What materials are used for the ball screw?

The shaft is made of S55C or CF53 material, and the nut is made of 20CrMo material, both hardened to HRC58-62.

How long is the delivery time?

Delivery time is based on the required quantity. The average lead time is one month for both peak and off-peak seasons.

Is this product compatible with TBI brand?

Yes, our ERSK ball screws and nuts are designed to be interchangeable with Taiwan TBI ball screws and nuts.

High-Precision Dia20 Chinese Ball Screw for Ejection Shaping Machines

Name: High-Precision Dia20 Chinese Ball Screw for Ejection Shaping Machines
Brand: Lishui Wangong Precision Machinery Co., Ltd.
SKU: 754446225

Zhejiang, ChinaLishui Wangong Precision Machinery Co., Ltd.

US$30.00

5 Sets

Sample price:US$35.00/piece.Request sample

Product profile

Customization

Available

Flange

With Flange

Nut Number

Single

Model NO.

SFI2005

Nut Type

Circulator

Precision

Rows Number

4-Row

Screw Diameter

11-20mm

Type

Inner Loop

Product Name

Customized Length Ballscrew

Model No.

Sfi2005

Manufacturing Process

Rolled Thread

Thread Direction

Application

CNC Milling Machinery

Structure

Ball Screw Shaft+Nut+Steel Balls

Feature

Interchanged Easily

Treatment

Heat Treatment

Hardness

HRC58-60

Tolerance

C5, C7, C10 Precision

Material

S55c, CF53

Interchanged

Easy Interchange Tbi Ball Screw and Nuts

End Machinized

Matched Bk/Bf End Supports

Ball Screw Precision

Ballscrew Pitch

5mm/10mm

Transport Package

Wooden Case, Safety Cartons or by Negotiation

Specification

SFI series

Trademark

ERSK

Origin

Lishui, Zhejiang, China

HS Code

84834010

Production Capacity

10000set. /Month

Key features

High Precision Grades: Available in C5, C7, and C10 precision levels for various accuracy requirements.

Easy Interchangeability: Compatible with TBI Motion and ERSK ball screws and nuts for easy replacement.

Custom Length Options: Max length up to 6000mm with custom lengths available based on customer requirements.

High Rigidity & Low Noise: Gothic arch groove profile allows zero preload, ensuring smooth operation and high rigidity.

Durable Material Quality: Made from S55C/CF53 shafts and 20CrMo nuts, hardened to HRC58-62 for long life.

ISO9001 Certified: Manufactured under ISO9001-2008 standards with 100% finished product inspection.

Fast Delivery & Stock: Large stock available with short delivery times, typically one month for peak/off-peak seasons.

Comprehensive Support: Provides technical assistance, installation instructions, and after-sales service globally.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceYears of Export ExperienceSelf-branded

Lishui Wangong Precision Machinery Co., Ltd.

Zhejiang, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs CertifiedExport Year: 17 Years CertifiedNearest Port: Ningbo Port , Shanghai PortAverage Response Time: ≤2.00h

AI-Powered supplier vetting

SummaryLishui Wangong Precision Machinery Co., Ltd. is a limited company founded in 2008, with 98 employees and operations covering R&D, manufacturing, sales, and service. It manufactures precision transmission components, including linear shafts, ball screws, linear guides, cylinder rails, linear bearings, and roller linear rails. The supplier demonstrates documented service procedures, complaint handling, corrective and preventive actions, export licensing, OEM/ODM capability, and customization from samples and designs. Production infrastructure includes lathing, CNC machining, milling, and ultrasonic cleaning facilities, with documented finished-product inspection instructions. However, it has no overseas warehouse, showroom, agent, or branch, and reports zero countries with overseas service coverage. Financial capacity is referenced for 2022–2024, but no financial performance details are provided. A BV audit is recorded with validity from April 16, 2025 to April 15, 2026, but the audit result is listed as 0...

Supplier typeThe supplier is identified as Lishui Wangong Precision Machinery Co., Ltd., a limited company founded in 2008. It is described as a combined business integrating R&D, production, sales, and service, and is not an offshore company or part of a larger company group.

After-Sales capabilityThe supplier has documented procedures and followed records for service capability assessment, corrective and preventive actions, and effective customer complaint handling. However, it has no overseas warehouse, showroom, agent, or branch, and reports service coverage in zero countries; therefore, its formal service processes are evidenced, while overseas after-sales reach is limited.

R&D capabilityThe supplier states that it has R&D capability, introduced new products during the past year, and provides ODM services. It can customize from samples and designs, but it explicitly has no available SDK; the available evidence supports product development capability but not a broader technology-platform capability.

Production capacityThe supplier manufactures multiple precision transmission components and operates lathing, CNC machining, milling, and ultrasonic cleaning facilities. It also has uniformly followed finished-product inspection instructions, but no quantitative productivity figures are provided and the audit evaluation result is recorded as 0, so overall production strength cannot be fully confirmed.

Customization capabilityThe supplier explicitly offers customization from samples and from customer designs, and also provides ODM services. These statements directly demonstrate both design-based customization and original design manufacturing capability.