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| PRECISION BALL SCREW SERIES
1605 BALL SCREWØ16MM SHAFT × 5MM LEAD High-accuracy rolled / ground ball screw designed for precise rotary-to-linear motion conversion. Manufactured in-house for CNC machines and industrial automation equipment.
 16mm SHAFT DIA. 5mm LEAD 7.4 kN DYNAMIC LOAD GCr15 STANDARD MATERIAL
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01 / Product Overview
The 1605 ball screw is a core linear transmission component widely used in industrial automation. The designation "1605" means a nominal shaft diameter of 16 mm and a lead of 5 mm per revolution.
Inside the nut, steel balls recirculate between the screw shaft and the ball nut, converting rotary motion into precise linear motion with mechanical efficiency of up to 90% - compared to roughly 30–40% for conventional sliding lead screws.
C7 rolled: ±0.05 mm per 300 mm travel; C5 ground: ±0.018 mm per 300 mm travel
Backlash below 0.05 mm standard; preloaded versions below 0.02 mm
Dynamic load rating Ca = 7.4 kN, static C₀a = 12.0 kN (typical SFU1605)
Cross-compatible with HIWIN R16-5B1, THK BNK1605, PMI FSES1605 mounting interfaces
Thread accuracy and runout are measured per batch before dispatch.
02 / Technical Specifications
1605 BALL SCREW SPECIFICATIONS
| Model | SFU1605 (Standard) - compatible with HIWIN R16-5B1 / PMI FSES1605 |
| Nominal Diameter | 16 mm |
| Lead | 5 mm / rev |
| Ball Circulation | 2.78 mm |
| Accuracy Class | C7 (rolled, ±0.05 mm/300 mm) standard; C5 (ground, ±0.018 mm/300 mm) on request |
| Shaft Material | GCr15 alloy steel (standard), induction hardened to HRC 58–62; SUJ2 and stainless steel 304/316 available |
| Surface Finish | Black oxide / anti-rust oil; ground shaft thread |
| Preload | ZF0 (standard), ZF1 / ZF2 on request |
| Max. Speed | Up to ~3,000 rpm (depends on shaft length and support) |
| Shaft Length | Customizable, typically 200 – 3,000 mm |
| End Machining | Standard or customer-drawn end journals (matched to BK12/BF12 support units) |
| MOQ | 1 piece for standard stock; 10–50 pcs for custom ground / C5 versions |
| LEAD TIME | 3–5 days for stock items; 2–4 weeks for custom machined / ground versions |
* Values above are typical for the standard SFU2005 series. Exact dimensions, dynamic load rating and critical speed depend on nut type, shaft length and end support configuration. Contact us with your drawing for a confirmed specification.
03 / Why Choose 2005
Core Advantages
High Precision
C5 ground versions hold ±0.018 mm per 300 mm travel; C7 rolled versions hold ±0.05 mm per 300 mm. Induction-hardened raceways to HRC 58–62.
LOW BACKLASH
Standard backlash below 0.05 mm. Preloaded ZF1/ZF2 options reduce it below 0.02 mm for bidirectional positioning without play.
HIGH RIGIDITY
Ca = 7.4 kN dynamic, C₀a = 12.0 kN static load rating. GCr15 hardened shaft and robust flange nut withstand high axial loads.
LONG SERVICE LIFE
Mechanical efficiency up to 90% vs 30–40% for sliding screws. Hardened ground raceways extend L₁₀ life under continuous duty.
04 / Applications
Industries We Serve
CNC Machines
Automation
Laser Equipment
New Energy
Medical Devices
Packaging
Robotics
Precision Instruments
05 / PRODUCT RANGE
OUR PRODUCT LINEUP
P-01
BALL SCREWS
Rolled and ground ball screws, with standard or custom nuts. The 1605 model on this page is part of our SFU series.
SFU / SFI Series C5 / C7 Accuracy
P-02
LINEAR GUIDE RAILS
High-rigidity linear guide rails and carriages for smooth, low-friction linear motion in high-speed automation.
HGR / EGR Series Various Sizes
P-03
LINEAR SHAFT ASSEMBLIES
Induction-hardened and precision-ground linear shafts, available with or without support blocks, custom lengths and end machining.
HRC 58–62 Custom Length
P-04
SCREW SUPPORT UNITS
BK/BF fixed-side and FK/FF supported-end units for ball screw shaft mounting, matching standard shaft diameters.
