate fit.
[Applications]
・ Heavy load, high speed, gearbox for automobiles, etc.
・ Steel equipment, mining / construction machinery, machine tools.

(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.

PDF

Japanese Only

Drawing

Drawing 1 of shell type needle roller bearing

HK type, HMK type (Open-ended type)

Drawing 2 of shell type needle roller bearing

HK, ZWD type (Open-ended type)

Drawing 3 of shell type needle roller bearing

BK type (Closed end type)

Drawing 4 of shell type needle roller bearing

BK ‥ ZWD type (Closed end type)

Product features details

Shell-type needle roller bearings that can reduce space and cost

It is a bearing in which an outer ring is formed from a thin steel plate by precision drawing, the raceway surface is surface-hardened, and then a needle-shaped roller and a retainer are assembled (as for the part numbers with "M" in the suffix, they are heat treated after assembling). It has the smallest cross-sectional height of any bearing with an outer ring, enabling space reduction and cost savings.
Usually, a design is taken in which the shaft is directly used as the raceway surface without using the inner ring. The outer ring has a structure in which the needle-shaped roller and the retainers are not separated, and the bearing is easy to handle because it does not require a retaining ring to fix it in the axial direction, just by press-fitting it into a rigid housing with an appropriate fit.

Type, structure, and features of shell needle roller bearings

TypeCompatible shaft diameter (mm)Nominal NumberComposition and dimensionsNote
HK
(HK・・T2)
Standard
Series
Open Endø3 to ø50HK0609T2Diameter of Inscribed Circle: ø6
Width dimensions: 9
T2: Resin retainer
Since the suffix T2 uses a polyamide resin molding retainer, the allowable temperature should be 120°C, and 100°C or less for continuous use.
Premium shell bearings have F in the suffix. See CATNO.3029 (Premium Shell Bearing) for details. Those with an M in the suffix are heat-treated products after assembly. (Pre-vent specifications)
HK・・LOpen End
One-sided seal
ø12 to ø50HK2018L/3ASDiameter of Inscribed Circle: ø20
Width dimensions: 18
L: One-sided seal
3AS: Grease
The seal type (tailing symbol: L or LL) with a built-in synthetic rubber sealing seal on one side or both sides has lithium soap-based grease sealed inside.
To prevent deterioration of the seal and grease, the operating temperature should be -20 to 120°C, and within 100°C for continuous use.
This type has a shorter roller length and a smaller rated load than the open type with the same dimensions.
HK・・LLOpen End
Double-sided seal
ø12 to ø50HK2020LL/3ASDiameter of Inscribed Circle: ø20
Width dimensions: 20
LL: Double-sided seal
3AS: Grease
HK・・ZWDOpen End
Double row type
ø15 to ø30HK2030ZWDDiameter of Inscribed Circle: ø20
Width dimensions: 30
ZW: Retainer double row
D: Outer ring lubrication hole
This type has a lubrication hole in the outer ring.
HMK
(HMK・・T2)
Open Endø8 to ø50HMK2015Diameter of Inscribed Circle: ø20
Width dimensions: 15
Since the suffix T2 uses a polyamide resin molding retainer, the allowable temperature should be 120°C, and 100°C or less for continuous use.
HMK・・LOpen End
One-sided seal
ø8 to ø50HMK2018L/3ASDiameter of Inscribed Circle: ø20
Width dimensions: 18
L: One-sided seal
3AS: Grease
The seal type (tailing symbol: L or LL) with a built-in synthetic rubber sealing seal on one side or both sides has lithium soap-based grease sealed inside.
To prevent deterioration of the seal and grease, the operating temperature should be -20 to 120°C, and within 100°C for continuous use.
This type has a shorter roller length and a smaller rated load than the open type with the same dimensions.
HMK・・LLOpen End
Double-sided seal
ø8 to ø50HMK2021LL/3ASDiameter of Inscribed Circle: ø20
Width dimensions: 20
LL: Double-sided seal
3AS: Grease
HMK・・ZWDOpen End
Double row type
ø38 to ø50HK3845ZWDDiameter of Inscribed Circle: ø38
Width dimensions: 45
ZW: Retainer double row
D: Outer ring lubrication hole
This type has a lubrication hole in the outer ring.
BK
(BK・・T2)
Closed Endø3 to ø50BK2020CDiameter of Inscribed Circle: ø20
Width dimensions: 20
C: Welding retainer
Since the suffix T2 uses a polyamide resin molding retainer, the allowable temperature should be 120°C, and 100°C or less for continuous use.
BK・・LClosed End
One-sided seal
ø12 to ø50BK2018L/3ASDiameter of Inscribed Circle: ø20
Width dimensions: 18
L: One-sided seal
3AS: Grease
This seal type (suffix: L) has lithium soap-based grease sealed inside.
To prevent deterioration of the seal and grease, the operating temperature should be -20 to 120°C, and continuous use should be within 100°C.
BK・・ZWDClosed End
Double row type
ø15 to ø30BK2030ZWDDiameter of Inscribed Circle: ø20
Width dimensions: 30
ZW: Retainer double row
D: Outer ring lubrication hole
This type has a lubrication hole in the outer ring.

