Lead Screws / One End Stepped / One End Double Stepped DIN 103

Dimensional Drawing

Right-Hand Screw / Left-Hand Screw

h7 Tolerance (V,Q) Over or Less Tolerance 3 6 0 －0.012 6 10 0 －0.015 10 18 0 －0.018 18 30 0 －0.021 30 50 0 －0.025 Compliant with JIS B 0401

Unspecified Dimensional Tolerances Over or Less Tolerance 0.5 3 ±0.1 3 6 ±0.1 6 30 ±0.2 30 120 ±0.3 120 400 ±0.5 400 1000 ±0.8 1000 2000 ±1.2 Compliant with JIS B 0405 Class m (Middle Class)

Type [M] Material [S] Surface Treatment Right-Hand Screw Left-Hand Screw MTSRK MTSLK EN 1.1191 Equiv. — MTSBRK MTSBLK Black Oxide RMTSRK RMTSLK Low Temperature Black Chrome Plating MTSTRK MTSTLK EN 1.4305 Equiv. — ·No hardening treatment is applied.

Lead Screw Accuracy Item Content Standard Chevron Tr Standard (Old TM Standard) Tolerance and Allowable Dimension JIS B 0217-1,2 Screw Accuracy (Threaded) 7e Nut Accuracy (Tapped) 7H Single Pitch Error ±0.02 Accumulated Pitch Error ±0.15/300 mm The Tr standard has the same standard dimensions as the old JIS TM standard (abolished). Dimensional tolerances are regulated for Tr standard. Refer to the table below for Lead Screw Specifications.

Standard Chevron Dimensions H = 1.866P, H1 = 0.5P, d2 = d - 0.5P d1 = d-P, D = d, D2 = d2, D1 = d1 Thread d: O.D. d1: Root Dia. d2: Effective Dia. Tapped D: Root Dia. D1: I.D. D2: Effective Dia. P: Pitch H1: Engage Height

