In our standards which includes two major rack systems in the world. One is mainly for DIN and the other is for JIS specifications.  (AGMA system is coming soon) The code instruction is divided into materials, types, shapes, heat treatments, hardness, modules, CP, lengths, and grade.

Material: S50C (medium carbon steel) and SCM440 (chromium molybdenum alloy steel)

Type: Straight and Helical with 19°31'42", 20°30', 15°. 
Shape: Tetragon 
Teeth Treatment: Milled, Ground. 
Hardness: Quenched & Tempered and Hardened. 
Module: from M1 to M10. 
CP: from CP5 to CP20 
Length: there are 4 major ones. 500mm, 1000mm, 1500mm, and 2000mm. 
Grade: DIN 5 to DIN9 / JIS 1 to JIS 5

Remarks: Lengths, holes,materials,surface treaments (sandblasted, phosphated, sides ground) and other requirements all could be customized.

1. What is YYC?

YYC is the leading brand of high precision rack and pinion in Asia Market with 40 years experiences. Web: www.yycdrives.com

2. How to choose suitable racks?

Refer to our e-catalogue as link on https://www.yycdrives.com/YYCCatalogue.html

E-mail us your demands to info@yycdrives.com

3. Can YYC customize racks?

Customized racks are available based on drawings. Meanwhile, MOQ is also required.

4. What are racks quality grade levels?

YYC Racks are as in accordance with DIN 3962 as international standards.

DIN 5 Rack total pitch error per meter is ≦0.026 mm.

DIN 6 Rack total pitch error per meter is ≦0.036 mm.

DIN 7 Rack total pitch error per meter is ≦0.048 mm.

DIN 8 Rack total pitch error per meter is ≦0.060 mm.

DIN 10 Rack total pitch error per meter is ≦0.150 mm.

5. What’s the longest rack YYC can make?

For standards, lengths will be 1000 or 2000 mm long. All racks are joinable, so racks can be connected as long as possible. Other lengths could be customized.

6. Do YYC Racks have different dimensions like CP, DP for different countries?

YYC racks majorly are modules, but we can make CP, DP for Japan, America, and other countries.

7. Should we choose straight racks or helical racks?

Straight racks is more economic but helical racks are more smooth, accurate, and less noise.

8. How could we make sure racks and pinions match together well?

Basically, straight racks match straight pinions. Helical Right hand angle (19°31’42”) racks match left hand angle pinions. Both have to be the same module.

9. Does YYC offer assembling tooth gauge?

YYC offers assembling tooth gauge at buyer’s cost. YYC also provides instruction of rack assembling steps on catalogue.

10. Should we choose racks with hardeness?

Without hardness, rack is soft. Hardness is around HRC 10°~12°.

After hardening, HRC is 50°~55°. Racks will have better long life to against worn-out. One only concern is that there are black traces on sides, so extra surface treatment like sandblasted, phosphated, surface ground either is recommended.

11. Could we use other materials?

YYC offers different materials for racks and pinions such as S45C, SCM440, SCM415, SUS 303, plastic, copper, aluminum etc. 

12. How long is YYC delivery?

YYC racks are made to order. It depends on quality level and Q’ty. Basically, from 2 to 8 weeks.

13. How to pay?

T/T remittance, L/C, PayPal.

14. What are the terms of trade?

EXW, FOB, CIF etc.

15. Do you provide samples?

Samples are available at Buyer’s cost.

Series CSTGH-DIN5 Straight Teeth Ground Racks

Material S50C
Hardness: HRC 50~55°
Ground on all sides after hardening.
Total Pitch Error: Fp /1000 ≦ 0.026 mm
Room Temperature is 25°C

Material S50C
Hardness HRC 50~55°
Ground on all sides after hardening.
Total Pitch Error: Fp /1000 ≦ 0.036 mm
                         Fp /2000 ≦ 0.047 mm ( ≦ 0.024/1000 mm)

Material S50C
Hardness HRC 10~12°
Total Pitch Error: Fp /1000 ≦ 0.060 mm
                         Fp /2000 ≦ 0.080 mm

Material S50C
Hardness HRC 18~22°
Total Pitch Error: Fp /1000 ≦ 0.060 mm
                         Fp /2000 ≦ 0.080 mm