About allowable rotational speed

The permissible rotational speed is the permissible rotational speed that can be achieved based on the following assumptions.

  • Use under conditions where an appropriate amount of grease recommended by NTN is sealed, and the heat generated by sufficient familiar operation, cooling of the outer cylinder, etc., is removed.
  • Use with constant pressure preload.
Part Number
7E-HMK1525
7E-HMK2215
7E-HMK2616
7E-HMK3220
7E-HMK3230
7E-HMK4020
7E-HMK4025
7E-HMK5012
7E-HMK5015
7E-HMK5025
BK0408T2
BK0509
BK0609T2
BK0709
BK1010
BK1012
BK1210
BK1516
BK1816
BK2016
BK2820
DCL44T2
DCL47T2
DCL88
DCL1612
HK0306T2
HK0408T2
HK0609FM
HK0609T2
HK0709
HK0810
HK0810C
HK0910
HK0912
HK1010
HK1012
HK1012F
HK1015
HK1210
HK1212
HK1212FM
HK1214L
HK1214L/3AS
HK1216LL
HK1216LL/3AS
HK1312
HK1412
HK1412FM
HK1414L/3AS
HK1416
HK1512
HK1514L
HK1514L/3AS
HK1516
HK1516D
HK1516LL/3AS
HK1522ZWD
HK1612
HK1614L/3AS
HK1616F
Part NumberMinimum order quantityVolume DiscountDays to ShipRoHSLoad Direction Inner Dia. d
(Ø)
Outer Dia. D
(Ø)
Width B
(mm)
Number of Raceway Ring Rows Size Standards Retainer Type Basic Load Rating: Dynamic Load
(N)
Sealing Structure Lubricant Format symbol Holder Symbol Specifications Revolution Frequency
(rpm)
Series Case hardening (outer ring only) Outer ring oil hole Premium shell bearing Post-assembly heat treatment (pre-bent type)
1 Piece(s) 10 Day(s) or more -Radial152225Single RowMetric System-18500NANAHMK-Open End11000Heavy LoadCase hardeningNANANA
1 Piece(s) 10 Day(s) or more -Radial / Thrust---Single RowMetric System-13,400NAN/A7E-HMK-Open End7500Heavy dutyCase hardeningN/AN/AN/A
1 Piece(s) 7 Day(s) or more 10Radial263416Single RowMetric System-17100NANAHMK-Open End6000Heavy LoadCase hardeningNANANA
1 Piece(s) 10 Day(s) or more -Radial324220Single RowMetric System-27500NANAHMK-Open End5000Heavy LoadCase hardeningNANANA
1 Piece(s) 10 Day(s) or more 10Radial324230Single RowMetric System-41500NANAHMK-Open End5000Heavy LoadCase hardeningNANANA
1 Piece(s) 10 Day(s) or more -Radial405020Single RowMetric System-32500NANAHMK-Open End4000Heavy LoadCase hardeningNANANA
1 Piece(s) 4 Day(s) or more -Radial405025Single RowMetric System-41000NANAHMK-Open End4000Heavy LoadCase hardeningNANANA
1 Piece(s) 93 Day(s) or more 10Radial506212Single RowMetric System-18200NANAHMK-Open End3200Heavy LoadCase hardeningNANANA
1 Piece(s) 10 Day(s) or more -Radial506215Single RowMetric System-25900NANAHMK-Open End3200Heavy LoadCase hardeningNANANA
1 Piece(s) 7 Day(s) or more 10Radial506225Single RowMetric System-48000NANAHMK-Open End3200Heavy LoadCase hardeningNANANA
1 Piece(s) 7 Day(s) or more 10Radial488Single RowMetric SystemResin Forming1770NANABKT2 (Polyamide Resin Forming Holder)Closed End30000StandardNANANANA
1 Piece(s) Same day 10Radial599Single RowMetric System-2640NANABK-Closed End27000StandardNANANANA
1 Piece(s) 7 Day(s) or more 10Radial6109Single RowMetric SystemResin Forming2660NANABKT2 (Polyamide Resin Forming Holder)Closed End25000StandardNANANANA
