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FafnirPMM210KSMBRSpindle Deep Groove Ball Bearing – 50 mm Bore, 90 mm Outside Diameter, 20 mm Width, Open, Machined Bronze Cage, ABEC 7 / P4

Condition: New – Open box
Condition Note: Made In USA, New Old Stock

Availability:

4 in stock

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Spindle deep groove ball bearing, 50 x 90 x 20 mm, open, straight bore. ABEC 7 / P4 precision, machined bronze cage, CN clearance, single row.

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$32.93

4 in stock

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Specifications

Key Specifications

MFR / BrandFafnir
MPNPMM210KSMBR
ModelPMM210KSMBR
Bearing TypeBall Bearing, Open
ID50 mm
OD90 mm
Width20 mm

Technical Specifications

Base Number210K
Industry TermsSpindle deep groove ball bearing, super precision radial ball bearing, machine tool spindle bearing
Common MisspellingsPMM210K-SMBR, PM210KSMBR, MM210KSMBR, PMM201KSMBR
Overall Width20 mm
Mpn VariantsPMM210KSMBR, P-MM-210-K-SMBR, PMM210K SMBR, MM210KMBR, MM210K, 210K, 6210-P4
Precision ClassABEC 7 / P4
Dynamic Load Rating C138,900 N
Additional AttributesC1 ISO dynamic radial rating per row: 35,400 N; max shaft fillet radius 1 mm; shaft backing shoulder diameter 57.4 mm; housing backing shoulder diameter 83.3 mm
Cage TypeMachined
Dynamic Load Rating38,900 N
Static Load Rating23,100 N
Precision RatingABEC 7 / P4
Series200
Rolling ElementsBall
Cage MaterialBronze
Number Of Rows1
Bore TypeStraight
Internal ClearanceCN
Design UnitsMetric
Bearing MaterialChrome steel
Part NumberPMM210KSMBR
Closure TypeOpen

Cross-References

Cross Reference 1Timken MM210K - phenolic cage instead of machined bronze
Cross Reference 2Fafnir 210K - same size, no MM precision prefix
Cross Reference 3SKF 6210 - standard-class deep groove, 50x90x20 mm
Cross Reference 4FAG 6210 - standard-class deep groove, 50x90x20 mm
Cross Reference 5NSK 6210 - standard-class deep groove, 50x90x20 mm
Cross Reference 6NTN 6210 - standard-class deep groove, 50x90x20 mm
Cross Reference 7Koyo 6210 - standard-class deep groove, 50x90x20 mm
Cross Reference 8MRC 210S - standard-class deep groove, 50x90x20 mm
Cross Reference 9Nachi 6210 - standard-class deep groove, 50x90x20 mm
Seller Part Number: BC1#FN8HHV

Product Description

What this part is:

Fafnir PMM210KSMBR single-row spindle deep groove ball bearing, 200K series. Bore Diameter: 50 mm. Outside Diameter: 90 mm. Overall Width: 20 mm. Bore Type: Straight. Closure Type: Open. Rolling Elements: Ball. Number Of Rows: 1. Cage Material: Bronze. Cage Type: Machined. Bearing Material: Chrome steel. Internal Clearance: CN. Precision Class: ABEC 7 / P4. Series: 200. Base Number: 210K. Unit Quantity: 1 Pc.

Decoding the designation:

MM — Fafnir super-precision build, ISO P4, ABEC 7.

210 — 200 series, bore code 10, giving a 50 mm bore on the 90 mm outside diameter of the 6210 envelope.

K — spindle deep groove execution: a Conrad-type deep groove raceway built to spindle tolerances, with no contact angle.

MBR — machined bronze cage.

Specifications:

Dynamic Load Rating: 38,900 N. Dynamic Load Rating (ISO, per row): 35,400 N. Static Load Rating: 23,100 N. Precision Class: ABEC 7 / P4. Internal Clearance: CN. Cage Material: Bronze. Cage Type: Machined. Lubricant: grease or oil. Design Units: Metric.

Dimensions and mounting:

Bore Diameter: 50 mm. Outside Diameter: 90 mm. Overall Width: 20 mm. Max Shaft Fillet Radius Cleared By The Bearing Corner: 1 mm. Shaft Backing Shoulder Diameter: 57.4 mm. Housing Backing Shoulder Diameter: 83.3 mm. Outer Ring To-Clear Radius: 1 mm.

Compatibility and replacement:

Cross-references: Timken MM210K (phenolic cage instead of machined bronze); Fafnir 210K (same size, no MM precision prefix). Standard-class deep groove bearings on the 6210 size, 50 x 90 x 20 mm: SKF 6210; FAG 6210; NSK 6210; NTN 6210; Koyo 6210; MRC 210S; Nachi 6210. Searchable forms: PMM210KSMBR, P-MM-210-K-SMBR, MM210K, 210K, 6210-P4.

Frequently asked questions:

What are the dimensions of the Fafnir PMM210KSMBR?

Bore Diameter: 50 mm. Outside Diameter: 90 mm. Overall Width: 20 mm.

What precision class and cage does it have?

Precision Class: ABEC 7 / P4. Cage Material: Bronze, machined (MBR).

What are the load ratings?

Dynamic Load Rating: 38,900 N. Static Load Rating: 23,100 N.

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