Rolling bearings can 'crawl' at very low speed due to stick-slip. Hydrostatic support has no solid contact, so motion stays smooth from near-zero rpm—ideal for creep-feed grinding and indexing.
На малых скоростях роликовые подшипники 'ползут' (stick-slip), давая рывки и портя текстуру.
Нет контакта — нет порога трения покоя. Плёнка поддерживает непрерывно, движение гладкое от первого микрона.
Силовое шлифование, деление стола, сверхточное контурное движение, калибровка.
Без ползания — чище поверхность, точнее деление, нет сложной компенсации.
Tốc thấp, ổ lăn 'bò' (stick-slip), giật và hỏng bề mặt.
Không tiếp xúc — không ngưỡng ma sát tĩnh. Màng nâng đỡ liên tục, mượt từ micron đầu.
Mài ngậm sâu, chia độ bàn, contour siêu chính xác, hiệu chuẩn.
Không bò — mặt đẹp, chia độ chuẩn, bỏ thuật toán bù phức tạp.
À très basse vitesse, les roulements présentent du stick-slip (rampement) : mouvement saccadé qui ruine la surface.
Sans contact, pas de seuil de frottement statique. Le film porte en continu, le mouvement reste lisse dès le premier micromètre.
Meulage à avance lente, division du plateau, contour ultra-précis, étalonnage.
Sans rampement, meilleure surface et division exacte, sans compensation complexe.
Bei sehr niedriger Drehzahl zeigen Wälzlager Stick-Slip (Kriechen): ruckartige Bewegung, die die Oberfläche ruiniert.
Ohne Kontakt gibt es keine statische Reibschwelle. Der Film trägt stetig, die Bewegung bleibt von der ersten Mikrometerschritt glatt.
Creep-Feed-Schleifen, Teilung des Drehtisches, Ultrapräzisionskonturen, Kalibrierung.
Kriechfreie Langsamfahrt verbessert Oberfläche und Wiederholteilung ohne aufwändige Kompensation.
At very low speed, rolling bearings can exhibit stick-slip (crawl): the element alternately sticks and slips, producing jerky, uneven motion that ruins fine surface texture and indexing accuracy.
With no solid contact, there is no static-friction threshold to overcome. The oil film provides continuous, velocity-independent support, so motion remains smooth from the first micron of travel to full speed.
Crawl-free low-speed motion improves surface finish, repeats indexing accurately, and removes the need for complicated compensation algorithms.
