Precision Helical

The steel gear rack is a core component of the medium-duty V-bar guideway rack drive system. This system consists of V-bar guideways, V-bar guideway racks, and rollers-with the rollers making linear contact with the guideways to ensure stable and smooth movement.

Boasting high operational speed, low noise, and precise positioning capabilities, the steel gear rack excels in medium-load industrial applications. To avoid cumulative pitch tolerance caused by [please supplement the specific factor for "n", e.g., "segmented rack splicing" or "long-stroke operation"], we specifically adopt CP racks for the steel gear rack assembly. Additionally, all types of guideways undergo induction hardening treatment, reaching a hardness of HRC50-55, which effectively enhances their wear resistance and prolongs the overall service life of the drive system.

 

 

The following are the technical parameters of some models of the Precision Helical with types module 1.5/2/3-4/M5-10.
①High-precision Helical Gear, Module 1.5
Precision grade:DIN 6h25(level JIS2)
Tooth Surface Treatment: Grinding
Hardness Treatment: Carburizing and Quenching, 50~60°HRC
Material: 16MnGr5
Pressure Angle: 20°
Left Helix Angle: 19°31'42"
Tooth Profile: Helical Tooth

 

 

②High-precision Helical Gear, Module2
Precision grade:DIN 6h25(level JIS2)
Tooth Surface Treatment: Grinding
Hardness Treatment: Carburizing and Quenching, 50~60°HRC
Material: 16MnGr5
Pressure Angle: 20°
Left Helix Angle: 19°31'42"
Tooth Profile: Helical Tooth
 

 

③High-precision Helical Gear, Module 3-4
Precision grade:DIN 6h25(level JIS2)
Tooth Surface Treatment: Grinding
Hardness Treatment: Carburizing and Quenching, 50~60°HRC
Material: 16MnGr5
Pressure Angle: 20°
Left Helix Angle: 19°31'42"
Tooth Profile: Helical Tooth

 

 

④High-precision Helical Gear, Module M5-10
Precision grade:DIN 6h25(level JIS2)
Tooth Surface Treatment: Grinding
Hardness Treatment: Carburizing and Quenching, 50~60°HRC
Material: 16MnGr5
Pressure Angle: 20°
Left Helix Angle: 19°31' 42"
Tooth Profile: Helical Tooth

If you need detailed information about this or other models,please contact our sales staff.
Hotline:+86 18944738967 Email:ruixinzidonghua@gmail.com LINE ID:@Miss Yuan

 

 

The product is suitable for the seventh axis of the robot and the robot mobile platform etc.

 

 

 

The following are the appearance details of the Precision Helical:

Guideway V bar rack drive system precision with linear guideway:The accuracy of the guideway system is built up from the basic quality of the guide,roller and drive elements.The guiding surfaces of carbon steel guideways are hardened to 50-55HRC.

Rollers:The rollers are dual-row angular contact ball-bearings with a 25 degree pressure angle with RSR seals and sealing ring. The rollers are manufactured to the PN tolerance class.The rollers can be supplied with normal or pre-loaded bearing clearances with concentrica or eccentric centers.

Code	Ga(μm)-Ordinary	Ga(μm)-Preload
15	+6/+23	-3/+5
20	+6/+23	-3/+5
25	+8/+27	-3/+5
35	+11/+33	-3/+5

 

Drive elements
Racks are supplied in various sizes to meet the required application for high precision and high

torque applications,the racks are hardened and ground.

Precision grade	Fp(mm)	Fp(mm)	p(mm)
DIN7h25	0.008	0.05	0/-0.02
DIN6h23	0.006	0.03	0/-0.01

 

Size Selection:

The data allows for a rough selection of the size of the required guideway system.The Cw value are listed in this table for a nominal service life of 108m(100000km),and refer to a roller with pure radial or axial loading.

IN cases of combined loading and shock,the calculation data on page 5 must be consulted,or a calculation verification can be requested from the manufacturer.

