The XV100 crossed roller bearing is a sealed, grease-lubricated precision bearing designed for rotary systems requiring a 100 mm bore, substantially increased load capacity and direct outer-ring mounting.
Dimensions: 100 mm bore × 170 mm outside diameter × 23 mm overall width
Mounting interface: 16 counterbored fixing holes on a 150 mm pitch circle
Fixing-hole dimensions: 9 mm through-hole, 15 mm counterbore and 8.5 mm counterbore depth
Ring structure: Solid outer ring with a circumferentially split inner ring
Load capability: Supports radial, axial and overturning-moment loads
Basic dynamic ratings: 54 kN axial and 34.4 kN radial
Basic static ratings: 163 kN axial and 65 kN radial
Standard configuration: Sealed on both sides, grease lubricated, approximately 2.31 kg
Reference limiting speeds: 326 rpm with preload and 653 rpm with clearance
XV100 represents a major capacity step above XV90. Its larger ring section provides approximately 54% higher dynamic ratings and 46% higher static ratings, making it suitable for more heavily loaded robot positioners, gearbox outputs, rotary fixtures and industrial automation systems.
The solid outer ring allows direct screw mounting, while the split inner ring enables clearance or preload adjustment through an appropriate precision locknut arrangement.
XV100 Crossed Roller Bearing Overview
The XV100 crossed roller bearing measures 100 × 170 × 23 mm and provides a substantial increase in load capacity over the smaller XV models. Its solid outer ring has 16 counterbored fixing holes on a 150 mm pitch circle for direct mounting to a rigid adjacent structure.
A circumferentially split inner ring allows clearance or preload adjustment through a suitable precision locknut arrangement. Crossed cylindrical rollers enable the bearing to support radial loads, axial loads in both directions and overturning moments within one compact position.
XV100 is suitable for heavily loaded rotary axes requiring a 100 mm central opening, increased rigidity and a stronger mounting interface. Other dimensions can be found in the XV Series Cross Roller Bearings range.
The listed ratings are catalogue-reference values, not maximum permissible application loads. Final selection must include the combined load spectrum, moment load, speed, duty cycle, preload, lubrication and mounting rigidity.
A Major Capacity Step Above XV90
XV100 introduces a wider 23 mm section and a larger fixing-hole system. It is intended for applications where XV90 does not provide sufficient capacity or mounting strength.
The mass increases from 1.29 kg to 2.31 kg. Designers should therefore consider both the higher capacity and the effect of additional rotating mass.
Direct Mounting and 150 mm PCD
The solid outer ring includes 16 counterbored fixing holes equally distributed on a 150 mm pitch circle.
Each fixing position has:
9 mm through-hole
15 mm counterbore
8.5 mm counterbore depth
A 9 mm through-hole is commonly associated with clearance for an M8-class fastener. The actual screw standard, head dimensions, strength grade, thread engagement and tightening torque must be confirmed from the approved mounting drawing.
The surrounding flange should support the outer-ring face continuously. Adequate material must remain around the threaded holes and outside edge to prevent local deformation.
Recommended assembly practice includes diagonal tightening in several stages, rotation checks during tightening and final measurement of runout and rotational resistance.
100 mm Bore and Machine Integration
The 100 mm central opening can accommodate a hollow shaft, rotary union, drive shaft, wiring, pneumatic services or other centrally routed components.
The full bore is not normally available because the installation must also allow for:
Shaft-wall thickness
Precision locknut
Inner-ring retaining features
Cable or hose protection
Assembly clearance
Required shaft strength
For preliminary layout, the nominal radial envelope is: (170 mm outside diameter − 100 mm bore) ÷ 2 = 35 mm This is an installation reference only and does not represent the actual ring-wall thickness.
For more information about ring structures and load directions, see the Cross Roller Bearings Design and Selection Guide.
XV100 Compared with RE10020
XV100 and RE10020 both have a nominal 100 mm bore and a split-inner-ring concept, but they differ significantly in size and mounting method.
The RE Series Cross Roller Bearings may be considered when a smaller radial envelope is more important than direct outer-ring mounting.
Matching bore diameters do not establish interchangeability. The outer diameter, width, shoulders, retention method, preload and ratings must all be verified.
Typical XV100 Applications
Application
XV100 Advantage
Main Selection Check
Robot positioners
Higher capacity and direct mounting
Payload offset and emergency-stop moment
Gearbox output axes
Combined-load support
Gear forces and shaft alignment
Welding manipulators
Stronger static ratings
Shock, heat and duty cycle
CNC rotary fixtures
High rigidity in one bearing
Cutting loads and mounting deformation
Servo rotary units
Preload adjustment
Acceleration and running temperature
Inspection turntables
Stable moment support
Runout and torque variation
Automated handling systems
100 mm hollow-axis space
Reversing frequency and cable routing
Medical equipment
Compact combined-load support
Lubricant and environmental requirements
Need an XV100 Selection Review?
