YRT150 Rotary Table Bearing | 150 × 240 × 40 mm

YRT150 Rotary Table Bearing for CNC Rotary Axes

The LYDL YRT150 rotary table bearing combines a 150 mm bore, 240 mm outside diameter and 40 mm height. Its two axial roller rows and one radial roller row support bidirectional axial loads, radial loads and tilting moments in rotary and indexing assemblies. Within the LYDL YRT rotary table bearing range, YRT150 offers a larger bore than YRT120 without increasing bearing height. The 165 mm inner-ring and 225 mm outer-ring fixing-hole pitch circles define a different mounting layout, requiring matching shaft-side and housing-side components.

YRT150 Dimensions and Mounting Data

The dimensions below follow LYDL’s published series table. Use the approved order drawing for tolerances, fits and detailed profiles.

Parameter	LYDL YRT150
Bore × outside diameter × height, d × D × H	150 × 240 × 40 mm
Mounting heights, H1 / H2	26 / 14 mm
Outer-ring width, C	12 mm
Inner-ring outside diameter, d1	214 mm
Inner-ring fixing-hole pitch circle, dn	165 mm
Outer-ring fixing-hole pitch circle, dm	225 mm
Inner-ring fixing holes	34 × Ø7 mm
Inner-ring counterbore diameter / depth, ds / Ts	Ø11 / 6.2 mm
Outer-ring fixing holes	33 × Ø7 mm
Precision options	P5 / P4 / P2; numerical limits agreed
Bearing-steel options	GCr15 / GCr15SiMn / 100Cr6
Lubrication	Grease; type and quantity selected for duty

The selected steel grade belongs in the order specification; the listed grades are not automatically equivalent. Fixing-hole counts must also be distinguished from retaining screws, extraction threads and lubrication features.

INA/Schaeffler YRTC150-XL Reference

The table below uses YRTC150-XL data from the cited Schaeffler TPI 120 catalog. These are brand-reference values, not LYDL performance guarantees. Obtain the LYDL configuration’s load, stiffness and operating data before final application calculations.

Reference parameter	YRTC150-XL — TPI 120
Dynamic axial load rating, Ca	128 kN
Static axial load rating, C0a	650 kN
Dynamic radial load rating, Cr	74 kN
Static radial load rating, C0r	146 kN
Continuous-operation limiting speed, nG	800 rpm under catalog conditions
Frictional torque guide value, MR	4 N·m at 5 rpm
Mass	5.4 kg
Standard fitted-bearing axial/radial runout	3 µm with ideal adjacent construction

The limiting speed uses defined mounting, lubrication and thermal conditions without external application load. It does not establish permissible loaded-duty speed. Static ratings are not allowable workpiece weights, and bearing friction alone does not size the complete drive. Profile difference: LYDL lists d1 = 214 mm; TPI 120 gives D1 max. = 214.5 mm. Check the surrounding recess and mating-part profile before assuming interchangeability. Source differences: Schaeffler’s online YRTC150-XL information reports 5.216 kg and an upper operating temperature of +120°C. The cited TPI catalog lists 5.4 kg and −30°C to +100°C. The reference table above follows TPI rather than blending these sources. LYDL’s series page separately lists −20°C to +120°C. The supplied YRT150 operating range depends on its confirmed construction and lubricant; neither brand source overrides that specification. Checking an existing assembly? Request a YRT150 drawing and technical review. Start with the model, quantity and application. Add the mounting section, loads, offsets and operating cycle when a detailed selection review is needed.

Applications and Selection Priorities

Consider YRT150 where a 150 mm shaft or hub interface and 240 mm bearing seat suit the machine layout:

• CNC rotary tables: support for workholding assemblies under fixture, workpiece and cutting loads.
• Swivel positioning axes: combined loads across changing operating angles.
• Indexing equipment: repeated acceleration, stopping and stationary process loads.
• Measuring fixtures: rotary inspection with agreed running-accuracy and deflection limits.

A larger faceplate can increase load offsets even when workpiece mass remains unchanged. Evaluate the full fixture geometry, machining forces and clamp arrangement, including both moving and stationary operating conditions.

Compare YRT120, YRT150, YRT180 and YRT200

Model	Bore × OD × height	Installation consideration
YRT120	120 × 210 × 40 mm	Smaller bore and OD at the same height
YRT150	150 × 240 × 40 mm	150 mm bore within a 40 mm axial envelope
YRT180	180 × 280 × 43 mm	Larger seat and 3 mm additional height
YRT200	200 × 300 × 45 mm	More bore space with a larger installation envelope

Compared with YRT120, YRT150 has 34 rather than 22 inner-ring fixing holes and 33 rather than 21 outer-ring fixing holes. The shared Ø7 mm hole diameter and 40 mm height do not preserve the bolt pattern or establish load-capacity equivalence.

