Metric Gears, LS Sintered Metal Spur Gears Modules 0.5 & 0.8

Quality Transmission is the largest North American supplier of off-the-shelf metric gearing.

Specifications
Precision grade	JIS Grade N8 (JIS B 1702-1:1998) JIS Grade 4 (JIS B 1702:1976)	Core hardness	HB7095
Gear teeth	Standard full depth	Surface hardness	HB7095
Pressure angle	20	Surface treatment	-
Material	SMF5040 (Equivalent to S45c Steel)	Surface finish	Sintered
Heat treatment	-	Datum reference surface for tooth forming	Bore

Module 0.5

Catalog No.	Module	No. of teeth	Bore 1 Note 1	Bore 2	Hub dia.	Pitch dia.	Outside dia.	Face width	Hub width	Total Length	Shape	Allowable torque (Nm) Note 2		Allowable torque (kgfm)		Backlash (mm) Note 3	Weight (gf)	Catalog No.
Catalog No.	m	z	A-0.005 -0.020	A'+0.1 -0.1	B	C	D	E	F	G	Shape	Bending strength	Surface durability	Bending strength	Surface durability	Backlash (mm) Note 3	Weight (gf)	Catalog No.
LS0.5-12 [ DXF\| DWG\| 3D CAD] LS0.5-16 [ DXF\| DWG\| 3D CAD] LS0.5-20 [ DXF\| DWG\| 3D CAD] LS0.5-25 [ DXF\| DWG\| 3D CAD] LS0.5-30 [ DXF\| DWG\| 3D CAD]	0.5 0.5 0.5 0.5 0.5	12 16 20 25 30	2 2 3 3 3	2.1 2.1 3.1 3.1 3.1	7.4 9.4 11.4 8.5 9	6 8 10 12.5 15	7 9 11 13.5 16	4 4 4 3 3	3 3 4 4 4	7 7 8 7 7	S3 S3 S3 S1 S1	0.1407 0.2262 0.3176 0.3278 0.4203	0.0078 0.0145 0.0232 0.0272 0.0396	0.0143 0.0231 0.0324 0.0334 0.0429	0.0008 0.0015 0.0024 0.0028 0.0040	0.060.16 0.060.16 0.060.16 0.10.2 0.10.2	2 2 4 4 5	LS0.5-12 LS0.5-16 LS0.5-20 LS0.5-25 LS0.5-30

Catalog No. Module No. of teeth Bore 1
Note 1 Bore 2 Hub dia. Pitch dia. Outside dia. Face width Hub width Total Length Web Thickness Web Depth Rim ID Shape Allowable torque
(Nm) Note 2 Allowable torque
(kgfm) Backlash
(mm)
Note 3 Weight
(gf) Catalog No.

m z A-0.005
-0.020 A'+0.1
-0.1 B C D E F G H I J Bending
strength Surface
durability Bending
strength Surface
durability

LS0.5-40
[ DXF| DWG| 3D CAD]
LS0.5-50
[ DXF| DWG| 3D CAD]
LS0.5-60
[ DXF| DWG| 3D CAD]
LS0.5-70
[ DXF| DWG| 3D CAD]
LS0.5-80
[ DXF| DWG| 3D CAD] 0.5

