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16004 bearing dimensions & suffix variants

Look up recorded dimensions for designations beginning with 16004. The table retains complete manufacturer designations so special suffixes and different dimensional variants remain visible.

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Find by measured dimensions

Enter bore d, outside diameter D and width B. Use decimals or inch fractions such as 1/2 or 1 1/4.

Catalogue variant evidence

16004 — published size and closure variants

16004 is the base grouping for the specific records below. Read the complete designation and publisher on each row. The source unit is retained beside the converted unit. A shield or seal can change the width; equal bore and outside diameter do not establish the same envelope.

3 source-labelled records; 3 shown initially.

Publisher / full model	Closure / material	d×D×B in mm	d×D×B in inches	Source unit
SMB16004	OpenChrome steel	20×42×8 mm	0.787402×1.653543×0.314961 in	mm
SMB16004ZZ	ShieldedChrome steel	20×42×8 mm	0.787402×1.653543×0.314961 in	mm
SMB16004-2RS	SealedChrome steel	20×42×8 mm	0.787402×1.653543×0.314961 in	mm

Page 1

Keep RS, 2RS, ZZ and width suffixes distinct

The table records the publisher’s open, shielded or sealed column. An unlisted “RS” marking is not rewritten as “2RS”. Keep special endings such as W21, W23 or a fractional bore suffix: they can identify a different width or bore. No automatic cross-brand substitution is approved.

Metric values converted from printed inch decimals inherit the source rounding. For example, 0.2812 in converts to 7.14248 mm; that extra decimal detail is arithmetic, not a tolerance or a machining target. Never silently round an inch bearing into the nearest metric size. Missing speed, clearance, precision, internal ball diameter, material grade or exact lubricant remain unknown.

Publisher references: SMB product charts and Enduro 1600-series data; checked 2026-10-02. Original BearingScope interpretation. No stock, sales, vehicle fitment or redistributable CAD is implied. Material names describe the source page, not a certificate for every item sold under a similar number.

Metric and inch variant directory Main catalogue dimension finder Exact unit conversion Closure-selection guide

Exact model evidence

16004 dimensions and recorded technical data

The recorded 16004 base designation measures 20×42×8 mm (inside diameter d × outside diameter D × width B). This answer uses unsuffixed records from SKF, NSK, KOYO, NTN. It does not assign the same dimensions or operating ratings to every suffix.

The numeric series boundary is preserved: a longer number is not included merely because its first digits match. 10 recorded variants are listed. A dash means the value is missing, not zero.

Brand / full designation	Named dimensions (mm / in)	Dynamic C (kN)	Static C0 (kN)	Reference speed (rpm)	Limiting speed (rpm)	Mass (kg / g)
SKF16004Deep groove ball bearing	Bore diameter (d) 20 mm 0.787402 in Outside diameter (D) 42 mm 1.653543 in Width (B) 8 mm 0.314961 in	7.28 kN	4.05 kN	38000 rpm	24000 rpm	0.0488 kg48.8 g
NSK16004Deep groove ball bearing	Bore diameter (d) 20 mm 0.787402 in Outside diameter (D) 42 mm 1.653543 in Bearing width (B) 8 mm 0.314961 in	8.7 kN	4.45 kN	—	—	0.048 kg48 g
KOYO16004Deep groove ball bearing	Bore diameter (d) 20 mm 0.787402 in Outside diameter (D) 42 mm 1.653543 in Width (B) 8 mm 0.314961 in	9.9 kN	4.5 kN	—	17000 rpmLimiting Speeds(Grease Lub.): 17000 min-1Limiting Speeds(Oil Lub.): 21000 min-1	0.05 kg50 g
NTN16004Deep groove ball bearing	Internal diameter (d) 20 mm 0.787402 in External diameter (D) 42 mm 1.653543 in Bearing/Inner ring width (B) 8 mm 0.314961 in	8.75 kN	4.5 kN	—	—	0.051 kg51 g
SKF16004/C3Deep groove ball bearing	Recorded bore (d) 20 mm 0.787402 in Recorded outside dimension (D) 42 mm 1.653543 in Catalogue width (symbol unverified) 8 mm 0.314961 in	7.28 kN	4.05 kN	38000 rpm	24000 rpm	0.0488 kg48.8 g
FAG16004-ADeep groove ball bearing	Bore diameter (d) 20 mm 0.787402 in Outside diameter (D) 42 mm 1.653543 in Width (B) 8 mm 0.314961 in	7.1 kN	4.1 kN	13800 rpm	26000 rpm	0.048 kg48 g
FAG16004-A-2ZDeep groove ball bearing	Bore diameter (d) 20 mm 0.787402 in Outside diameter (D) 42 mm 1.653543 in Width (B) 8 mm 0.314961 in	7.1 kN	4.1 kN	13800 rpm	22100 rpm	0.051 kg51 g
FAG16004-A-2Z-C3Deep groove ball bearing	Bore diameter (d) 20 mm 0.787402 in Outside diameter (D) 42 mm 1.653543 in Width (B) 8 mm 0.314961 in	7.1 kN	4.1 kN	13800 rpm	22100 rpm	0.051 kg51 g
FAG16004-A-C3Deep groove ball bearing	Bore diameter (d) 20 mm 0.787402 in Outside diameter (D) 42 mm 1.653543 in Width (B) 8 mm 0.314961 in	7.1 kN	4.1 kN	13800 rpm	26000 rpm	0.048 kg48 g
FAG16004-A-ZDeep groove ball bearing	Bore diameter (d) 20 mm 0.787402 in Outside diameter (D) 42 mm 1.653543 in Width (B) 8 mm 0.314961 in	7.1 kN	4.1 kN	13800 rpm	26000 rpm	0.048 kg48 g