Material S50C
Hardness: HRC 50~55°
Surfaces: Sand-blasted or phosphated.
Total Pitch Error: Fp /1000 ≦ 0.1 mm

Material S50C
Right Hand Angle 19°31'42"
Hardness HRC 50~55°
Ground on all sides after hardening.
Total Pitch Error: Fp /1000 ≦ 0.026 mm
Room Temperature is 25°C

Material S50C
Right Hand Angle 19°31'42"
Hardness HRC 50~55°
Ground on all sides after hardening.
Total Pitch Error: Fp /1000 ≦ 0.036 mm
                         Fp /2000 ≦ 0.047 mm ( ≦ 0.024/1000 mm)

Material SCM440
Right Hand Angle 19°31'42"
Hardness HRC 10~12°
Ground on all sides.
Total Pitch Error: Fp /1000 ≦ 0.036 mm
                         Fp /2000 ≦ 0.047 mm ( ≦ 0.024/1000 mm)

Material S50C
Right Hand Angle 19°31'42"
Hardness: HRC 10~12°
Total Pitch Error: Fp /1000 ≦ 0.060 mm
                         Fp /2000 ≦ 0.080 mm

Material S50C
Right Hand Angle 19°31'42"
Hardness: HRC 18~22°
Total Pitch Error: Fp /1000 ≦ 0.060 mm
                         Fp /2000 ≦ 0.080 mm

Material S50C
Right Hand Angle 19°31'42"
Hardness: HRC 50~55°
Surfaces: Sand-blasted.
Total Pitch Error: Fp /1000 ≦ 0.15 mm

Material S50C
Right Hand Angle 15°
Hardness: HRC 10~12°
Surfaces: Black-coated
Total Pitch Error: Fp/1000 ≦ 0.075mm
No Mounted Holes , Code with-N

Material S50C
Hardness: HRC 50~55°
Surfaces: Black-coated (Exclude Teeth)
Ground on all sides after hardening.
Total Pitch Error: Fp/1000 ≦ 0.036 mm
No Mounted Holes , Code with-N

Material SCM440
Hardness: HRC 18~22°
Surfaces: Black-coated
Total Pitch Error: Fp/1000 ≦ 0.075mm
No Mounted Holes , Code with-N

Material S50C
Hardness: HRC 10~12°
Surfaces: Black-coated
Total Pitch Error: Fp/1000 ≦ 0.075mm
No Mounted Holes , Code with-N

Material S50C
Hardness: HRC 50~55°
Surfaces: Black-coated
Total Pitch Error: Fp/1000 ≦ 0.15mm
No Mounted Holes , Code with-N

Material SCM440
Hardness HRC 55~58°
Ground on all sides after hardening.
Total Pitch Error: Fp/1000 ≦ 0.033mm
No Mounted Holes , Code with-N
Room Temperature is 25°

Material S50C
Hardness: HRC 10~12°
Surfaces: Black-coated
Total Pitch Error: Fp /1000 ≦ 0.075mm
No Mounted Holes , Code with-N

Material SCM440
Right Hand Angle 21°30'
Hardness: HRC 18~22°
Total Pitch Error: Fp/1000 ≦ 0.033mm
Ground on all sides after quenching.
No Mounted Holes , Code with-N

Material SCM440
Hardness: HRC 18~22°
Total Pitch Error: Fp/1000 ≦ 0.033mm
Ground on all sides after quenching.
No Mounted Holes , Code with-N
Room Temperature is 25°C

Quality Grade DIN6
Material SCM440
Hardness: HRC 53~58°
6 Sides Ground and Teeth Ground after hardening.
Total Pitch Error: Fp /1000 ≦ 0.036 mm

Quality Grade DIN8
Material S50C
Hardness: HRC 10~12°
Total Pitch Error: Fp /1000 ≦ 0.060 mm

Quality Grade DIN6
Material SCM440
Hardness: HRC 53~58°
6 Sides Ground after hardening.

Quality Grade DIN6
Material SCM440
Hardness: HRC 53~58°
6 Sides Ground after hardening.

