What are the typical applications for KRU series crossed roller bearings?

KRU series crossed roller bearings are typically used in precision machinery such as aerospace components, automotive engines, and heavy machinery. Their high load capacity and precision make them suitable for applications where reliability and performance are critical.

How do I ensure the longevity of KRU series bearings?

To maximize the lifespan of KRU series bearings, it is essential to maintain proper lubrication and avoid exceeding the specified load and speed limits. Regular inspections and timely replacement of worn-out bearings are also crucial for maintaining optimal performance and preventing machine downtime.

KRU Series Crossed Roller Bearings

Precision and Durability for Industrial Applications

The KRU series crossed roller bearings are engineered for high precision and heavy load applications, commonly found in industrial machinery. These bearings are designed to meet the demands of mechanical engineers who require reliable performance under challenging conditions. With their chrome steel construction and ISO Class 0 dimensional accuracy, these bearings offer a combination of precision and durability.

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Product Parameters

This series features pre-drilled mounting holes on both rings, eliminating the need for flanges or support seats. Suitable for both inner and outer ring rotation with stable rotational accuracy and torque.
Model	Bore d (mm)	OD D (mm)	Roller PCD dp (mm)	Width B (mm)	Chamfer r (mm)	Shoulder ds (mm)	Shoulder Dh (mm)	Cr (kN)	C0r (kN)	Weight (kg)
RU28	10	52	28	8	0.3	24	29.5	2.9	3.4	0.12
RU42	20	70	41.5	12	0.3	37	47	7.35	8.35	0.29
RU57	25	80	57	12	0.6	47	58	8.61	10.6	0.4
RU66	35	95	66	15	0.6	59	74	17.5	22.3	0.62
RU85	55	120	85	15	0.6	79	93	20.3	29.5	1
RU124(G) / RU124X	80	165	124	22	1	114	134	33.1	50.9	2.6
RU148(G) / RU148X	90	210	147.5	25	1.5	133	162	49.1	76.8	4.9
RU178(G) / RU178X	115	240	178	28	1.5	161	195	80.3	135	6.8
RU228(G) / RU228X	160	295	227.5	35	2	208	246	104	173	11.4
RU297(G) / RU297X	210	380	297.3	40	2.5	272	320	156	281	21.3
RU445(G) / RU445X	350	540	445.4	45	2.5	417	473	222	473	35.4

Why KRU Series Crossed Roller Bearings Matter for Precision Engineering

The KRU series crossed roller bearings are designed to handle high radial loads and provide high accuracy, making them suitable for precision machinery in industries such as aerospace, automotive, and heavy machinery manufacturing. These bearings are constructed from chrome steel, offering a high load rating of 4000 N and a speed limit of 3000 rpm, ensuring reliable performance even under demanding conditions.

These bearings are particularly advantageous in scenarios where high precision and heavy load capacity are required simultaneously. For instance, in the construction of precision instruments or heavy-duty machinery, KRU series bearings ensure that the machinery operates with minimal friction and maximum efficiency, thereby reducing maintenance costs and downtime.

When compared to other bearing types, the KRU series stands out due to its superior load capacity and precision. This is achieved through the use of high-quality materials and advanced manufacturing processes that ensure dimensional accuracy to ISO Class 0 standards. The flanged housing design also facilitates easy mounting and integration into various machinery setups.

High load rating of 4000 N for reliable performance under heavy loads.
Speed limit of 3000 rpm ensures smooth operation at high speeds.
Chrome steel construction for durability and resistance to wear.

Technical Characteristics and Quantifiable Benefits

STEP 1

High Load Capacity

The KRU series crossed roller bearings are designed to handle heavy radial loads, with a load rating of 4000 N. This makes them ideal for applications such as heavy machinery where high load capacity is critical.

STEP 2

High Speed Limit

With a speed limit of 3000 rpm, these bearings ensure smooth and efficient operation even at high rotational speeds, which is essential for high-performance machinery.

STEP 3

Chrome Steel Construction

Made from chrome steel, these bearings offer superior durability and resistance to wear, making them suitable for long-term use in harsh environments.

STEP 4

ISO Class 0 Dimensional Accuracy

The KRU series bearings are manufactured to ISO Class 0 standards, ensuring high precision and consistency in their dimensions, which is vital for precision machinery.