Dongfeng Bearing
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.
Key Features
- Complete integrated unit: shaft + aluminum support + bearing block pre-assembled and ready to install
- GCr15 chrome steel shaft induction-hardened to HRC 58–62 with aluminum support rail eliminating deflection
- Double-row bearing block delivers 7.8 kN dynamic load — 60% higher than single-row LM pillow blocks
- Pre-drilled mounting holes every 50 mm on aluminum support — direct bolt-on to T-slot frames
- Standard lengths up to 2000 mm with custom lengths available to 4000 mm
- Designed for DIY CNC routers, desktop engravers, and educational automation builds
Common Sourcing Problems & How We Solve Them
Buyer Pain Points
- Inconsistent dimensional tolerances across batches cause machine downtime and re-work costs
- Suppliers unable to provide material certs, inspection reports or CE documentation for customs clearance
- Long lead times and high MOQ requirements make sample evaluation and first orders difficult
Dongfeng Solution
- ISO 9001:2015 process controls with CMM dimensional inspection on every production batch
- Full documentation package: material cert, SGS test report, CE declaration, packing list on request
- Flexible MOQ from 1 piece for samples; bulk order lead time 15–20 working days
Performance Data
- 10+ years of linear motion component manufacturing — 50+ export markets served
- Hardness tested to HRC 58–62; dimensional tolerance held to JIS / ISO / DIN standard grade
- CE & SGS certified; ISO 9001:2015 quality management system in production
Utility record
| Unit Series | SBR 12 / 16 / 20 / 25 / 30 |
|---|---|
| Shaft Diameter | 16 mm |
| Shaft Material | GCr15 Chrome Steel, HRC 58–62 |
| Support Rail | Anodized Aluminum 6063-T5 |
| Block Type | Double-row ball bearing, aluminum housing |
| Dynamic Load (SBR16) | 7.8 kN |
| Static Load (SBR16) | 12.0 kN |
| Max Standard Length | 2000 mm (custom 4000 mm) |
| Mounting Holes | Every 50 mm along rail |
| Block Bolts | 4× M5 top-face |
Application fit notes
User Pain Point + Solution + Data
DIY CNC router builders, small workshop owners, and educational institutions need linear motion systems that combine shaft support, bearing, and carriage into one ready-to-install unit — without sourcing separate rails, bearings, and pillow blocks that may not match dimensionally. The SBR16 solves this by integrating a hardened steel shaft, an aluminum support rail, and a double-row SBR bearing block into a complete linear guide unit. The SBR16 supports shaft diameter 16 mm with 7.8 kN dynamic load capacity, pre-assembled and ready to bolt onto aluminum extrusion frames or flat surfaces. This unit eliminates the alignment, sourcing, and assembly complexity that plagues component-level linear motion builds.
Complete Specifications
| Parameter | Value |
|---|---|
| Unit Series | SBR 12 / 16 / 20 / 25 / 30 |
| Shaft Diameter | 16 mm |
| Shaft Material | GCr15 Chrome Steel, HRC 58–62 (induction hardened) |
| Support Rail Material | Anodized aluminum extrusion (6063-T5) |
| Bearing Block Type | Double-row ball bearing with aluminum housing |
| Dynamic Load (SBR16) | 7.8 kN |
| Static Load (SBR16) | 12.0 kN |
| Max Standard Length | 2000 mm (custom up to 4000 mm) |
| Mounting Holes | Every 50 mm along support rail |
| Block Mounting Bolts | 4× M5 top-face |
| Weight (per meter + 1 block) | 1.2 kg/m + 0.18 kg/block |
Product Advantages
Complete Integrated Unit
Shaft, aluminum support rail, and bearing block arrive pre-assembled. No separate component sourcing, no alignment jigs, no shaft straightness verification — bolt the unit to a flat surface and the axis is functional. Reduces DIY CNC build time from days to hours.
Ready to InstallHardened Chrome Steel Shaft
GCr15 shaft induction-hardened to HRC 58–62 at the raceway surface. The aluminum support rail eliminates shaft deflection under load — the shaft rides on the support profile, not in free span. This allows longer unsupported distances versus bare shaft + pillow block configurations.
HRC 58–62Aluminum Support Rail
6063-T5 anodized aluminum extrusion supports the full shaft length. Pre-drilled mounting holes every 50 mm allow direct bolting to T-slot aluminum frames, steel plates, or wooden tables. No additional machining needed for standard configurations.
50 mm PitchDouble-Row Bearing Block
The SBR bearing block uses two rows of recirculating balls in an aluminum housing, delivering 7.8 kN dynamic load at SBR16 — 60% higher than single-row LM pillow blocks of the same shaft diameter. The block includes mounting holes for direct carriage attachment.
