Timing Pulleys XL Type

QFor Timing Belts, refer to P.1177, for Keyless Timing Pulleys, refer to WP.1138, for Idlers with Teeth, refer to WP.1159
Part Number M Material QInch Hole Specifications - ATP / MTP / MTPB / MTPP / STP

Belt Width 6.4mm Belt Width 7.9mm Belt Width 9.5mm Belt Width 12.7mm S No. Nominal Dimension(mm) 6 Express A $8.00/piece D P.88
(1/4inch) (5/16inch) (3/8inch) (1/2inch) Pulley Flange Surface Treatment A 1/8 3.175 ENon-Returnable P.88 EA flat charge of $21.60 for 3 or more identical pieces
A: 7.5 W: 12.5 L: 21 A: 9 W: 14 L: 23 A: 11 W: 16 L: 25 A: 14 W: 19 L: 28 B 3/16 4.763
ATP_ _XL025 ATP_ _XL031 ATP_ _XL037 ATP_ _XL050 2017 Clear Anodize C 1/4 6.350 - BTP / KTP / NTP
5052
BTP_ _XL025 BTP_ _XL031 BTP_ _XL037 BTP_ _XL050 Aluminum Black Anodize D 5/16 7.938
KTP_ _XL025 KTP_ _XL031 KTP_ _XL037 KTP_ _XL050 Alloy
Aluminum
Hard Clear Anodize* E 3/8 9.525 8 ENon-Returnable P.88
NTP_ _XL025 NTP_ _XL031 NTP_ _XL037 NTP_ _XL050 (Duralumin) Alloy Electroless Nickel Plating F 1/2 12.700
MTP_ _XL025 - MTP_ _XL037 MTP_ _XL050 - G 5/8 15.875 EThe prices of BTP, KTP and MTPB are the body prices in the table multiplied by 1.1, while the
1045 Carbon Low Carbon QVolume Discount Rate
MTPB_ _XL025 - MTPB_ _XL037 MTPB_ _XL050 Black Oxide H 3/4 19.050 Quantity 1~4 5~9 10~14 15~29 30~50
prices of NTP and MTPP are multiplied by 1.2.
Steel Steel J 7/8 22.225 EUnit price is the sum of Body Price and Shaft Bore Machining Charge. (Except STP)
MTPP_ _XL025 - MTPP_ _XL037 MTPP_ _XL050 Electroless Nickel Plating Rate Unit Price 5% 10% 15% 30%
EUnit Price of STP is the Body Price and Qty. Discount Rate is not applicable to Shaft Bore
STP_ _XL025 - STP_ _XL037 STP_ _XL050 304 Stainless Steel 304 Stainless Steel - K 1 25.400 Days to Ship Standard +12 Days
Machining Charge.
L 1-1/4 31.750 EPlease request a quotation for orders of 30 or more of STP. EH, HU bore machining is free of charge.
EFlanges are installed. Set screws are included with P, N & C bore hole specification. *Hard Anodize Treatment: Film Hardness 300HV~ EFor larger quantity orders "Days to Ship" may differ from published catalog term.D P.87
M 1-3/8 34.925
Tooth Profile •Pulley Shape N 1-1/2 38.100
(ISO Standard Rack Dimensions) *W
*L P 1-5/8 41.275
A Shape B Shape
Q 1-3/4 44.450
2.5 *A 2.5 *W 2−M*
25° 25° W/2 2−M* 2.5 *A 2.5 5 R 1-7/8 47.625
S 2 50.800
.61

Body Price Shaft Bore Machining Charge ( Body Price+ )

QTapped Hole Dimensions

ATP(x1.0)- BTP / KTP /(x1.1) NTP(x1.2) MTP(x1.0)- MTPB(x1.1)- MTPP(x1.2) STP(x1.0) ATP / BTP / KTP / NTP
P.D.

R0.61

Teeth STP
1.27
(Shaft Bore: P / N / C) XL025 XL031 XL037 XL050 XL025 XL037 XL050 XL025 XL037 XL050 MTP / MTPB / MTPP

O.D.
P.D.
O.D.
P.D.

