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Shafts - Hollow /One End Tapped Hollow with Wrench Flat (Part Numbers)

Shafts - Hollow /One End Tapped Hollow with Wrench Flat

"[Features] This shaft facilitates customers to arrange wiring, because the wire can be pierced into the inside of the shaft and contributes to weight saving of equipment, because the shaft is hollow."

Hollow with Wrench Flats/One End Tapped:Related Image
[ ! ]Features of Low Temp. Black Chrome Plating >>P.128
[ ! ]Low temp. black chrome plating is not applied to the inside of hollow shafts, taps, bored holes and lateral holes, and may rust.
[ ! ]Circularity, Straightness, Perpendicularity and Changes in Hardness >>P.111
[ ! ]Circularity and O.D. tolerance may not meet precision specification in areas approximately 10mm from wrench flats machined ends.
[ ! ]Annealing may lower hardness at shaft end machined areas (effective thread length + approx. 10mm).
Type[ M ]Material[ H ]Hardness[ S ]Surface Treatment
SPJTSPTRSUJ2 EquivalentEffective Hardened Depth of Induction Hardened >>P.112
SUJ2 Equivalent     58HRC~
SUS440C or 13Cr stainless 56HRC~
-
SSPJTSSPTRSUS440C or 13Cr stainless
PSPJTPSPTRSUJ2 EquivalentHard Chrome Plating - Plating Hardness: HV750 ~, Plating Thickness: 5µ or More
RSPJTRSPTRSUJ2 EquivalentLow Temp. Black Chrome Plating

Specifications

Part Number-L-M-SC
SPJT20
SPTR30
-
-
525
730
-
-
MT3
M20

-

SC8
Part NumberL
1mm Increment
M (Coarse Thread)D Tol.dC
TypeD
One End Tapped Hollow ShaftsSPJT
SSPJT
(* marked sizes only)
PSPJT
RSPJT
(D≤30,L≤500)
620~6003   -0.004
-0.012
20.5 or Less
*820~800 (300)4*5  -0.005
-0.014
 3 (3)0.5 or Less
*1020~800 (400)5*6  -0.005
-0.014
 4 (4)0.5 or Less
*1220~1000 (500) *8*T1(RC1/8)-0.006
-0.017
 6 (5)0.5 or Less
*1325~1000 (500) *10*T1(RC1/8)-0.006
-0.017
 7 (5)0.5 or Less
*1630~1200 (600) *12*T2(RC1/4)-0.006
-0.017
10 (6)0.5 or Less
*2030~1200 (800) *16*T3(RC3/8)-0.007
-0.020
14 (8)1.0 or Less
*2535~1200 (1000) *20 -0.007
-0.020
 16 (10)1.0 or Less
*3035~1500 (1000) *20 -0.007
-0.020
 17 (12)1.0 or Less
3535~1500  24 -0.009
-0.025
191.0 or Less
4050~1500  2430-0.009
-0.025
201.0 or Less
5060~1500  30 -0.009
-0.025
261.0 or Less

Part NumberL
1mm Increment
M (Coarse Thread)Wrench Flats DimensionsD Tol.dC
TypeDSCW1
One End Tapped Hollow Shafts with Wrench FlatsSPTR
SSPTR
(* marked sizes only)
PSPTR
RSPTR
(D≤30,L≤500)
620~6003    SC=1mm Increment
[ ! ]When D≤25
 SC+1≤L SC≥Mx2
[ ! ]When D≥30
 SC+1≤L
 
SC≥0


[ ! ]Details of Wrench Flats P.112
58-0.004
-0.012
20.5 or Less
*820~800 (300)4*5  78-0.005
-0.014
 3 (3)0.5 or Less
*1020~800 (400)5*6  88-0.005
-0.014
 4 (4)0.5 or Less
*1220~1000 (500) *8*T1(RC1/8)1010-0.006
-0.017
 6 (5)0.5 or Less
*1325~1000 (500) *10*T1(RC1/8)1110-0.006
-0.017
 7 (5)0.5 or Less
*1630~1200 (600) *12*T2(RC1/4)1410-0.006
-0.017
10 (6)0.5 or Less
*2030~1200 (800) *16*T3(RC3/8)1710-0.007
-0.020
14 (8)1.0 or Less
*2535~1200 (1000) *20 2210-0.007
-0.020
 16 (10)1.0 or Less
*3035~1500 (1000) *20 2715-0.007
-0.020
 17 (12)1.0 or Less
3535~1500  24 3015-0.009
-0.025
191.0 or Less
4050~1500  24303620-0.009
-0.025
201.0 or Less
5060~1500  30 4120-0.009
-0.025
261.0 or Less
[ ! ]When T1, T2 or T3 is selected as M, tapered thread machining is applied. (Ordering Code: MT1) [ ! ]When Mx2.5+4≥L, tap pilot holes may go through.
[ ! ]Only * marked D and M dimensions are applicable to Stainless Steel Shafts. L and d dimensions in ( ) are applicable.

Alterations

Hollow with Wrench Flats/One End Tapped:Related Image

Part Number 

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Part Number
Part NumberMinimum order quantityVolume DiscountDays to ShipRoHSMaterial Surface Treatment Shaft Dia. D
(Ø)
Length L
(mm)
Hardness Add Wrench Flats at One Location [SC]
(mm)
Change Tapped Thread M to Tapered One [MT] 1(RC1/8) 2(RC1/4) 3(RC3/8) Threaded (Coarse) [M]
(mm)

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More Information

Hollow with Wrench Flats/One End Tapped:Related Image
[ ! ]About Hollow Shaft Wall Thickness Deviations, please see >> P.111

Example

Hollow with Wrench Flats/One End Tapped:Related Image
 

Basic Information

Basic Shape Hollow End Shape (Left) Tapped End Shape (Right) No Machining
Heat Treatment Induction Hardened Shaft Fit Tolerance g6

Tech Support

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