Specification Table

● Runout Measurement Method

Alterations

Alterations	Flat Machining	Retaining Ring Groove	Wrench Flats	Coarse Tapping	Threaded	Square Chamfering	Keyway
					For Bearing Nut
Code	FE (E Part) FR (R Part)	AR (R Part) AE (E Part)	SE (E Part) SR (R Part)	MR (R Part) ME (E Part)	BQ (Q Part) BV (V Part) BR (R Part)	ZE (E Part) ZR (R Part)	KQ (Q Part) KV (V Part) KE (E Part) KR (R Part)
Spec.	FE,FR,FW,FY = 0.5 mm Increments FE = Applied on E part FR = Applied on R part Ordering Code FR5−FW10−FY1 [ ! ] Applicable to either E or R [ ! ]when E(R) ≤ 25 FY ≤ 1.0 [ ! ]when E(R) ≥ 26 FY ≤ 2.0 [ ! ]3 ≤ FW ≤ 20 [ ! ] FE(FR) = 0, or FE ≥ 2	AR, AE = 0.1 mm Increments AR ≤ S(F) - m - n ・ Type A AE ≤ T + S - m - n ・ Type B AE ≤ F + G - m - n For the m, n value, see the table below (For the m value, consider the tolerance.) Ordering Code AE13.3 AR = Applied on R part AE = Applied on E part R·E e Tolerance m + 0.14 0 n Machining Limit 7 4 +0.075 0 0.7 n ≥ 1.2 8 5 9 6 0.9 10 9.6 0 −0.09 1.15 n ≥ 1.5 12 11.5 0 −0.11 14 13.4 15 14.3 16 15.2 17 16.2 20 19 0 −0.21 1.35 25 23.9 30 28.6 1.65 35 33 40 38 0 −0.25 1.9 N ≥ 2 [!] Retaining ring is not included.	SE,SW,SY = 1 mm Increments SE = Applied on E part SR = Applied on R part [ ! ]Applicable to either E or R Ordering Code SE3−SW10−SY7 [ ! ] when E(R) < 15 SW ≥ E (R) −2 [ ! ]when 15 ≤ E(R) ≤ 25 SW ≥ E (R) −3 [ ! ] when 30 ≤ E(R) SW ≥ E (R) −5 [ ! ]3 ≤ SY ≤ 20 [ ! ] SE(SR) = 0, or SE(SR) ≥ 2	MR = Applied on R part ME = Applied on E part Ordering Code MR24 R·E ME·MR (Selection Range) 5·6 3 7·8 3·4 9·10 3·4·5 11·12 3·4·5·6 13 to 15 3·4·5·6·8 16 to 24 3·4·5·6·8·10 25 to 30 3·4·5·6·8·10·12·16 31 to 39 3·4·5·6·8·10·12·16·20 40 3·4·5·6·8·10·12·16·20·24·30 [NG] R, E = 4 not applicable [ ! ]When combining with an other alteration, do not specify this alteration in such a way that the shaft end thickness becomes less than 1 mm.	[ NG ]Q·V·R = 7·9·16 Not applicable [ ! ]BQ,BV,BR ≤ M × 3 [ ! ] BQ, BV, BR ≥ Pitch × 3 [ ! ] BQ, BV, BR ≤ F, S, T, G - Pitch × 3 Ordering Code BR20 BQ = Applied on Q part BV = Applied on V part BR = Applied on R part Q·V·R M × Pitch (Fine) 8 M8 × 1.0 10 M10 × 1.0 12 M12 × 1.0 14 M14 × 1.0 15 M15 × 1.0 17 M17 × 1.0 20 M20 × 1.0 25 M25 × 1.5 30 M30 × 1.5 35 M35 × 1.5 40 M40 × 1.5 Thread Tolerance Zone Class: 6 g	W, A = 1 mm Increments ZE = Applied on E part ZR = Applied on R part Ordering Code ZE12-W10-A8 [ ! ] Applicable to only one of either E or R [ ! ] Can be combined with Tapped Hole machining only on the same shaft [ ! ]5 ≤ A ≤ 20 [ ! ]S (F) ≥ A+2 [ ! ] ZR = R Specified, ZR > W [ ! ] ZE = E Specified, ZE > W ZE = E·ZR = R W 1 mm Increments 6 to 10 5 to 8 11 to 14 8 to 10 15 to 19 10 to 14 20 to 25 14 to 20 26 to 30 19 to 24 31 to 35 22 to 28 36 to 40 26 to 30 (E·R/2) √2 ≤ W Manufacturing may not be possible depending on the relationship between E/R and W.	KQ,KV,KE,KR,C = 1 mm Increments KQ = Applied on Q part KV = Applied on V part KE = Applied on E part KR = Applied on R part Ordering Code KQ8−C10 [ ! ] Applicable to only one of Q, V, E, or R [ ! ] Specify the C dimension not to be below b1 [ ! ]C ≤ 60 [ ! ]T (G) −C−KQ (KV) ≥ 2 [ ! ]S (F) −C−KE (KR) ≥ 2 [ ! ]KQ (KV·KE·KR) ≥ 2 [ ! ] When KQ (KV, KE, KR) = 0, keyway R will be eliminated on the shaft end side. Applicable Shaft End Dia. Q·V·E·R Keyway Dimension b1 t1 r1 Standard Dimension Tolerance (N9) Standard Dimension Tolerance 6· 7 2 −0.004 −0.029 1.2 +0.1 0 0.08 Up to 0.16 8 to 10 3 1.8 11·12 4 0 −0.030 2.5 13 to 17 5 3.0 0.16 Up to 0.25 18 to 22 6 3.5 23 to 30 8 0 −0.036 4.0 +0.2 0 31 to 38 10 5.0 0.25 Up to 0.40 39·40 12 0 −0.043 5.0 [!] Key materials are not included.

[!]Specify an alteration position to be 2 mm or more away from the stepped part. (Refer to the diagram in Caution (1))
[!] When adding multiple alterations, there must be 2 mm or more clearance between each machined part. (Refer to the diagram in Caution (2))
[!]When flat machining, wrench flats, square chamfering and keyway alterations are combined with each other, their orientations will be random. (Refer to the diagram in Caution (3))
[!] Do not specify multiple alterations in such a way that they overlap with each other in the rotating direction on the same shaft. (Refer to the diagram in Caution (4))
[ ! ] When two or more alterations are specified on a shaft, they may not be machined due to correlation.

Caution (1) Specify the alteration portion to be 2 mm or more away from the stepped part .

Caution (2) 2 mm or more is required for the clearance between multiple alterations .

Caution (3) When the multiple alterations are combined with each other, their orientations are random and thus, are not always aligned in a linear arrangement. (One example of this is shown in the diagram below.)　 For Alterations A and B added to the same shaft, as shown in the diagram above, their orientations are random and thus, there are some cases where they are not aligned in a linear arrangement.

Caution (4) Do not specify multiple alterations in such a way that they overlap with each other on the same shaft. (Any diagram as shown below is not acceptable.)     Overlapped portion of Alterations A and B