YRTS150, YRTM150 and ZKLDF150 Options

Option	Main function	What needs checking
YRT150	Combined-load roller support	Loads, stiffness, precision and mounting
YRTS150	Higher-speed roller-bearing option listed by LYDL	Actual drawing, speed capability and lubrication
YRTM150	Angular-measurement bearing option listed by LYDL	Bearing geometry, readhead and control interface
ZKLDF150	Double-direction angular-contact ball bearing	Full mounting and performance compatibility

LYDL lists both YRTS150 and YRTM150 under typical models. Its detailed YRTS dimensional table begins at YRTS200, so the model list alone does not establish the dimensions or ratings of YRTS150. Request the specific configuration rather than assuming that adding a suffix preserves every interface. The TPI catalog gives ZKLDF150 dimensions of 150 × 240 × 40 mm and a 3,600 rpm limiting speed under its stated conditions. It is a candidate for higher-speed investigation, with a different ball-contact structure. Compare stiffness, preload, lubrication, sealing and ring profiles before substitution. Matching overall dimensions does not make ZKLDF150 a direct replacement for every YRT150 assembly.

Precision, Suffixes and Assembly

Specify numerical tolerances alongside the chosen LYDL precision option. Bearing runout and the complete axis’s angular positioning error are different acceptance criteria. Relevant Schaeffler designations include:

• XL: X-life version.
• VSP: preload arrangement for an axially supported L-section ring.
• PRL50: restricted axial and radial runout.

These suffixes describe that manufacturer’s configurations and do not automatically map to LYDL grades. Agree mounting-face tolerances, fits, fasteners and the tightening procedure against the supplied drawing. In the reference mounting table, M8 identifies extraction threads, not the fixing-screw size. Do not use it to select mounting fasteners. Verify assembled runout and rotational resistance after installation under the agreed measurement conditions.

Inspection and Wooden-Case Packaging

Inspection requirements may include boundary dimensions, fixing-hole geometry, axial and radial runout, rotational resistance and material documentation. Define the report scope and measurement conditions with the order, especially when comparing incoming inspection with installed performance. For wooden-case packing, the bearing is laid flat on cushioning and protected with rust-preventive wrapping. Suitable blocking restrains movement inside the case. Tape holds the wrapping; it is not the sole restraint for the bearing. The outer label identifies the ordered model and quantity.

YRT150 FAQ

Can YRT150 use a housing designed for YRT120 because both are 40 mm high?

The shared height helps axial-space planning, but the bearing seats and fixing patterns differ. YRT150 needs a 240 mm outside-diameter interface instead of 210 mm, together with its own pitch circles. Review the housing, shaft-side component and screw access before considering a conversion.

Does the 214/214.5 mm profile difference mean 0.25 mm radial clearance is sufficient?

No. Halving the difference between two published diameters does not define a safe clearance. One value is a nominal LYDL dimension and the other a brand maximum. Use both component tolerances, the actual recess geometry and operating displacement to establish the required clearance.

Can some of the 34 inner-ring or 33 outer-ring fixing positions be omitted?

Do not assume the assembly retains its intended stiffness or load distribution with fewer screws. Any reduced fastening arrangement requires a specific joint and bearing review. Distinguish unused functional holes from specified fixing positions before approving the mounting design.

Can a standard YRT150 become YRTM150 by adding a readhead?

A readhead alone is insufficient. Angular measurement needs a compatible encoded track or scale, mechanical integration, signal interface and calibration. An external encoder may be a separate design option, but it does not automatically convert a standard bearing into the listed YRTM150 system.

Is 240 mm the maximum permitted faceplate diameter?

No. It is the bearing’s outside diameter, not a published faceplate limit. A larger plate may be possible, but its stiffness, overhang, load offsets and mounting connection require assessment. Select using the full load geometry rather than a fixed faceplate-to-bearing diameter ratio.

Request a YRT150 Quotation

Request YRT150 pricing and a technical drawing. Send the model, quantity and intended application to begin. Include any delivery requirement or existing drawing, and mention higher-speed or angular-feedback needs so the appropriate configuration can be reviewed.

Engineering Standards and References

Reference-brand data support comparison; the approved LYDL specification defines the supplied product. Standards provide rating and tolerance frameworks, not evidence of product certification.

1. INA/Schaeffler: TPI 120 — High Precision Bearings for Combined Loads, including YRTC150-XL and ZKLDF150 tables, mounting information and operating conditions.
2. Schaeffler medias: YRTC150-XL online product information; source differences are identified above.
3. ISO 281:2007 — dynamic load ratings and rating life.
4. ISO 76:2006 — static load ratings.
5. ISO 492:2023 — radial-bearing geometrical specifications and tolerance values.