POM ball transfer unit PVP series

plasticstainless steelpolymer

Product overview
Planeveyor units for cleanroom applications require material selection and dedicated cleaning depending on operating environments (wear, heat, static control, vacuum, etc.) used in the manufacturing of glass substrates and similar components. ATEC CO., LTD. performs assembly and packaging in clean booths and clean benches. Parts are cleaned with pure water using degreasing and dedicated cleaners; resin powder produced during ball processing is removed to the limit.

Series purpose and functionality
The PVP series is designed for conveying and precise positioning with minimized risk of damaging glass surfaces by selecting appropriate engineering plastics. Compared with conventional plastic-pin supports, the series is lighter and reduces dust generation. Optional dust-suction holes can aspirate fine particles that enter internal cavities (available for 20B types).

Flow chart
PVP series — cleaning and assembly flow chart: cleaning and assembly processes are applied to minimize particulate generation and ensure cleanroom compatibility.

Properties of resin

• POM (Polyacetal) — General-purpose engineering plastic with high machinability, balanced mechanical properties and continuous use temperature around 80 °C. Sensitive to strong acids; flammable.
• UHMWPE (Ultra high molecular weight polyethylene) — Excellent abrasion resistance (in some cases surpassing stainless steel). Best impact resistance among common plastics; good water resistance. Continuous use temperature around 80 °C.
• PEEK (Polyetheretherketone) — High heat resistance (continuous use up to 150 °C), excellent wear and abrasion resistance, minimal gas emission.
• PI (Polyimide) — High-temperature resin (100% polyimide). Continuous use up to 250 °C; short-term limit up to 450 °C. Excellent wear resistance and chemical resistance to organic solvents, grease and oil.
• D (Dielectric type, antistatic) — Antistatic (black) grades with surface resistivity approximately 10^3–10^7 Ω to address ESD/static; body and small balls use dielectric resin or stainless steel combinations.

Test specification (PVP20B example)
Rising dust test: measurement type — PVP20BJ-JJ (Main ball: POM / Small ball: POM / Body: POM). Endurance running test: measurement type — PVP20BU-JJ (Main ball: UHMWPE / Small ball: POM / Body: POM). Test load — 14.7 N (1.5 kgf). Running speed — 300 mm/s. Contact surface — glass piece used.

Environment in the clean box (test conditions)
Dust generation when not running — PARTICLE 0.3 µm: 2 pieces; PARTICLE 0.5 µm: 0 pieces. Continuous operation of box fan — airflow: 11.0 m3/min. Measuring equipment — AIR BORNE PARTICLE COUNTER RION HHPC-2 (sampling 10 minutes every 1 km run). Running time — continuous operation 10 hours/day for 30 days.

PVP10B Type — typical specifications
Model: PVP10BJ-SJ — Recommended load: 4.9 N (0.5 kgf) — Recommended tightening torque: 1.3–1.6 N·m — Material: resin body — Use direction: upward/downward. Model: PVP10BP-SS — Recommended load: 4.9 N (0.5 kgf) — Recommended tightening torque: 11.2–13.7 N·m — Material: SUS body — Use direction: upward/downward. Model: PVP10BU(D)-SUS — Recommended load: 4.9 N (0.5 kgf) — Recommended tightening torque: 11.2–13.7 N·m — Material: combination — Use direction: upward/downward. Model: PVP10BP(D)-SJ(D)S — Recommended load: 4.9 N (0.5 kgf) — Recommended tightening torque: 11.2–13.7 N·m — Material: conductive combination — Use direction: upward/downward.

PVP16B Type — typical specifications
Model: PVP16BJ-SJ — Recommended load: 8.8 N (0.9 kgf) — Recommended tightening torque: 1.3–1.6 N·m — Material: resin body — Use direction: upward/downward. Models: PVP16BU-SS / PVP16BU-SUS / PVP16BU(D)-SU(D)S — Recommended load: 8.8 N (0.9 kgf) — Recommended tightening torque: 11.2–13.7 N·m — Materials vary (SUS, combinations, conductive combinations) — Use direction: upward/downward.

PVP20B Type — typical specifications
Model: PVP20BJ-JJ — Recommended load: 14.7 N (1.5 kgf) — Recommended tightening torque: 1.3–1.6 N·m — Material: resin body — Use direction: upward/downward. Models: PVP20BP-SS / PVP20BV-SUS / PVP20BP(D)-SJ(D)S — Recommended load: 14.7 N (1.5 kgf) — Recommended tightening torque: 11.2–13.7 N·m — Materials vary (SUS, combinations, conductive combinations) — Use direction: upward/downward.

PVPR (Main ball lock type) — key points
The PVPR main ball lock uses air pressure to fix the main ball and prevent positional displacement of the workpiece (e.g., glass substrate). The main ball normally rolls as in the PVP series. Dust suction specification is available for 20B types. Typical PVPR10B recommended load: 4.9 N (0.5 kgf); pressure range for lock: 0.4–0.5 MPa. Example weights: resin body ~8 g; SUS body ~33 g.

PVPA (Resin molded type) — key points
PVPA is a cost-reduced, general-purpose cleanroom-compatible Planeveyor with molded body parts (POM molded parts based on PVP20B designs). PVPA lineups are specified to allow dust extraction. Example: PVPA20B — Recommended load: 14.7 N (1.5 kgf); weight: 9 g; use direction: upward.

PVP30JC — key points
Recommended use load: 78.4 N (8 kgf). General-purpose type with POM molded body parts for cost reduction. Example materials: main ball / small balls / body / cover — POM.

Characteristics / technical specifications

• Series name: PVP series (Cleanroom-compatible Planeveyor)
• Manufacturer / Brand: ATEC CO., LTD.
• Materials available: POM, UHMWPE, PEEK, PI (polyimide), dielectric antistatic grades and combinations with SUS
• RoHS compliant (as indicated)
• Available options: main ball lock mechanism (PVPR), dust suction hole (20B types), material variations for main and small balls
• Test conditions example: test load 14.7 N (1.5 kgf), running speed 300 mm/s, long-term endurance test: continuous running 10 hours/day for 30 days
• Example recommended load capacities by type: PVP10B ≈ 4.9 N (0.5 kgf); PVP16B ≈ 8.8 N (0.9 kgf); PVP20B ≈ 14.7 N (1.5 kgf); PVP30JC ≈ 78.4 N (8 kgf)
• Recommended tightening torque examples: 1.3–1.6 N·m (resin types) and 11.2–13.7 N·m (SUS/combination types)
• PVPR pressure range for lock mechanism: 0.4–0.5 MPa (example)