Provide the radial load, axial load, overturning moment, speed, duty cycle and mounting drawing. The LYDL Engineering and Sales Team can review the required configuration before quotation.
Load, Speed and Preload
The crossed roller arrangement supports combined loads, but the bearing and surrounding components must be evaluated as one system.
For an offset force, the preliminary applied moment is: M = F × L The calculation should also include acceleration, emergency stopping, impact, gear or belt forces, mounting deformation and an appropriate safety factor.
The reference limiting speeds are:
326 rpm with preload
653 rpm with clearance
These are not guaranteed continuous operating speeds. Preload, grease, seal friction, external loading and heat dissipation may require a lower operating speed.
Common catalogue references include:
Standard clearance: Lower-friction configuration
RL0: Reduced-clearance reference
VSP: Preloaded-bearing reference
RR: Corrosion-resistant reference
Suffix meanings can vary by manufacturer. The approved drawing must confirm the actual preload, clearance, lubrication, accuracy and sealing requirements.
Inspection and Installation
Depending on the agreed specification, XV100 inspection may include:
Boundary-dimension measurement
Raceway geometry and roundness inspection
150 mm fixing-hole PCD verification
Hole and counterbore measurement
Hardness and surface-finish inspection
Radial and axial runout measurement
Clearance or preload verification
Starting and running torque testing
Seal, grease and packaging inspection
During installation:
Clean the bearing and mounting components.
Verify the shaft, flange and hole pattern.
Support the solid outer ring uniformly.
Install the split inner ring with the specified locknut.
Adjust clearance or preload gradually.
Tighten outer-ring screws diagonally in stages.
Check rotation throughout the tightening process.
Measure final runout, torque and temperature.
Do not strike the bearing or transmit installation force through the rolling elements.
Lubrication, Environment and Packaging
The standard catalogue configuration is sealed on both sides and grease lubricated. Grease selection should consider speed, load, preload, temperature, torque and maintenance interval.
The catalogue reference temperature range is −30°C to +80°C. Vacuum, cleanroom, low-temperature, washdown or corrosive environments require separate confirmation.
XV100 bearings can be supplied with:
Individual protective packaging
Batch or serial-number identification
Inspection documentation
Customer-specific marking
OEM labels
Reinforced export cartons
XV100 Frequently Asked Questions
Why is XV100 considered a capacity step rather than a simple size increase?
Compared with XV90, XV100 uses a wider section, larger outside diameter and stronger mounting holes. Its dynamic ratings rise by approximately 54% and static ratings by about 46%.
Can an XV90 mounting structure be enlarged to accept XV100?
A simple machining enlargement is normally insufficient. XV100 requires a 170 mm outside diameter, 150 mm PCD, 23 mm width and larger fixing holes. Flange strength and edge distance must be recalculated.
Are the 9 mm fixing holes intended for M8 screws?
They commonly provide clearance for M8-class fasteners, but the screw standard, head size, grade, thread depth and torque must be confirmed against the approved drawing.
Is the 100 mm bore suitable for a rotary union?
It can provide useful installation space, but the union body, shaft wall, locknut and service connections must fit within the complete assembly. The nominal bore alone does not confirm compatibility.
How does the higher XV100 mass affect a servo axis?
The effect depends on which ring rotates and how the mass is distributed. The additional rotational inertia should be included in motor sizing, acceleration and stopping calculations.
Why is the clearance limiting speed approximately twice the preloaded speed?
Preload increases internal contact force, friction and heat. The permissible operating speed is therefore generally lower than for a clearance configuration.
Should the mounting flange extend beyond the 170 mm outside diameter?
The flange should provide continuous support and sufficient material around the fixing holes. Its final diameter depends on edge distance, thread engagement, load and material strength.
Can one XV100 replace a pair of angular-contact ball bearings?
A crossed roller bearing can sometimes simplify a multi-bearing arrangement, but replacement is not automatic. Life, moment rigidity, torque, speed, mounting and lubrication must be recalculated.
What is most important when checking static moment safety?
The equivalent axial load, applied overturning moment, raceway limits, fixing-screw capacity and deformation of the surrounding structure must be evaluated together.
Why Choose LYDL for XV100 Bearings?
LYDL supports precision crossed roller bearing projects for robotics, machine tools, rotary fixtures and industrial automation.
Available support includes:
Drawing and mounting review
Clearance or preload configuration
Lubrication selection
Runout and torque inspection
Prototype and production quantities
Customer-specific marking
Inspection reports
OEM and export packaging
Final specifications are confirmed through the approved drawing, quotation or technical agreement.
HIWIN – Crossed Roller Bearing Product Information
Third-party names, model references and standards are included only for technical identification and engineering reference. They do not imply affiliation, endorsement or guaranteed interchangeability. LYDL specifications are governed by the approved drawing, quotation and technical agreement.