 

Driving force Selection:
After selecting the rack,the gear teeth of the guideway system must be checked for compatibility with the required drive forces and torques.
The rack can be supplied precision cut or ardened and ground.The values given are values for shock-free operation,good lubrication and stiff arrangement of the pinion.A safety factor for tooth root stress s>1.4 and a safety fact or for hertzian stress sh>1.0 is taken in account.
Depending on your experience and application a safety factor sB1.0.4.0 has to be considered.The tracking force FN is related to the number of teeth Z of the pinion.

 

Size verification:
The calculation must be done for the roller under the highest load.The life time values calculated are nominal 90% of all rollers reach these values.

 

 

Assembly：
The backlash setting and the pre-tensioning of the rollers takes place via the eccentric hub of the rollers of the series.
If a roller is located in its zero position the gear teeth backlash will be the standard value of 0.05mm fank clearance.

The service lif of the system will be reduced by excessive tensioning.

With too little tension the rollers will not run,or will wear due to the poor meshing.

By using a face spanner the eccentric of the roller can be turned and pre-loaded.

A correct preload means that the non-load-carrying roller can still be rotated manually using moderate force.

 

 

Adjustment Of Preload Of Rollers
(1)Loosen the fixing screws s,with the eccentric hub in Position I,push the drive carriage onto the beam.

(2)Turn the eccentric hubs of rollers i and 2 evenly in the direction of the arrow until the tooth flank clear nace is at a minimum with the eccentric set at the minimum distance in the vertical direction the backlash measured is 0.05mm.The service lif of the system will be reduced by excessive tensioning.

(3)Turn the eccentric of roller 3 and 4 evenly in the direction of arrow and the rollers will become slightly pre-tensioned.By turned and pre-loaded.

(4)Tighten fixing screw S:see above table for tightening torques.

(5)Check the backlash of the pinion to the rack.The pinion must not bind Otherwise,loosen the roller and repeat point2.

(6)Check the pre-tensioning:Rollers that are not under load must be able to turn using moderate force.If free loosen rollers 3 and 4 and repeat point 3.

 

 

 

Eccentric mounting fanges KEP together with eccentric rollers VR..B fulfl the same function as eccentric rollers VR.A.If a roller is located in its zero position the gear teeth backlash will be the standard value of 0.05mm fank clearance.
The backlash is adjusted by turning the mounting fange KEP.The eccentric positioned roler therefore moves radially towards the rail and the roller becomes adjusted.

The backlash is adjusted by turning the mounting fange KEP,the eccentric positioned roler therefore moves radially towards the rail and the roller becomes adjusted.

To do the adjustment of the eccentric mounting fanges KEP the same tools as for the adjustment of the eccentric rollers VR.A can be used.

Eccentric mounting fanges KEP have the same dimensions as eccentric mounting fanges KSP. In order to be able to use the full range of 1mm of the eccentric there have to be drilled 12 threads in the carriage instead of 4 on the eccentric mounting fanges.

After a rotation of 30o the 4 screws have to be moved to the next pattern.

 

 

By the way, we also provide lubrication systems that are compatible with gear racks. Below are the detailed parameters of the lubrication systems, and you are welcome to consult us and place an order.
Hotline:+86 18944738967 Email:ruixinzidonghua@gmail.com LINE ID:@Miss Yuan

 

 

 

The Precision Helical uses high-density steel as the raw material,making it suitable for heavy-duty industrial applications.
Our factory focuses on producing high-quality industrial products with high precision and rigidity, and has many years of excellent professional experience in quality and safety production.Our products have all undergone safety certification.

Our company specializes in industrial safety systems, offering an extensive portfolio of safety products with comprehensive model coverage-all while upholding strict standards for industrial safety quality. With years of dedication to industrial safety in production, we have accumulated profound expertise in this field.

Our enduring mission is to deliver safer workplaces for our clients. Aligned with this mission, every employee of the company strives to provide customers with satisfactory products paired with premium services.

We eagerly anticipate collaborating with clients to build a secure industrial production environment and jointly forge a brighter future.

 

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