KOYO bearings 6466/6420
JTEKT Japanese KOYO Bearings 6466/6420 Quick Delivery KOYO Tapered roller bearings.Suitable for various devices
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Model:23188RK
Dimensions(mm):440x720x226mm
Email:skfnskoyo@gmail.com
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Japan’s koyo bearing company produces tens of thousands of high-precision and high-quality Koyo bearing series products), providing information about aerospace technology, computer components, motors, high-speed trains, MRT trains, industrial machinery, CNC lathes, high-precision machining machines, automobile, locomotive industry, steel industry And other important components to make the best choice.
Of course. The code KOYO 23188RK refers to a specific variant of a large bore tapered roller bearing.
Here is the detailed breakdown:
Manufacturer: KOYO (A major Japanese bearing manufacturer, now part of JTEKT Corporation).
Type: Tapered Roller Bearing. Designed to handle heavy combined radial and axial loads.
Series: The prefix 23188 defines the bore size and external dimensions.
The "2" signifies a metric tapered roller bearing.
The "3" indicates a wide contact angle, optimized for heavy axial loads.
The number "188" specifies the nominal bore size.
Bore Diameter: The nominal bore size is 440 mm. The "K" suffix is critical to understanding the actual bore type.
Suffix: The suffix RK defines the bearing's key features:
R: Indicates a flanged outer ring (cup). The flange acts as a shoulder, making axial location and installation into the housing simpler and more secure.
K: This is the crucial feature. The "K" indicates that the bearing has a tapered bore. The bore is not cylindrical; it is ground to a slight taper (usually a 1:12 ratio).
The external dimensions are identical to other bearings in the 23188 series.
| Dimension | Value (mm) | Value (inches) |
|---|---|---|
| Bore Diameter (d) | 440 mm (Tapered) | 17.3228 in (Tapered) |
| Outer Diameter (D) | 720 mm | 28.3465 in |
| Width (T) | ~ 226 mm | ~ 8.8976 in |
| Taper | 1:12 (Standard) | |
| Weight | ~ 206 kg | ~ 454 lbs |
Crucial Note: The "K" suffix means the bore is tapered. The specified bore diameter (440mm) is a nominal size. The actual diameter will vary along the length of the bore. This bearing requires an adapter or withdrawal sleeve for installation on a straight shaft.
The "RK" suffix combination tells us two things: it has a flange (R) and a tapered bore (K). The absence of the "HA" suffix is significant.
KOYO 23188RK: Has a flanged outer ring and a tapered bore. The internal components (rollers and cone) are made from standard through-hardened steel.
KOYO 23188RHAK: Has a flanged outer ring, a tapered bore, and features case-hardened (HA) internal components.
The HA (case-hardening) version is more robust and designed for the most severe applications with high shock loads or potential contamination. The RK version is still extremely heavy-duty but is typically for less severe operating conditions.
JTEKT Japanese KOYO Bearings 6466/6420 Quick Delivery KOYO Tapered roller bearings.Suitable for various devices
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