0.5

0.5

0.5

0.5 40

50

60

70

80 3

4

4

4

4 3.1

4.1

4.1

4.1

4.1 9

12

12

12

12 20

25

30

35

40 21

26

31

36

41 3

3

3

3

3 4

5

5

5

5 7

8

8

8

8 1.5

1.5

1.5

1.5

1.5 0.75

0.75

0.75

0.75

0.75 16.5

21.5

26.5

31.5

36.5 S9

S9

S9

S9

S9 0.611

0.8062

1.0042

1.204

1.4051 0.0715

0.1144

0.1682

0.233

0.309 0.0623

0.0822

0.1024

0.1228

0.1433 0.0073

0.0117

0.0172

0.0237

0.0315 0.10.2

0.120.24

0.120.24

0.120.24

0.120.24 6

10

14

16

20 LS0.5-40

LS0.5-50

LS0.5-60

LS0.5-70

LS0.5-80

Catalog No.	Module	No. of teeth	Bore 1 Note 1	Bore 2	Hub dia.	Pitch dia.	Outside dia.	Face width	Hub width	Total Length	Web Thickness	Web Depth	Rim ID	Shape	Allowable torque (Nm) Note 2	Allowable torque (kgfm)	Backlash (mm) Note 3	Weight (gf)	Catalog No.
m	z	A-0.005 -0.020	A'+0.1 -0.1	B	C	D	E	F	G	H	I	J	Bending strength	Surface durability	Bending strength	Surface durability
LS0.5-40 [ DXF\| DWG\| 3D CAD] LS0.5-50 [ DXF\| DWG\| 3D CAD] LS0.5-60 [ DXF\| DWG\| 3D CAD] LS0.5-70 [ DXF\| DWG\| 3D CAD] LS0.5-80 [ DXF\| DWG\| 3D CAD]	0.5 0.5 0.5 0.5 0.5	40 50 60 70 80	3 4 4 4 4	3.1 4.1 4.1 4.1 4.1	9 12 12 12 12	20 25 30 35 40	21 26 31 36 41	3 3 3 3 3	4 5 5 5 5	7 8 8 8 8	1.5 1.5 1.5 1.5 1.5	0.75 0.75 0.75 0.75 0.75	16.5 21.5 26.5 31.5 36.5	S9 S9 S9 S9 S9	0.611 0.8062 1.0042 1.204 1.4051	0.0715 0.1144 0.1682 0.233 0.309	0.0623 0.0822 0.1024 0.1228 0.1433	0.0073 0.0117 0.0172 0.0237 0.0315	0.10.2 0.120.24 0.120.24 0.120.24 0.120.24	6 10 14 16 20	LS0.5-40 LS0.5-50 LS0.5-60 LS0.5-70 LS0.5-80

Module 0.8

Catalog No.	Module	No. of teeth	Bore 1 Note 1	Bore 2	Hub dia.	Pitch dia.	Outside dia.	Face width	Hub width	Total Length	Shape	Allowable torque (Nm) Note 2		Allowable torque (kgfm)		Backlash (mm) Note 3	Weight (gf)	Catalog No.
Catalog No.	m	z	A-0.005 -0.020	A'+0.1 -0.1	B	C	D	E	F	G	Shape	Bending strength	Surface durability	Bending strength	Surface durability	Backlash (mm) Note 3	Weight (gf)	Catalog No.
LS0.8-12 [ DXF\| DWG\| 3D CAD] LS0.8-16 [ DXF\| DWG\| 3D CAD] LS0.8-20 [ DXF\| DWG\| 3D CAD] LS0.8-25 [ DXF\| DWG\| 3D CAD] LS0.8-30 [ DXF\| DWG\| 3D CAD]	0.8 0.8 0.8 0.8 0.8	12 16 20 25 30	3 3 3 3 4	3.1 3.1 3.1 3.1 4.1	11.6 8 9 9 12	9.6 12.8 16 20 24	11.2 14.4 17.6 21.6 25.6	5 4 4 4 4	4 4 4 4 5	9 8 8 8 9	S3 S1 S1 S1 S1	0.45 0.579 0.813 1.119 1.435	0.026 0.0381 0.0603 0.0953 0.1398	0.0459 0.0591 0.0829 0.1141 0.1463	0.0027 0.0039 0.0061 0.0097 0.0143	0.060.16 0.060.16 0.060.16 0.10.2 0.10.2	4 4 6 10 16	LS0.8-12 LS0.8-16 LS0.8-20 LS0.8-25 LS0.8-30

Catalog No. Module No. of teeth Bore 1
Note 1 Bore 2 Hub dia. Pitch dia. Outside dia. Face width Hub width Total Length Web Thickness Web Depth Rim ID Shape Allowable torque
(Nm) Note 2 Allowable torque
(kgfm) Backlash
(mm)
Note 3 Weight
(gf) Catalog No.

m z A-0.005
-0.020 A'+0.1
-0.1 B C D E F G H I J Bending
strength Surface
durability Bending
strength Surface
durability