6.3 6.3
dH7

dH7

D
E
F

AShape BShape AShape BShape AShape BShape AShape BShape AShape BShape AShape BShape AShape BShape AShape BShape AShape BShape AShape BShape P / PU CN // VNU Y P / PU CN // VNU Y

E
F
dH7 M Accessory /F /F

Shaft Bore Inner Dia. (Coarse) Set Screw 10 7.20 7.60 7.70 8.10 8.30 8.60 10.90 11.60 8.20 8.50 9.30 9.70 12.40 13.00 4.00 5.70 10.00
4 M3 M3x3 11 7.20 7.60 7.70 8.10 8.30 8.60 10.90 11.70 8.20 8.60 9.30 9.70 12.40 13.00 4.00 5.70 10.00
t1.6 t1.6 5~12 M4 M4x3 12 7.20 7.80 7.70 8.40 8.30 8.90 10.90 12.00 8.20 8.80 9.30 10.10 12.40 13.30 - - - - - - 4.10 5.90 10.50 - - -
13~17 M5 M5x4 14 7.20 8.30 7.70 9.00 8.30 9.50 10.90 12.50 8.20 9.40 9.30 10.50 12.40 13.80 4.10 5.90 11.00
*For Shaft Bore Specifications H (Round Hole), V and F (Stepped Hole) and Y (Both Sides Stepped Hole), no tapped hole is machined. 18~30 M6 M6x5 15 7.20 8.60 7.70 9.20 8.30 9.70 10.90 12.80 8.20 9.60 9.30 10.80 12.40 14.00 4.30 5.90 11.00
16 7.20 8.60 7.70 9.20 8.30 9.70 11.40 12.80 8.20 9.60 9.50 10.80 12.70 14.00 10.60 12.50 12.30 14.10 16.60 18.40 4.30 5.90 11.00 5.20 7.10 13.20
18 7.60 8.80 8.20 9.50 8.60 10.00 11.70 13.00 8.60 9.80 9.70 11.10 13.00 14.30 11.10 12.80 12.70 14.40 16.90 18.60 4.40 6.00 11.10 5.30 7.20 13.20
•Shaft Bore Specs. EThe shaft bore may not have surface treatment. 19 7.90 9.00 8.50 9.50 9.00 10.10 12.10 13.20 8.90 10.10 10.10 11.30 13.30 14.50 - - - - - - 4.40 6.00 11.10 - - -
H Round Hole P Round Hole+Tap N New JIS Keywayed Bore + Tap V Stepped Hole F Stepped Hole Y Both Ends Stepped Hole 20 7.90 9.30 8.50 9.80 9.00 10.40 12.10 13.30 8.90 10.20 10.10 11.40 13.30 14.70 11.60 13.20 13.10 14.90 17.40 19.10 4.60 6.40 11.60 5.60 7.70 14.00
HU Inch Round Hole PU Inch Round Hole+Tap NU Inch New JIS Key Groove Hole + Tap (counterbored holes on the hub side) 21 7.90 9.50 8.50 10.00 9.00 10.60 12.10 13.70 8.90 10.40 10.10 11.70 13.30 14.90 - - - - - - 4.60 6.40 11.60 - - -
22 8.30 9.70 8.90 10.20 9.50 10.80 12.50 14.00 9.40 10.80 10.50 12.00 13.80 15.20 12.20 14.00 13.80 15.60 17.90 19.80 4.70 6.60 11.90 5.70 8.00 14.40
C Old JIS Keywayed Bore + Tap 24 8.30 10.40 8.90 10.80 9.50 11.40 12.50 14.50 9.40 11.30 10.50 12.60 13.80 15.80 12.20 14.80 13.80 16.40 17.90 20.60 4.70 6.60 11.90 5.70 8.00 14.40
25 8.60 11.20 9.10 11.50 9.60 12.20 12.70 15.30 9.50 12.10 10.80 13.30 14.00 16.60 12.30 15.70 14.00 17.40 18.30 21.60 4.80 6.80 12.10 5.80 8.20 14.60
26 8.60 11.40 9.10 11.80 9.60 12.50 12.70 15.50 9.50 12.30 10.80 13.60 14.00 16.80 - - - - - - 4.80 7.10 12.50 - - -
120

28 8.80 12.20 9.30 12.60 9.90 13.30 13.00 16.50 9.70 13.30 11.00 14.50 14.20 17.70 12.70 17.30 14.30 18.90 18.50 23.10 5.00 7.30 12.80 6.00 8.80 15.40