Quality Grade DIN8
Material S50C
Hardness: HRC 10~12°

Quality Grade DIN6
Material SCM440
Hardness: HRC 53~58°
4 Sides Ground and Teeth Ground after hardening.
Total Pitch Error: Fp /1000 ≦ 0.036 mm

Quality Grade DIN8
Material S50C
Hardness: HRC 10~12°
Total Pitch Error: Fp /1000 ≦ 0.060 mm

Quality Grade DIN6
Material SCM440
Hardness: HRC 53~58°
4 Sides Ground after hardening.

Quality Grade DIN6
Material S50C
Hardness: HRC 10~12°

Quality Grade DIN6
Material SCM440
Right Hand Angle 19°31'42"
Hardness: HRC 53~58°
6 Sides Ground and Teeth Ground after hardening.
Total Pitch Error: Fp /1000 ≦ 0.036 mm

Quality Grade DIN8
Material S50C
Right Hand Angle 19°31'42"
Hardness HRC: 10~12°
Total Pitch Error: Fp /1000 ≦ 0.060 mm

1. What is YYC?

YYC is the leading brand of high precision rack and pinion in Asia Market with 40 years experiences. Web: www.yycdrives.com

2. How to choose suitable pinions?

Refer to our e-catalogue as link on https://www.yycdrives.com/YYCCatalogue.html

E-mail us your demands to info@yycdrives.com

3. Can YYC customize pinions?

Customized pinions are available based on drawings. Meanwhile, MOQ is also required.

4. What are pinions quality grade levels?

YYC pinions include DIN 6 to DIN 10.

5. What are the biggest/smallest pinions YYC can make?

YYC pinions can be from M0.5 to M20.

6. Do YYC pinions have different dimensions like CP, DP for different countries?

YYC pinions majorly are modules, but we can also make CP, DP for Japan, America, and other countries.

7. Should we choose straight pinions or helical pinions?

Straight pinions is more economic but helical pinions are more smooth, accurate, and less noise.

8. How could we make sure racks and pinions match together well?

Basically, straight racks match straight pinions. Helical Right hand angle (19°31’42”) racks match left hand angle pinions. Both have to be the same module.

9. Should we choose pinions with hardness?

Without hardness, pinion is soft which is more economic.

After hardening, HRC is 50°~55°. Pinions will have better long life to against worn-out. Pinions hardness can be high frequency or carburized, depending on customer’s request.

10. Could we use other materials?

YYC offers different materials for racks and pinions such as S45C, SCM440, SCM415, SUS 303, plastic, copper, aluminum etc. 

11. How long is YYC delivery?

YYC pinions are made to order. It depends on quality level and Q’ty. Basically, from 2 to 8 weeks.

12. How to pay?

T/T remittance, L/C, PayPal.

13. What are the terms of trade?

EXW, FOB, CIF etc.

14. Do you provide samples?

Samples are available at Buyer’s cost.

Series MSGH-DIN6 Straight Teeth Ground Pinions

Material SCM415/SCM440
Hardness: HRC 50~55°
Teeth Ground after Hardening

Series MSSH-DIN7 Straight Skiving Pinions

Material SCM415/SCM440
Hardness: HRC 50~55°
Skiving after Hardening

Series CSM-DIN8 Straight Soft Pinions

Material S45C / S50C

Series MSMH-DIN10 Straight Hardened Pinions

Material SCM415/SCM440
Hardness: HRC 50~55°
Surfaces: Sand-blasted
Other surface treatments are available upon request.

Series MHGH-DIN6 Helical Teeth Ground Pinions

Material SCM415/SCM440
Left Hand Angle 19°31'42"
Hardness: HRC 50~55°
Teeth Ground after Hardening

Series MHSH-DIN7 Helical Skiving Pinions

Material SCM415/SCM440
Left Hand Angle 19°31'42"
Hardness: HRC 50~55°
Skiving after Hardening

Series CHM-DIN8 Helical Soft Pinions

Material S45C / S50C
Left Hand Angle 19°31'42"

Series MHMH-DIN10 Helical Hardened Pinions

Material SCM415/SCM440
Left Hand Angle 19°31'42"
Hardness: HRC 50~55°
Surfaces: Sand-blasted