Specifications Catalog No. SRF KRF Precision grade KHK R 001 grade 4 KHK R 001 grade 4 Gear teeth Standard full depth Standard full depth Pressure angle 20 20 Material S45C-D Carbon Steel SCM440 Alloy Steel Heat treatment Stress relief annealing Thermal Refining only Core hardness less than HRB95 HB250285 Surface hardness Surface treatment Black oxide Black oxide Surface finish Hobbed Hobbed Datum reference surface for gear cutting Bottom surface Bottom surface

R1 (Type F)

Module 13 300mm Type F Racks

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Catalog No.	Module	Total length	Face width	Height	Height to pitch line	Effective No. of teeth	Shape	Allowable force (kgf)		Allowable force (N)		Weight (kgf)	Catalog No.
	m	A	B	C	D			Bending strength	Surface durability	Bending strength	Surface durability
SRF1-300 [ DXF| DWG| 3D CAD] SRF1.5-300 [ DXF| DWG| 3D CAD] SRF2-300 [ DXF| DWG| 3D CAD] SRF2.5-300 [ DXF| DWG| 3D CAD] SRF3-300 [ DXF| DWG| 3D CAD]	1 1.5 2 2.5 3	301.59 301.59 301.59 298.45 301.59	10 15 20 25 30	12 20 25 30 35	11 18.5 23 27.5 32	96 64 48 38 32	R1 R1 R1 R1 R1	97.71 219.9 390.9 610.7 879.4	18.02 42.92 79.03 126.6 185.7	958.2 2156 3833 5989 8624	176.7 420.9 775 1242 1821	0.251 0.73 1.2 1.8 2.5	SRF1-300 SRF1.5-300 SRF2-300 SRF2.5-300 SRF3-300

Module 16 500mm Type F Racks

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Catalog No.	Module	Total length	Face width	Height	Height to pitch line	Effective No. of teeth	Shape	Allowable force (kgf)		Allowable force (N)		Weight (kgf)	Catalog No.
	m	A	B	C	D			Bending strength	Surface durability	Bending strength	Surface durability
SRF1-500 [ DXF| DWG| 3D CAD] SRF1.5-500 [ DXF| DWG| 3D CAD] SRF2-500 [ DXF| DWG| 3D CAD] SRF2.5-500 [ DXF| DWG| 3D CAD] SRF3-500 [ DXF| DWG| 3D CAD] SRF4-500 [ DXF| DWG| 3D CAD] SRF5-500 [ DXF| DWG| 3D CAD] SRF6-500 [ DXF| DWG| 3D CAD]	1 1.5 2 2.5 3 4 5 6	499.51 499.51 502.65 502.65 499.51 502.65 502.65 490.09	10 15 20 25 30 40 50 60	12 20 25 30 35 45 50 60	11 18.5 23 27.5 32 41 45 54	159 106 80 64 53 40 32 26	R1 R1 R1 R1 R1 R1 R1 R1	97.71 219.9 390.9 610.7 879.4 1563 2443 3518	18.02 42.92 79.03 126.6 185.7 339.1 540 788.8	958.2 2156 3833 5989 8624 15330 23960 34500	176.7 420.9 775 1242 1821 3325 5296 7735	0.41 1.19 1.89 2.59 3.76 6.27 8.26 12.3	SRF1-500 SRF1.5-500 SRF2-500 SRF2.5-500 SRF3-500 SRF4-500 SRF5-500 SRF6-500

Module 110 1000mm Type F Racks

NOTE: The material of SRF10 is S45C which is a machined rectangular section and not S45C-D (forged material).

Module 1.56 1500mm Type F

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Catalog No.	Module	Total length	Face width	Height	Height to pitch line	Effective No. of teeth	Shape	Allowable force (kgf)		Allowable force (N)		Weight (kgf)	Catalog No.
	m	A	B	C	D			Bending strength	Surface durability	Bending strength	Surface durability
SRF1.5-1500 [ DXF| DWG| 3D CAD] SRF2-1500 [ DXF| DWG| 3D CAD] SRF2.5-1500 [ DXF| DWG| 3D CAD] SRF3-1500 [ DXF| DWG| 3D CAD] SRF4-1500 [ DXF| DWG| 3D CAD] SRF5-1500 [ DXF| DWG| 3D CAD] SRF6-1500 [ DXF| DWG| 3D CAD]	1.5 2 2.5 3 4 5 6	1507.96 1507.96 1507.96 1507.96 1507.96 1507.96 1507.96	15 20 25 30 40 50 60	20 25 30 35 45 50 60	18.5 23 27.5 32 41 45 54	320 240 192 160 120 96 80	R1 R1 R1 R1 R1 R1 R1	219.9 390.9 610.7 879.4 1563 2443 3518	42.92 79.03 126.6 185.7 339.1 540 788.8	2156 3833 5989 8624 15330 23960 34500	420.9 775 1242 1821 3325 5296 7735	3.3 5.5 8.2 11.4 19.4 26.6 38.3	SRF1.5-1500 SRF2-1500 SRF2.5-1500 SRF3-1500 SRF4-1500 SRF5-1500 SRF6-1500

Module 1.56 2000mm Type F

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Catalog No.	Module	Total length	Face width	Height	Height to pitch line	Effective No. of teeth	Shape	Allowable force (kgf)		Allowable force (N)		Weight (kgf)	Catalog No.
	m	A	B	C	D			Bending strength	Surface durability	Bending strength	Surface durability
SRF1.5-2000 [ DXF| DWG| 3D CAD] SRF2-2000 [ DXF| DWG| 3D CAD] SRF2.5-2000 [ DXF| DWG| 3D CAD] SRF3-2000 [ DXF| DWG| 3D CAD] SRF4-2000 [ DXF| DWG| 3D CAD] SRF5-2000 [ DXF| DWG| 3D CAD] SRF6-2000 [ DXF| DWG| 3D CAD]	1.5 2 2.5 3 4 5 6	2049.88 2048.31 2049.88 2045.17 2048.31 2042.04 2035.75	15 20 25 30 40 50 60	20 25 30 35 45 50 60	18.5 23 27.5 32 41 45 54	435 326 261 217 163 130 108	R1 R1 R1 R1 R1 R1 R1	219.9 390.9 610.7 879.4 1563 2443 3518	42.92 79.03 126.6 185.7 339.1 540 788.8	2156 3833 5989 8624 15330 23960 34500	420.9 775 1242 1821 3325 5296 7735	4.5 7.4 11 15.4 26.4 35.9 51.8	SRF1.5-2000 SRF2-2000 SRF2.5-2000 SRF3-2000 SRF4-2000 SRF5-2000 SRF6-2000

Module 1.55 1000 mm Type F Racks, Thermally Refined

NOTE: Due to a decarburization layer of about 0.5mm, the rectangular sufaces have less than the specified hardness.

NOTE: The allowable transmission forces are calculated according to JGMA Standards 401-01 and 402-01. All dimensions shown in the above table(s) are listed in millimeters unless otherwise specified.