LS0.8-40
[ DXF| DWG| 3D CAD]
LS0.8-50
[ DXF| DWG| 3D CAD]
LS0.8-60
[ DXF| DWG| 3D CAD]
LS0.8-70
[ DXF| DWG| 3D CAD]
LS0.8-80
[ DXF| DWG| 3D CAD] 0.8

0.8

0.8

0.8

0.8 40

50

60

70

80 4

4

4

5

5 4.1

4.1

4.1

5.1

5.1 12

12

12

15

15 32

40

48

56

64 33.6

41.6

49.6

57.6

65.6 4

4

4

4

4 5

5

5

6

6 9

9

9

10

10 2

2

2

2

2 1

1

1

1

1 26.4

26.4

26.4

26.4

26.4 S9

S9

S9

S9

S9 2.09

2.75

3.43

4.11

4.8 0.257

0.412

0.605

0.836

1.106 0.213

0.281

0.35

0.419

0.489 0.0262

0.0420

0.0617

0.0853

0.1128 0.10.2

0.120.24

0.120.24

0.120.24

0.120.24 20

26

36

48

60 LS0.8-40

LS0.8-50

LS0.8-60

LS0.8-70

LS0.8-80

Catalog No.	Module	No. of teeth	Bore 1 Note 1	Bore 2	Hub dia.	Pitch dia.	Outside dia.	Face width	Hub width	Total Length	Web Thickness	Web Depth	Rim ID	Shape	Allowable torque (Nm) Note 2	Allowable torque (kgfm)	Backlash (mm) Note 3	Weight (gf)	Catalog No.
m	z	A-0.005 -0.020	A'+0.1 -0.1	B	C	D	E	F	G	H	I	J	Bending strength	Surface durability	Bending strength	Surface durability
LS0.8-40 [ DXF\| DWG\| 3D CAD] LS0.8-50 [ DXF\| DWG\| 3D CAD] LS0.8-60 [ DXF\| DWG\| 3D CAD] LS0.8-70 [ DXF\| DWG\| 3D CAD] LS0.8-80 [ DXF\| DWG\| 3D CAD]	0.8 0.8 0.8 0.8 0.8	40 50 60 70 80	4 4 4 5 5	4.1 4.1 4.1 5.1 5.1	12 12 12 15 15	32 40 48 56 64	33.6 41.6 49.6 57.6 65.6	4 4 4 4 4	5 5 5 6 6	9 9 9 10 10	2 2 2 2 2	1 1 1 1 1	26.4 26.4 26.4 26.4 26.4	S9 S9 S9 S9 S9	2.09 2.75 3.43 4.11 4.8	0.257 0.412 0.605 0.836 1.106	0.213 0.281 0.35 0.419 0.489	0.0262 0.0420 0.0617 0.0853 0.1128	0.10.2 0.120.24 0.120.24 0.120.24 0.120.24	20 26 36 48 60	LS0.8-40 LS0.8-50 LS0.8-60 LS0.8-70 LS0.8-80

CAUTION: Although the sintering process allows for the inclusion of oil to maintain lubricity, these gears have NOT been oil impregnated.
CAUTION: The rust prevention process for these gears involves treating the gears with steam (in effect creating surface oxidation). A black oxide finish CANNOT be perfomed on these gears.

USEFUL HINT: Gears with wider face widths such as SS and SSA series can be used as mating gears to these.

NOTE 1: The bore1 is machined to a minus tolerance so that the gear can simply be pressed onto the shaft. You can also open up the bore.
NOTE 2: The allowable torques shown in the table are the calculated values according to JGMA Standards 401-01 and 402-01.
NOTE 3:The backlash values shown in the table are the theoretical values of a pair of identical gears in mesh.

Characteristics of Sintered Steel Spur Gears:
1. The cost of the gears is minimized due to the elimination of many machining costs and in a reduction in wasted material.
2. These gears have a very high precision for sintered products (JIS N8 Class). They have a high reliability for maintaining this precision.
3. Oil-impregnated sintering creates interconnecting pores in which lubricating oil is stored for long, trouble-free operation.

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