1 Piece(s) 7 Day(s) or more -Radial7119Single RowMetric System-3400NANABK-Closed End23000StandardNANANANA
1 Piece(s) 4 Day(s) or more 10Radial101410Single RowMetric System-4500NANABK-Closed End16000StandardNANANANA
1 Piece(s) 4 Day(s) or more 10Radial101412Single RowMetric System-5900NANABK-Closed End16000StandardNANANANA
1 Piece(s) 7 Day(s) or more -Radial121610Single RowMetric System-5050NANABK-Closed End13000StandardNANANANA
1 Piece(s) 4 Day(s) or more 10Radial152116Single RowMetric System-10700NANABK-Closed End11000StandardNANANANA
1 Piece(s) 7 Day(s) or more 10Radial182416Single RowMetric System-11800NANABK-Closed End8500StandardNANANANA
1 Piece(s) 7 Day(s) or more 10Radial202616Single RowMetric System-13000NANABK-Closed End8000StandardNANANANA
1 Piece(s) 7 Day(s) or more 10Radial283520Single RowMetric System-21300NANABK-Closed End5500StandardNANANANA
1 Piece(s) 7 Day(s) or more 10Radial6.350(1/4)11.112(7/16)6.350(1/4)Single RowInch BaseResin Forming1580NANADCLT2 (Polyamide Resin Forming Holder)Open End25000InchNANANANA
1 Piece(s) 7 Day(s) or more 10Radial6.350(1/4)11.112(7/16)11.112(7/16)Single RowInch BaseResin Forming3550NANADCLT2 (Polyamide Resin Forming Holder)Open End25000InchNANANANA
1 Piece(s) Same day 10Radial12.700(1/2)17.462(11/16)12.700(1/2)Single RowInch Base-6700NANADCL-Open End13000InchNANANANA
1 Piece(s) 4 Day(s) or more 10Radial25.400(1)31.750(1 1/4)19.050(3/4)Single RowInch Base-18600NANADCL-Open End6500InchNANANANA
1 Piece(s) Same day 10Radial36.56Single RowMetric SystemResin Forming925NANAHKT2 (Polyamide Resin Forming Holder)Open End33000StandardNANANANA
1 Piece(s) 4 Day(s) or more -Radial488Single RowMetric SystemResin Forming1770NANAHKT2 (Polyamide Resin Forming Holder)Open End30000StandardNANANANA
1 Piece(s) Same day 10Radial6109Single RowMetric System-2920NANAHK-Open End37000StandardNANAAvailableAvailable
1 Piece(s) Same day -Radial6109Single RowMetric SystemResin Forming2660NANAHKT2 (Polyamide Resin Forming Holder)Open End25000StandardNANANANA
1 Piece(s) Same day -Radial7119Single RowMetric System-3400NANAHK-Open End23000StandardNANANANA
1 Piece(s) Same day 10Radial81210Single RowMetric System-3850NANAHK-Open End30000StandardNANANANA
1 Piece(s) 4 Day(s) or more 10Radial81210Single RowMetric SystemWeld Shape3850NANAHKC (Weld Holder)Open End20000StandardNANANANA
1 Piece(s) 7 Day(s) or more 10Radial91310Single RowMetric System-4300NANAHK-Open End27000StandardNANANANA
1 Piece(s) 4 Day(s) or more -Radial91312Single RowMetric System-5650NANAHK-Open End18000StandardNANANANA
1 Piece(s) Same day -Radial101410Single RowMetric System-4500NANAHK-Open End16000StandardNANANANA
1 Piece(s) Same day -Radial101412Single RowMetric System-5900NANAHK-Open End16000StandardNANANANA
1 Piece(s) 4 Day(s) or more 10Radial101412Single RowMetric System-5650NANAHK-Open End24000StandardNANAAvailableNA
1 Piece(s) Same day -Radial101415Single RowMetric System-7100NANAHK-Open End16000StandardNANANANA