7.8 kNEnterprise Strength
Xiamen Dongfeng Bearing Mechanical & Electrical Co., Ltd.Ltd. — established 2014, 10+ years specializing in linear motion system manufacturing. Our 5,000 m² Xiamen facility operates 12 production lines with 200+ employees, including a dedicated linear motion system assembly cell producing SBR, TBR, and SBS series at 25,000+ units per month.
Certifications: ISO 9001:2015, CE conformity, SGS factory audit passed. Export markets: 50+ countries including USA, Germany, UK, Australia, India, and Brazil. Partners: Supplying DIY CNC kit manufacturers, educational robotics companies, and small-format engraver builders.
Pre-sales: Shaft length and block count configuration within 4 hours. After-sales: 18-month warranty, installation guidance. Customer case: Supplied 5,000 SBR16-1000 units to a US-based DIY CNC kit manufacturer — 0.04% defect rate over 2 years, zero shaft hardness-related warranty claims.
Manufacturing, Exhibition & Quality Controltrol
Production Process & Quality Assuranceance
Process: GCr15 raw bar → turning (shaft profile) → induction hardening (HRC 58–62) → precision grinding (shaft surface Ra ≤0.4 µm) → aluminum extrusion cutting and drilling → bearing block machining → ball circuit assembly → unit pre-assembly and alignment check → packaging.
Quality testing: Shaft hardness verified per batch (Rockwell tester), shaft straightness ≤0.05 mm/m, block running smoothness tested 100% on test shaft, mounting hole position verified on gauge. Exhibitions: Exhibited at Maker Faire Shenzhen, TCT Asia (3D printing/additive), and education technology expos to reach DIY and educational market builders.
FAQ
What is the MOQ for SBR16 linear guide units?
MOQ is 50 sets (1 rail + 1 block per set). Mixed lengths accepted with 50-set minimum per length. For custom lengths above 2000 mm, MOQ is 30 sets. Sample sets of 2–5 units available for qualified buyers.
What are the shipping options and lead time?
FOB Xiamen. In-stock standard lengths (500–1500 mm): 7–10 business days. Custom lengths (1600–4000 mm): 15–25 business days. Express courier (DHL/FedEx): 5–7 days for samples. Sea freight: 25–35 days to Europe, 18–25 days to USA.
How are SBR units packaged for shipping?
Each unit (rail + block) is anti-corrosion oiled, wrapped in foam, and packed in individual cartons. Long rails (1500+ mm) ship in triangular cardboard tubes to prevent bending. Bulk orders use wooden pallets with stretch wrap. Custom packaging per buyer requirements accepted.
What payment methods do you accept?
T/T (30% deposit, 70% before shipment). L/C at sight for orders above USD 15,000. PayPal for sample orders under USD 2,000. Western Union for small orders on request.
Can I get a sample unit for testing?
Yes. Sample SBR16-500 units (500 mm rail + 1 block) are available with buyer covering shipping. Sample cost is credited toward bulk orders of 100+ sets. Provide your required length and block count to arrange.
Do you offer OEM branding and custom rail lengths?
Yes. Custom laser-engraved logo on bearing block available for 100+ set orders. Custom rail lengths up to 4000 mm available for 30+ set orders. OEM packaging with buyer branding for 300+ set orders. Custom mounting hole pitch available for 500+ set orders — share your drawing.
Request a Quote for SBR16 Guide Units
Send your required rail length, block count per rail, and quantity — we reply within one business day with pricing and lead time.
Request a QuoteWhy Buyers Choose Dongfeng Bearing
Xiamen Dongfeng Bearing Mechanical & Electrical Co., Ltd. — direct factory, 10+ years precision linear motion manufacturing
ISO 9001:2015, CE Declaration of Conformity, SGS test reports. Documentation available for EU and North American import requirements.
12 precision grinding and CNC machining lines; monthly output 500,000+ pieces across linear bearing and guideway series.
Germany, USA, Japan, South Korea, India, Southeast Asia and 40+ other countries. FOB Xiamen with DHL / FedEx / sea freight options.
Technical selection support before order. Dimensional drawing, material cert and inspection report with shipment. 12-month warranty on manufacturing defects.
Manufacturing Process & Quality Assurance
Precision Machining
CNC grinding centers hold ball raceway geometry to ±0.003 mm. Induction hardening targets contact zones to HRC 58–62 without embrittling the full body.
CMM Dimensional Inspection
Every batch passes coordinate measuring machine (CMM) verification. Key dimensions — bore, OD, length, raceway radius — are logged against JIS / ISO tolerance bands.
Certification & QC
ISO 9001:2015 controls govern raw material intake, in-process check, and final inspection. SGS and CE documentation issued on request for each shipment.
Trade Shows & Partnerships
Regular exhibitor at Canton Fair and Hannover Messe. Established supply partnerships with automation integrators and machine tool OEMs across Europe and Asia.