BK / BF FK / FF
P-05
BALL SPLINES
Precision ball splines for simultaneous rotary and linear motion, used in indexing and robotic applications.
Rotation + Linear Low Torque
P-06
TRANSMISSION ACCESSORIES
Ball screw nuts, housings, couplings, bearing blocks and other transmission accessories to complete your linear motion system.
Nuts Couplings Bearings
06 / About the FactoryLISHUI JIESHENG TRANSMISSION
Lishui Jiesheng Transmission Co., Ltd. is located in Lishui, Zhejiang Province, China. We are a manufacturer specializing in the R&D, production and sales of linear transmission components.
Our core product range includes ball screws, linear guide rails, linear shaft assemblies and various transmission accessories. Our factory has been audited under ISO 9001 quality management, with in-house grinding and inspection processes.
 In-house machining workshop - vertical machining centers, green epoxy floor. |
07 / Manufacturing & Quality
From Grinding to Dispatch
Precision Grinding
Thread grinding machines finish screw shafts to micron-level accuracy, ensuring smooth ball recirculation and low noise.
Quality Control
Thread accuracy, runout and preload are measured per batch; inspection reports and material certificates can accompany shipment.
Stock & Dispatch
Standard SFU2005 shafts and nuts are kept on the shelf, pre-coated with anti-rust oil and individually packaged.
08 / Our Services
What WE OFFER
Custom Manufacturing
Shaft length, end journals, nut types and accuracy classes are machined to your drawing. Send us your 2D/3D file for a tailored solution.
Quality Assurance
We follow ISO 9001 process controls. Dimensional inspection reports, material mill certificates and accuracy class records are available on request.
Fast Sampling
Standard 1605 ball screws and nuts are kept in stock, ready to ship within 3–5 working days for your evaluation.
Technical Support
Our engineering team helps you select the right diameter, lead, preload and support configuration for your specific load and speed requirements.
OEM / ODM
Private label, custom packaging and branding services available for distributors and system integrators. Contact us for OEM terms.
After-Sales Support
If any dimension or performance issue arises, our team will respond promptly with replacement or technical guidance within the warranty period.
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09 / FAQ
Frequently Asked Questions
Q: What does "1605" mean in the model name?
A: The first two digits refer to the nominal shaft diameter (16 mm), and the last two digits refer to the lead (5 mm per revolution). So a 1605 ball screw moves the nut 5 mm along the shaft for every full 360° rotation.
Q: What is the difference between C7 and C5 accuracy?
A:C7 (rolled) is the standard accuracy class, suitable for general automation, packaging and handling equipment. C5 (ground) is precision-ground for higher positioning accuracy and is typically selected for CNC machine tools, precision inspection equipment and high-repeatability applications.
Q:Which shaft material does the 1605 ball screw use?
A:The standard shaft material is GCr15 chrome bearing steel (equivalent to SUJ2 / SAE 52100), induction hardened to HRC 58–62 on the raceway. For corrosion-resistant or washdown environments, stainless steel 304/316 can be supplied on request.
Q: Do you accept custom shaft lengths and end machining?
A: Yes. Standard stock lengths are available, but we commonly machine shafts to customer drawings - including end journals, keyways, threaded ends and bearing support interfaces. Please send your drawing with the required length, end details and tolerance for a confirmed quote.
Q: What is the typical lead time and sample policy?
A: Standard SFU1605 shafts and nuts in stock can usually be shipped within 3–5 working days. Custom-machined or ground C5 versions typically take 2–4 weeks depending on quantity. Samples are available for evaluation before bulk orders; contact us to discuss sample cost and lead time.
Q: How should the ball screw be lubricated?
A: Ball screws require regular lubrication with grease or oil to maintain efficiency and extend life. Standard anti-rust oil is applied before dispatch; for operation, lithium-based grease or a recommended way oil is typically used. The lubrication interval depends on speed, duty cycle and environment - we can advise based on your application.
Q: What is the MOQ for the 1605 ball screw?
A: For standard stock SFU1605 shafts and nuts, the MOQ is just 1 piece. For custom-machined ends or C5 ground versions, the typical MOQ is 10–50 pieces depending on the drawing. Sample orders before bulk purchase are welcome.
NEED A QUOTE FOR 1605 BALL SCREW?
Send us your required length, accuracy class, material, nut type and end drawing.
We will reply with a detailed quotation and lead time.
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