1 Piece(s) Same day -Radial121610Single RowMetric System-5050NANAHK-Open End13000StandardNANANANA
1 Piece(s) Same day -Radial121812Single RowMetric System-6600NANAHK-Open End13000StandardNANANANA
1 Piece(s) Same day 10Radial121812Single RowMetric System-6600NANAHK-Open End20000StandardNANAAvailableAvailable
1 Piece(s) 10 Day(s) or more -Radial---Single RowMetric System--One-sided Seal TypeN/AHK-Open End One-sided Seal13000StandardN/AN/AN/AN/A
1 Piece(s) 10 Day(s) or more -Radial---Single RowMetric System--One-sided Seal TypeAvailableHK-Open End One-sided Seal13000StandardN/AN/AN/AN/A
1 Piece(s) 10 Day(s) or more -Radial---Single RowMetric System--Double-sided seal typeN/AHK-Open End Double-sided Seal13000StandardN/AN/AN/AN/A
1 Piece(s) 13 Day(s) or more -Radial---Single RowMetric System--Double-sided seal typeAvailableHK-Open End Double-sided Seal13000StandardN/AN/AN/AN/A
1 Piece(s) 4 Day(s) or more -Radial131912Single RowMetric System-6950NANAHK-Open End12000StandardNANANANA
1 Piece(s) Same day 10Radial142012Single RowMetric System-7200NANAHK-Open End11000StandardNANANANA
1 Piece(s) Same day -Radial142012Single RowMetric System-7200NANAHK-Open End11000StandardNANAAvailableAvailable
1 Piece(s) 10 Day(s) or more -Radial---Single RowMetric System--One-sided Seal TypeAvailableHK-Open End One-sided Seal11000StandardN/AN/AN/AN/A
1 Piece(s) Same day -Radial142016Single RowMetric System-10700NANAHK-Open End11000StandardNANANANA
1 Piece(s) 4 Day(s) or more -Radial152112Single RowMetric System-7500NANAHK-Open End11000StandardNANANANA
1 Piece(s) 7 Day(s) or more -Radial---Single RowMetric System--One-sided Seal TypeN/AHK-Open End One-sided Seal11000StandardN/AN/AN/AN/A
1 Piece(s) Same day -Radial---Single RowMetric System--One-sided Seal TypeAvailableHK-Open End One-sided Seal11000StandardN/AN/AN/AN/A
1 Piece(s) Same day 10Radial152116Single RowMetric System-10700NANAHK-Open End11000StandardNANANANA
1 Piece(s) 10 Day(s) or more -Radial---Single RowMetric System-10700NAN/AHK-Open End11000StandardN/AAvailableN/AN/A
1 Piece(s) 7 Day(s) or more -Radial152116Single RowMetric System-10700Double-sided Seal TypeAvailableHK-Open End Double-sided Seal16000StandardNANANANA
1 Piece(s) 7 Day(s) or more -Radial152122Double RowMetric System-12900NANAHK-Open End Multiple-Row Type11000StandardNAAvailableNANA
1 Piece(s) 4 Day(s) or more -Radial162212Single RowMetric System-7750NANAHK-Open End10000StandardNANANANA
1 Piece(s) 10 Day(s) or more -Radial---Single RowMetric System--One-sided Seal TypeAvailableHK-Open End One-sided Seal10000StandardN/AN/AN/AN/A
1 Piece(s) 7 Day(s) or more 10Radial162216Single RowMetric System-11100NANAHK-Open End15000StandardNANAAvailableNA

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Basic Information

Raceway Ring Shape Needle Roller Outer Ring With Outer Ring Inner/Outer Ring Material Steel
Specifications/Environment Standard Rolling Element Material Steel Outer Ring Type Flat

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