Rotary Table Bearings ARL-E®

> Product information

> Product description

> Suffix

> Tolerances

> Design of adjacent construction

> Product table

The axial-radial cylindrical roller bearing of the ARL-E® series from IBO is a roller bearing ideally suited for the application in rotary tables and rotary tables for machine tools. With the introduction of the E version, IBO offers a product that represents the state of the art in the field of rotary table bearings.

The axial-radial bearings are two-sided working rolling bearings and have a screw connection with a guiding radial rolling bearing. These ready-to-install pre-greased units have a high degree of rigidity, high load rating and work particularly precisely. These rolling bearings absorb radial and axial forces from both directions and have zero backlash tilting moments. With the E version (ARL-E®), IBO offers improved rigidity and friction torque. The bearings of the ARL-E series are suitable for operating temperatures of -30° C and 120° C.

IBO manufactures the ARL-E® series for shaft diameters from Ø80 to Ø580 mm.

Axial-radial cylindrical roller bearings of the ARL-E®) series consist of a two-sided working axial cylindrical roller bearing and a radial cylindrical roller bearing.

The axial bearing system consists of:

• two axial roller and cage assemblies
• Housing washer (outer ring)
• L-bracket (inner ring)
• Shaft washer

the axial raceway system is backlash-free (zero clearance) when installed.

The zero-clearance radial bearing system consists of a radial roller and cage assembly.

Through-holes are provided in the outer ring, in the L-bracket and in the shaft washer for fastening in the adjacent construction.

The shaft washer and L-bracket are secured with two retaining screws for the transport.

All bearings of the ARL-E® series are delivered factory-lubricated with the grease according to the specs.

The following standard designs are defined for the axial-radial cylindrical roller bearings in the E version (ARL-E):

The diameter tolerances for the ARL-E® series correspond to the tolerance class P5 and the tolerances for the running accuracy correspond to tolerance class P4 according to WN001. The following table shows the corresponding values ​​for each bore diameter:

Inner-Ø		Outer-Ø		Height H1		Height H2		Axial and Radial run out
d [mm]	Δdmp [mm]	D [mm]	ΔDmp [mm]	H1 [mm]	t H1s [mm]	H2 [mm]	t H2s [mm]	Standard [µm]	PR50 [µm]
80	–0,009	146	–0,011	23,35	±0,025	11,65	±0,02	3	1,5
100	–0,01	185	–0,015	25	±0,025	13	±0,02	3	1,5
120	–0,01	210	–0,015	26	±0,025	14	±0,02	3	1,5
150	–0,013	240	–0,015	26	±0,03	14	±0,02	3	1,5
180	–0,013	280	–0,018	29	±0,03	14	±0,025	4	2
200	–0,015	300	–0,018	30	±0,03	15	±0,025	4	2
260	–0,018	385	–0,02	36,5	±0,04	18,5	±0,025	6	3
325	–0,023	450	–0,023	40	±0,05	20	±0,025	6	3
395	–0,023	525	–0,028	42,5	±0,05	22,5	±0,025	6	3
460	–0,023	600	–0,028	46	±0,06	24	±0,03	6	3
580	–0,025	750	–0,035	60	±0,075	30	±0,03	10	5

The concept and design of the connecting construction for bearings of the ARL-E series can have a negative impact on the bearing properties, such as:

• Running accuracy
• Preload (negative clearance)
• Frictional torque behavior

The following parameters are mandatory for the connecting construction.

The figure shows the required characteristic values for the shaft seat:

The values ​​for the connecting construction of the shaft washer can be found in the table as follows:

Shaft-Ø		Tolerance		Roundness	Parallelism	Squareness
d [mm]		Δdmp [µm]		t2 [µm]	t3 [µm]	t1 [µm]
über	inkl.
50	80	0	–13	3	1,5	3
80	120	0	–15	4	2	4
120	180	0	–18	5	2,5	5
180	250	0	–20	7	3,5	7
250	315	0	–23	8	4	8
315	400	0	–25	9	4,5	9
400	500	0	–27	10	5	10
500	630	0	–32	11	5,5	11

 

The requirements for the housing washer must be designed according to the following figure:

The according values ​​for the connecting construction of the housing washer are shown in the table below:

Housing-Ø		Tolerance		Roundness	Squareness
D [mm]		ΔDmp [µm]		t2 [µm]	t1 [µm]
über	inkl.
120	180	0	–13	5	5
180	250	0	–15	7	7
250	315	0	–18	8	8
315	400	0	–20	9	9
400	500	0	–23	10	10
500	630	0	–25	11	11
630	800	0	–27	13	13
800	1 000	0	–32	15	15