High-Precision Grinding
Automated CNC grinding machines hold tight tolerances on raceways, thread forms and bore diameters across every production batch.
CATALOG
4 product lines
PRECISION
H-class / C5 grade
CERTIFIED
CE & SGS
OEM
custom specs
LINEAR MOTION BEARINGS AND LINEAR GUIDEWAY MANUFACTURING · OEM · EXPORT
Precision Linear Motion, Built to Spec
From ground ball screws to heavy-duty guideway rails, Dongfeng delivers dimensionally consistent linear motion components for demanding CNC and automation builds worldwide.
01specificationdiameter, lead, accuracy class
02steel gradeGCr15 chrome steel, 58-62 HRC
03inspectionCMM dimensional + load test report
04deliverycarton marks, CE/SGS, origin cert
manufacturing capability
Precision Engineering for Every Linear Motion Application
From miniature MGN linear guides to heavy-load HGR guideways and ground ball screws — every component is inspected against drawing before it leaves our factory.
2014
Est. year
4
product lines
CE/SGS
certifications
60+
countries served
GCr15 Chrome Steel
All bearing and guideway components use GCr15 chrome steel hardened to 58-62 HRC for predictable wear and long service life.
CNC Manufacturing
Multi-axis CNC lathes and machining centers produce consistent dimensional accuracy on shafts, nuts and support blocks at volume.
CE & SGS Certified
Products carry CE and SGS certifications with material declarations, dimensional reports and inspection documents available per shipment.
product lines
4 Linear Motion Product Lines
Linear guideways, linear guides, linear bearings, joint bearings, ball screws, plastic bearings, linear motion systems and ball screw support blocks — sourced from one factory.
6 products
Linear Guideway
Precision linear guideways including HGH, HGW, EGH, and MGN series, covering rail widths from 9 mm to 65 mm. Manufactured to DIN and JIS tolerances, suited for CNC machining centers, gantry systems, and heavy-load automation axes requiring smooth, repeatable linear travel.
6 products
Ball Screw
Rolled and ground ball screws in SFU, DFU, and BNFN configurations, with lead pitches from 2 mm to 20 mm and shaft diameters from 12 mm to 80 mm. Backlash-controlled designs for CNC routers, injection molding machines, and precision positioning tables.
7 products
Linear Bearing
Linear ball bearings in LM, LME, and LMF series, available in open and closed configurations from 3 mm to 80 mm bore diameter. Chrome steel (SUJ2) and stainless steel variants support stroke-intensive applications in packaging machinery, 3D printers, and medical equipment.
6 products
Linear Motion System
Complete linear motion modules combining ball screw drives, guideway rails, aluminium profile frames, and optional stepper or servo motor mounts. Ready-to-install actuator units for XY tables, Z-axis lifts, pick-and-place gantries, and multi-axis automation platforms.
precision components
Featured Linear Motion Components
Ground ball screws, H-class guideways and sealed linear bearings ready for CNC, automation and packaging equipment.
SBR IntegratedSBR-16-1000
SBR16 Linear Motion Guide Rail Unit with Bearing Block
SBR16 integrated linear motion guide unit combining hardened GCr15 shaft, aluminum support rail, and double-row bearing block. Pre-assembled and ready to bolt on — 7.8 kN dynamic load at 16 mm shaft diameter. Designed for DIY CNC routers, desktop engravers, and educational automation builds.
LM StandardLM-16UU
LM Series Linear Ball Bearing Bush
Chrome steel linear ball bearing bush covering shaft diameters 6–60 mm, available in open and closed types. Recirculating ball retainer design delivers smooth, low-friction linear travel for CNC, automation, and general machinery.
Rolled C7SFU-1605-500
SFU Series Rolled Ball Screw Assembly
SFU1605 rolled ball screw assembly with C7 precision grade, 5 mm lead, and pre-loaded single nut — suited for 3D printers, laser engravers, and light CNC gantry axes where cost-efficient linear motion at ±0.05 mm/300 mm positioning tolerance is sufficient.
RailHGR-20-1000
HGR Series Heavy-Duty Linear Guideway Rail
HGR Series linear guideway rails feature a 58–62 HRC induction-hardened surface and four-row ball circuit geometry, giving CNC machine tool builders the rigidity and load capacity needed under heavy interrupted cuts.
SBR Heavy-DutySBR-20-2000
SBR20 Heavy-Duty Linear Motion Guide Unit with Dual Bearing Blocks
SBR20 heavy-duty integrated linear motion guide unit with 20 mm shaft and dual bearing blocks, delivering 11.2 kN dynamic load per block (22.4 kN per axis). Standard lengths to 3000 mm. Designed for mid-size CNC routers, plasma cutting tables, and woodworking gantry machines.
LME FlangeLME-20UU-OP
LME Series Metric Flange Linear Bearing
European metric flanged linear bearing with open-type clearance slot, designed for bolt-on mounting into standard LME housings. Covers shaft diameters 8–60 mm, chrome steel construction, drop-in replacement for SKF LMEF, INA KGNOZ, and equivalent European series.
why buyers choose dongfeng
Every order backed by dimensional reports and certifications.
We ship CE and SGS certified components with material certificates, inspection reports and carton marks so your incoming QC is straightforward.
Precision tolerance
P5, P4 and P2 accuracy classes are tied to the SKU schedule and confirmed before the production slot is released - dimensional reports ship with every batch.
OEM & custom specs
Custom bore diameter, rail length, preload class and seal configuration are quoted from your drawing - samples ship in 7-10 working days.
4-line catalog
Full specification sheets with load ratings, tolerance bands, material declarations and inspection criteria are provided for every product line in the catalog.
Document pack
CE/SGS documents, material certificates, packing lists and carton marks are grouped into one buyer-ready document pack before shipment leaves the factory.
CE Cert
SGS Test
OEM Ready
Confirmed before the production slot is released — specification, material grade, tolerance class and certification scope.
quality assurance
Before shipment
Inspect the spec sheet and test report, not just the product photo.
CE CertSGS TestOEM Ready
01
Confirm drawing, accuracy class and material grade
02
Lock GCr15 steel grade, hardness and tolerance band
03
Run dimensional inspection and load test per batch
04
Release shipment with CE/SGS docs and origin cert