Tapered Roller Bearing MGK 30203 (17x40x13.25 mm)

Main Description

The 30203 single-row tapered roller bearing is engineered for precision and durability in industrial and mechanical systems. With its compact 17 mm bore, 40 mm outer diameter, and 13.25 mm total width, this bearing is ideal for applications that demand both radial and axial load capacity and efficient space usage.

This metric tapered bearing consists of separable components: a cone assembly (inner ring with rollers and cage) and a cup (outer ring), allowing for flexible installation and maintenance. The tapered design ensures that load is evenly distributed, delivering reliable performance and long service life.

Thanks to its ability to carry combined loads, the 30203 bearing is especially well-suited for industrial drive trains, gearboxes, machinery units, and automotive applications where both thrust and radial forces operate in tandem.

Built from high-grade bearing steel and assembled with precision, this bearing offers excellent durability under demanding conditions. The separable cup and cone make it easier to mount, adjust preload, or disassemble for inspection or replacement — a valuable feature for B2B customers focused on maintenance efficiency.

Whether used in a bearing unit, in a gear housing, or on a rotating shaft, the 30203 tapered roller bearing provides dependable performance, low friction, and the capacity to support heavy loads with stability.

Technical Specifications

• Type: Single-row tapered roller bearing

• Model: 30203

• Bore (d): 17 mm

• Outer Diameter (D): 40 mm

• Total Width (T): 13.25 mm

• Cone Width (B): 12 mm; Cup Width (C): 11 mm (typical for this series)

• Internal Geometry: Tapered rollers + cone + cup

• Material: Bearing-grade steel

• Load Capabilities: Supports combined radial and axial (thrust) loads

• Features: Separable cone and cup, adjustable preload, low friction

FAQ

Q1: What load types can the 30203 bearing support?
A1: It can support both radial and axial (thrust) loads due to its tapered roller design.

Q2: Is this bearing easy to install and maintain?
A2: Yes — the cone (inner ring + rollers) and cup (outer ring) can be mounted separately, allowing for flexible installation, preload adjustment, and easier disassembly.

Q3: Why choose a metric tapered roller bearing like 30203?
A3: Metric tapered bearings provide high precision and are well-suited for applications with international or metric-based designs, especially where combined loads are common.

Q4: How do I ensure proper performance when using 30203?
A4: Carefully set axial preload when mounting twin bearings or matching cups/cones, and ensure proper lubrication to maximize life and load capacity.