These Cnc Machined Vacuum Pump Parts are the exact rotors, stators, end plates, and valve housings that keep your pump pulling at peak efficiency. We hold concentricity to 0.008 mm
Cnc Machined Vacuum Pump Parts | BQUQ Precision Manufacturing China
These Cnc Machined Vacuum Pump Parts are the exact rotors, stators, end plates, and valve housings that keep your pump pulling at peak efficiency. We hold concentricity to 0.008 mm TIR, surface finish
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These Cnc Machined Vacuum Pump Parts are the exact rotors, stators, end plates, and valve housings that keep your pump pulling at peak efficiency. We hold concentricity to 0.008 mm TIR, surface finish to Ra 0.4, and ship standard parts in 7 days from our Dongguan factory. Hardness up to HRC 58 for wear surfaces, and every batch is inspected with a CMM before it leaves the floor.
How We Control Rotor-to-Stator Clearance Down to 0.015 mm
Vacuum pump performance dies when clearance grows. We machine rotor OD and stator bore on the same 4-axis CNC center in one setup. That kills stacking errors. Typical clearance we hold: 0.015–0.025 mm on oil-sealed rotary vane pumps. For dry screw pumps, we go tighter—0.010 mm on the flanks. You get consistent ultimate pressure, not a pump that loses vacuum after 500 hours.
Materials and Heat Treatment for Oil-Free and Lubricated Pumps
We stock 6061-T6 aluminum for lightweight rotors, 304/316L stainless for corrosive media, and 4140 or 42CrMo4 steel for high-torque shafts. For vane pockets and lobe rotors, we heat treat to HRC 50–58 and then grind the sealing faces. Aluminum parts get hard anodizing (Class 3, 50 µm) to resist wear from carbon vanes. You pick the material; we handle the distortion control after heat treat.
Balancing and Runout Checks on Every Rotor Over 200 mm
An unbalanced rotor shakes your pump, wears bearings, and adds noise. We dynamically balance every rotor longer than 200 mm to G2.5 grade per ISO 1940. Runout on the journal and seal surfaces is checked on a V-block with a 0.001 mm resolution indicator. We reject anything over 0.008 mm TIR. That is the difference between a pump that hums and one that screams.
Inspection Before Every Shipment: CMM, Air Gauge, and Hardness Test
No exceptions. Each part goes through a 3-axis CMM for GD&T callouts, an air gauge for bore diameter, and a Rockwell tester for hardness. We send you a full inspection report with the shipment—PDF, not a vague certificate. If a critical dimension is off by 0.005 mm, we scrap it, not ship it. You want proof, not promises. We give you data.
Surface Finish Options That Affect Pump Efficiency
Rough surfaces trap gas and increase outgassing, which kills ultimate vacuum. We machine sealing faces to Ra 0.4 as standard. For high-vacuum applications, we polish to Ra 0.2 or add a lapping pass to Ra 0.1. Internal flow channels get Ra 0.8 to reduce friction losses. These are not cosmetic choices—they change your pump’s pumping speed by up to 8% on the same motor.
Lead Time and Batch Flexibility for Prototypes and Production
Prototype Cnc Machined Vacuum Pump Parts ship in 7 days. Production runs of 50–5000 pieces take 15–20 days. We run lights-out CNC cells 24/5, so your order is not waiting in a queue. No MOQ—order one part to test or a thousand for assembly. Tooling is free for standard sizes. For custom geometries, we quote a one-time setup fee and return it after 500 pieces.
Threads, O-Ring Grooves, and Ports Machined to Vacuum Standards
NPT, BSPP, and SAE threads are cut with single-point tooling, not taps, for leak-free sealing. O-ring grooves are machined to AS568A dimensions with a dovetail option for O-rings that stay put during assembly. Ports are deburred and chamfered internally to prevent particle generation inside the pump cavity. We know that a single burr in a vacuum line can cause a catastrophic leak. We eliminate that risk.
Send your drawing today. Get a firm quote within 12 hours. Email sc@bquq.com or WhatsApp +86 13713157787. Precision manufacturing, made in China, with no MOQ—your vacuum pump runs better on our parts.
