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

RA series crossed roller bearings are typically used in heavy-duty machinery where high load capacity and precision are required. Common applications include machine tool spindles, precision positioning tables, and heavy-duty robotics. They are also used in steel industry equipment, such as rolling mills, and in aerospace for precision control mechanisms.

How do I ensure the correct installation of RA series crossed roller bearings?

Proper installation is crucial for the performance and longevity of RA series crossed roller bearings. Follow the manufacturer's guidelines for installation, ensuring that the bearing housing is clean and free of debris. Use appropriate tools to handle the bearings to avoid damage. Ensure that the bearing is seated correctly and that there is no misalignment. Regular maintenance and checks are also essential to prevent premature failure.

What maintenance is required for RA series crossed roller bearings?

Regular maintenance is key to the long-term performance of RA series crossed roller bearings. This includes periodic inspections for wear, ensuring proper lubrication, and checking for any signs of damage or misalignment. Depending on the operating conditions, the frequency of maintenance may vary. It is recommended to consult the manufacturer's maintenance schedule for specific guidance tailored to your application.

RA Series Crossed Roller Bearings

Precision and Durability for Heavy-Duty Applications

The RA series crossed roller bearings are engineered for high precision and reliability in demanding environments. These bearings are specifically designed to handle substantial radial, axial, and moment loads with minimal cross-sectional height and a compact design. They are widely used in industries such as steel, automotive, aerospace, and heavy machinery where high load capacity and precision are critical.

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Product Parameters

Model	Inner d(mm)	Outer D(mm)	Pitch Diameter dp(mm)	Width B(mm)	Grease Hole a(mm)	Grease Hole b(mm)	Min Radius r_min(mm)	ds_max(mm)	Dh_min(mm)	Dynamic Load C(kN)	Static Load C0(kN)	Weight(kg)
RA 5008	50	66	57	8	2	0.8	0.5	53.5	60.5	5.1	7.19	0.08
RA 6008	60	76	67	8	2	0.8	0.5	63.5	70.5	5.68	8.68	0.09
RA 7008	70	86	77	8	2	0.8	0.5	73.5	80.5	5.98	9.8	0.1
RA 8008	80	96	87	8	2	0.8	0.5	83.5	90.5	6.37	11.3	0.11
RA 9008	90	106	97	8	2	0.8	0.5	93.5	100.5	6.76	12.4	0.12
RA 10008	100	116	107	8	2	0.8	0.5	103.5	110.5	7.15	13.9	0.14
RA 11008	110	126	117	8	2	0.8	0.5	113.5	120.5	7.45	15	0.15
RA 12008	120	136	127	8	2	0.8	0.5	123.5	130.5	7.84	16.5	0.17
RA 13008	130	146	137	8	2	0.8	0.5	133.5	140.5	7.94	17.6	0.18
RA 14008	140	156	147	8	2	0.8	0.5	143.5	150.5	8.33	19.1	0.19
RA 15008	150	166	157	8	2	0.8	0.5	153.5	160.5	8.82	20.6	0.2
RA 16013	160	186	172	13	2.5	1.6	0.8	165	179	23.3	44.9	0.59
RA 17013	170	196	182	13	2.5	1.6	0.8	175	189	23.5	46.5	0.64
RA 18013	180	206	192	13	2.5	1.6	0.8	185	199	24.5	49.8	0.68
RA 19013	190	216	202	13	2.5	1.6	0.8	195	209	24.9	51.5	0.69
RA 20013	200	226	212	13	2.5	1.6	0.8	205	219	25.8	54.7	0.71

Why Choose RA Series Crossed Roller Bearings for Your Heavy-Duty Equipment?

The RA series crossed roller bearings are designed to meet the stringent demands of heavy-duty machinery, offering a compact solution with high load ratings. These bearings are manufactured from chrome steel, ensuring durability and resistance to wear. The precision rating of P4 ensures minimal tolerance, which is crucial for applications requiring high accuracy. The RA series is suitable for environments with a wide temperature range, from -30°C to 150°C, making it ideal for both indoor and outdoor machinery.

These bearings are commonly used in applications such as machine tool spindles, precision positioning tables, and heavy-duty robotics. They are particularly beneficial in scenarios where high load capacity and precision are paramount, such as in the steel industry for rolling mill equipment or in aerospace for precision control mechanisms.

Compared to other series, the RA series stands out with its ability to handle both high dynamic and static loads, offering a balance between performance and compactness. This makes it a preferred choice for applications where space is at a premium but high performance is non-negotiable.

High load ratings accommodate heavy machinery requirements.
P4 precision rating ensures accuracy in precision machinery applications.
Wide temperature range suitability for diverse environmental conditions.

Technical Specifications and Quantifiable Benefits

STEP 1

High Load Capacity

The RA series crossed roller bearings are designed to handle high loads, both radial and axial, making them suitable for heavy-duty machinery. The load ratings are significantly higher than standard bearings, allowing for use in applications such as steel mill equipment and heavy construction machinery.

STEP 2

Chrome Steel Construction

Manufactured from high-quality chrome steel, these bearings offer exceptional durability and resistance to wear. The material's properties ensure long service life, even under the most demanding conditions, reducing the need for frequent replacements and maintenance.

STEP 3

P4 Precision Rating

With a precision rating of P4, the RA series crossed roller bearings provide high accuracy, which is essential for precision machinery applications. This precision ensures minimal tolerance, leading to improved performance and reduced errors in high-precision equipment.

STEP 4

Wide Temperature Range

These bearings are designed to operate in a wide temperature range of -30°C to 150°C, making them suitable for both indoor and outdoor applications. This temperature resistance allows for reliable operation in diverse environments, from cold storage facilities to hot industrial settings.