Import 25mm Linear Guide Size Ser-Gd25 — Buy in wholesale FOB from Supplier in China

The Ser-gd25 is a 25mm common-size linear guide rail from Shandong Sair Mechanical Guide Co., Ltd., based in Jinan City, Shandong Province. This rail width sits within the supplier's standard common linear guide portfolio, which spans 14mm through 45mm. The Ser-gd25 designation indicates a standard-series block and rail assembly suited to general automation and machine-tool retrofit applications. The supplier also lists miniature guides (5mm to 15mm) and cross-roller variants (25mm to 35mm), confirming the gd25 as a mid-load, common-duty product rather than a miniature or heavy-duty series.

Standard rail material for this grade is through-hardened bearing steel (typical GCr15 or equivalent), induction hardened to HRC 58-62 on raceway surfaces. The 25mm rail height and block width follow ISO-standard envelope dimensions, allowing drop-in replacement with major Japanese and European brands. Ball circuits inside the block are typically four-point contact Gothic-arch raceways, supporting equal load in all directions. Preload is typically light or medium for general automation; the buyer should specify preload class and accuracy grade (N, H, or P) when ordering. Standard rail lengths are cut from stock bar and end-machined for mounting-hole patterns.

Typical buyers include CNC machine builders, 3D-printer manufacturers, automated dispensing-system integrators, and semiconductor handling-equipment firms. The 25mm size balances stiffness and cost for XY gantry systems and Z-axis lifts to about 1,500mm travel. Trade terms, MOQ, and lead time are not stated in the source data and must be confirmed directly with the supplier. The company expresses interest in distributor and large-volume customer relationships, suggesting volume pricing may be negotiable.

Shandong Sair Mechanical Guide Co., Ltd. operates from Jinan City, Shandong Province, China, postal code 250101. The supplier's listed trust tier is Harbor, and both response rate and average response hours show 0.00 in the available data. This absence of response metrics means buyers should expect to initiate contact and may need follow-up to secure quotations or technical clarification. The company positions itself as a manufacturer rather than a trader, with a product matrix covering common, miniature, and cross-roller linear guides plus ball screws.

The source description states the company seeks large customers and agents worldwide, indicating a B2B wholesale and distribution-oriented business model. No employee count, revenue figure, ISO certification, or specific factory capacity is provided in the data. Buyers should verify manufacturing capability, quality-system certification, and export experience directly. The attached catalogue mentioned in the source has not been transcribed here, so full model-range details beyond the sizes listed remain unavailable without direct supplier contact.