Compare recorded seals, clearance, precision and materials

Manufacturer wording is retained. A missing property is not inferred from another brand or a similar suffix.

Brand / designation	Closure	Original precision	Clearance	Cage	Material	Lubricant
SKF 16004	Without	P6 and tighter width tolerance	CN	Sheet metal	Bearing steel	None
NSK 16004	Open	Not recorded	Not recorded	Not recorded	Not recorded	Not recorded
KOYO 16004	Open	Not recorded	Not recorded	Not recorded	Not recorded	Not recorded
NTN 16004	open	Not recorded	CN	pressed steel cage	Not recorded	Not recorded
SKF 16004/C3	Without	Not recorded	C3	Sheet metal	Bearing steel	None
FAG 16004-A	Without — Not sealed	PN — Normal (ISO 492:2023)	CN (Group N) — Normal internal clearance	JN — Steel sheet metal	Not recorded	Without — Bearing not greased
FAG 16004-A-2Z	2Z — Non-contact shield on both sides	PN — Normal (ISO 492:2023)	CN (Group N) — Normal internal clearance	JN — Steel sheet metal	Not recorded	Lubricating grease
FAG 16004-A-2Z-C3	2Z — Non-contact shield on both sides	PN — Normal (ISO 492:2023)	C3 (Group 3) — Internal clearance larger than CN	JN — Steel sheet metal	Not recorded	Lubricating grease
FAG 16004-A-C3	Without — Not sealed	PN — Normal (ISO 492:2023)	C3 (Group 3) — Internal clearance larger than CN	JN — Steel sheet metal	Not recorded	Without — Bearing not greased
FAG 16004-A-Z	Z — Non-contact shield on one Side	PN — Normal (ISO 492:2023)	CN (Group N) — Normal internal clearance	JN — Steel sheet metal	Not recorded	Without — Bearing not greased

How to compare these values

Use the displayed dimension names and original symbols. Housing length L, height H2 and flange width are not bearing outside diameter D. A catalogue width with an unverified symbol must not be assumed to be inner-ring width B or assembly width T. Open the product record for mounting dimensions and geometry.
Inch values are calculated from the recorded millimetres using 25.4 mm per inch, rounded to six decimal places. They do not change a metric bearing into an inch-series bearing. Gram values are converted from the recorded mass in kilograms.
C and C0 describe different rating conditions. They are not a single safe working-load limit and cannot replace an application load calculation.
Reference and limiting speeds are separate catalogue values. The source grease/oil context is shown where recorded. Lubricant, seals, loads, fit, clearance and cooling affect the usable operating speed.
A common base number does not prove equivalent seals, clearance, precision, material or interchangeability. Open the full designation for these fields.

View full technical record →SKF

16004/C3

Deep groove ball bearing

View full technical record →

Filter all 10 prefix results →

Check the drawing before substituting

Nominal dimensions are not shaft-fit tolerances. Different variants can add grooves, flanges, wider rings or assembly components. When the table has different dimensions, the complete designation—not the shared prefix—controls.

Measurement guide →Cross-reference checks →

Reference basis & data limits

Manufacturer terminology is retained in the product records. Technical reference basis: JTEKT Basic Bearing Knowledge (boundary dimensions, tolerance classes and lubrication); NSK Bearing ABCs (lubrication, designations and clearance); NTN technical FAQs (closure codes and component interchange); SKF rolling-bearing selection and maintenance references.

Selection workflows and catalogue grouping are BearingScope editorial aids. Verify the current drawing and application requirements before using a candidate. Missing database information is not converted into an assumed match.

Find by measured dimensions

16004 — published size and closure variants

Keep RS, 2RS, ZZ and width suffixes distinct

16004 dimensions and recorded technical data

How to compare these values

Related prefix matches — other model numbers may appear

16004

16004

16004

16004

16004-A

16004-A-2Z

16004-A-2Z-C3

16004-A-C3

16004-A-Z

16004/C3

Check the drawing before substituting

Reference basis & data limits

Find, filter and compare bearing model data in one place.