Define the duty
Dimensions, load direction, speed, precision, duty cycle, environment, quantity, and timing.
Precision motion · sourced by BOMForge
The bearing desk for machines that move.
Stainless and precision bearings for drones, robots, humanoids, motors, and advanced motion systems. Bring the envelope, load, speed, environment, and volume. We will work the supply base.
Sourcing desk now. Broad-line reseller coverage as the network grows.
Stainless · precision · motion
01 / Applications
Motion complexity becomes bearing demand.
Every motor, joint, rotor, gearbox, and wheel introduces another friction, stiffness, precision, or life problem. We organize the sourcing process around the machine you are building.
01 — Air
Drone bearings
Miniature, low-torque, high-speed bearings for brushless motors, gimbals, payloads, and control surfaces.
Source drone bearings → 02 — AutomationRobot bearings
Deep-groove, angular-contact, thin-section, crossed-roller, and linear motion options for joints and actuators.
Source robot bearings → 03 — Embodied AIHumanoid bearings
Compact bearing architectures for high-degree-of-freedom wrists, hands, knees, ankles, and rotary actuators.
Source humanoid bearings → 04 — PowertrainMotor bearings
Speed, noise, electrical erosion, preload, lubricant life, and thermal growth considered together.
Send motor requirements → 05 — Clean motionMedical + lab
Corrosion resistance, washdown, low particle generation, quiet operation, and controlled lubrication.
Start a sourcing request → 06 — Harsh environmentsWashdown equipment
Stainless races, seal strategy, lubricant compatibility, and realistic corrosion expectations.
Source stainless bearings →02 / Sourcing process
From motion requirement to supplier-ready brief.
Map the supply base
BOMForge searches manufacturers and distribution options against the actual requirement.
Advance the fit
We return the path forward: candidate part families, questions to resolve, and supplier outreach.
03 / Why now
Robotics can change form. It cannot eliminate motion.
Reported robot-bearing market expansion
Coverage of Morgan Stanley's February 2026 bearing research reports a rise from roughly $827 million in 2025 to $255 billion in 2050. It is a long-range projection, not a certainty—but the architecture-agnostic logic is hard to ignore.
Robotics component categories in OpenAI's RFP
OpenAI's January 2026 U.S. hardware manufacturing RFP explicitly included precision ball, roller, and harmonic bearings among six robotics component categories.
Sources: coverage of Morgan Stanley's February 2026 bearing research; Morgan Stanley, the humanoid economy; OpenAI, U.S. Hardware Manufacturing RFP. Forecasts are directional estimates and should not be read as guarantees.
04 / FAQ
Before you send the print.
Do you stock stainless bearings?
Not yet. Stainless Bearings is currently a BOMForge sourcing desk, not a stocked catalog. We match requirements to manufacturers and distributors while building broader reseller coverage.
What bearing details make sourcing faster?
Share the type or part number, bore, outside diameter, width, radial and axial loads, speed, temperature, environment, seal or shield, lubricant constraints, quantity, and required date. If any field is unknown, say so—we will help close the gaps.
Is stainless always the right material?
No. Stainless can improve corrosion resistance, but capacity, hardness, fatigue life, magnetism, lubricant, and cost still matter. A well-specified 52100 chrome steel bearing can outperform an under-specified stainless bearing in a dry, high-load application.
Can you source custom or nonstandard bearings?
Yes. Send the envelope and performance requirements. Custom work usually needs clearer volume, tooling, validation, and lead-time assumptions than an off-the-shelf cross reference.