51103 Thrust Bearing (Thrust Ball Bearing), ISO 104

For a 17 mm shaft and a 30 mm housing bore, the 51103 thrust bearing (ISO 104) is 9 mm high. Modeled as simplified STEP files.

How these parts are made, and what the levels mean: read the method

• Also searched as: 51103 bearing
• Model id: iso104-51103
• Standard: ISO 104 · size 51103

Files

Part key	Simplified
iso104-51103	STEP

Dimensions

Symbol	Name	min	nom	max	Modeled	Rule	Level
d	Shaft washer bore diameter		17		17	nominal	L1
D	Housing washer outside diameter		30		30	nominal	L1
T	Height		9		9	nominal	L1
r	Chamfer dimension	0.3			0.3	single limit (min), modeled at the limit	L1
d1	Shaft washer outside diameter		30 ref		30	reference value	L1
D1	Housing washer bore diameter		18 ref		18	reference value	L1

Drawing

As a PDF: CC-ISO104-SZ-51103.pdf.

The 51103 thrust bearing beside the 51102 and the 51104

The 51103 is number 4 of the 9 ISO 104 thrust bearings published here, listed from 51100 to 51108.

• Shaft washer bore diameter (d): 17 mm on the 51103 thrust bearing, against 15 mm on the 51102 and 20 mm on the 51104.
• Housing washer outside diameter (D): 30 mm on the 51103 thrust bearing, against 28 mm on the 51102 and 35 mm on the 51104.
• Height (T): 9 mm on the 51103 thrust bearing, against 9 mm on the 51102 and 10 mm on the 51104.
• Chamfer dimension (r): at least 0.3 mm on the 51103 thrust bearing, the same on the 51102 and the 51104.
• Shaft washer outside diameter (d1): 30 mm (reference) on the 51103 thrust bearing, against 28 mm (reference) on the 51102 and 35 mm (reference) on the 51104.
• Housing washer bore diameter (D1): 18 mm (reference) on the 51103 thrust bearing, against 16 mm (reference) on the 51102 and 21 mm (reference) on the 51104.

Other sizes

• One size smaller: 51102 Thrust Bearing (Thrust Ball Bearing), ISO 104, 15 mm bore, 28 mm OD, 9 mm high.
• One size larger: 51104 Thrust Bearing (Thrust Ball Bearing), ISO 104, 20 mm bore, 35 mm OD, 10 mm high.

Documents

• CC-ISO104-DS-51103.pdf: 51103 datasheet: values with levels, sources
• CC-ISO104-SZ-51103.pdf: 51103 drawing: this size's values on the views
• parts.json: the part record of this size (the platform contract)

Sources

nsk-thrust, ntn-bearingfinder-thrust, skf-17000-thrust. Full citations: the method page and this size's datasheet.

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