QH7

RH7
ZH7

ZH7
dH7

dH7
°

d
30 8.80 13.00 9.30 13.30 9.90 14.00 13.00 17.10 9.70 14.00 11.00 15.10 14.20 18.40 12.70 18.20 14.30 19.70 18.50 23.90 5.00 7.30 12.80 6.00 8.80 15.40
32 8.80 13.60 9.30 13.90 10.00 14.70 13.00 17.70 9.80 14.60 11.10 15.80 14.30 19.10 12.80 19.00 14.40 20.60 18.60 24.80 5.20 7.60 13.20 6.30 9.20 16.00
34 8.80 14.10 9.30 14.50 10.00 15.30 13.00 18.40 9.70 15.10 11.10 16.40 14.30 19.60 - - - - - - 5.20 7.60 13.20 - - -
36 9.40 14.80 9.90 15.00 10.40 15.80 13.50 18.90 10.40 15.80 11.50 16.90 14.80 20.20 14.90 21.60 16.60 23.30 20.80 27.50 5.30 7.90 13.60 6.40 9.50 16.40
dH7 dH7 dH7 J±0.1 J±0.1 S T 38 9.40 15.30 9.90 15.60 10.40 16.50 13.50 19.40 10.40 16.30 11.50 17.60 14.80 20.80 - - - - - - 5.30 7.90 13.60 - - -
*No tapped holes and set **ForA Shape pulley, the screw holes are set at XA Shape with 15 or less teeth and nominal width *No tapped holes and set * Applicable to B Shape only. * Applicable to A Shape only. 40 10.50 15.70 11.10 15.80 11.60 16.70 14.70 19.80 11.50 16.60 12.70 17.90 15.90 21.20 14.90 21.60 16.60 23.30 20.80 27.50 5.60 8.20 13.90 6.80 9.90 16.60
screws. around 120° to keep away from peaks. 025 has keywayed bores only, not tapped holes. screws. * No tapped holes and set screws. * Shaft Bore Dia. D is general
XNot applicable to A Shape with 15 or *For Keyway Dimension Details, refer to tolerance.
42 10.50 16.70 11.10 17.00 11.60 17.90 14.70 20.90 11.50 17.70 12.70 19.00 15.90 22.20 5.60 8.20 13.90
less teeth and nominal width 025. P.1096 * No tapped holes and set screws. 44 11.20 17.90 11.70 18.10 12.20 19.10 15.30 22.10 12.10 18.90 13.30 20.20 16.60 23.40 6.00 8.90 14.90
46 11.20 18.50 11.70 18.90 12.20 19.50 15.30 22.60 12.10 19.40 13.30 20.60 16.60 23.90 6.00 8.90 14.90
Part Number Shaft Bore Spec. (1mm Increment) 48 12.70 19.20 13.30 19.60 13.80 20.30 16.80 23.40 13.70 20.20 14.90 21.40 18.10 24.70 - - - - - - 6.80 9.90 16.20 - - -
H P N/C HU PU NU V/F Y 50 12.70 19.60 13.30 20.00 13.80 20.70 16.80 23.80 13.70 20.50 14.90 21.80 18.10 25.00 6.80 9.90 16.20
Type Pulley Shaft Bore P.D. O.D. D F E 60 16.40 22.10 17.20 22.50 17.50 23.20 20.50 26.30 17.30 23.00 18.50 24.40 21.80 27.60 8.40 12.00 18.90
J
Type Teeth Nominal Shape Specifications dH7 dH7 ZH7 (0.1mm Increment) d QH7 / RH7 S / T 72 18.10 27.00 19.00 27.20 19.20 28.10 22.30 31.10 19.10 28.00 20.30 29.20 23.60 32.40 9.20 13.80 21.20
Width
AShape BShape AShape BShape AShape BShape AShape BShape AShape BShape AShape BShape AShape BShape AShape BShape AShape-BShape AShape AShape AShape
Part Number - Pulley Shape - Shaft Bore Spec. • Inner Dia. - Z - J - Q - R - S - T - (KC90 / QSC / QFC / QTC / KSC / KFC / KTC / BC / NFC / RFC / LFC / FC / TPC / SLH)
10 4~7 4, 5, 6 - 4, 5, 6 - - B·C B - B - - 4, 5 4 6, 7 6 4, 5 6, 7 16.17 15.66
10 24 12 ATP36XL037 - B - H15 - KSC25 - K5
11 4~7 4, 5, 6 - 4, 5, 6 - - B·C B - B - - 4, 5 4 6, 7 6 4, 5 6, 7 17.79 17.28
12 4~10 4~8 4~6 4, 5, 6 - - B~E B~D B B - - 4~8 4, 5, 6 6~10 6, 7, 8 4~8 6~10 19.40 18.90 12 25 15
14 5~13 5~11 5~9 5~8 8 8 C~F C~E C · D C · D D D 5~11 5~9 7~13 7~11 5~11 7~13 22.64 22.13 15 28 18 Alterations Set Screw Angle Side Tapped Hole Side Through Hole
15 XL025 5~13 5~13 5~11 5~10 8~10 8, 10 C~F C~F C~E C~E D · E D · E 5~11 5~10 7~13 7~12 5~11 7~13 24.26 23.75
16* *A :7.5
17 32 20 Code KC90 QSC / QFC / QTC KSC / KFC / KTC
H 5~13 5~13 5~13 5~10 8~13 8, 10 C~F C~F C~F C~E D~F D · E 5~11 5~10 7~13 7~12 5~12 7~14 25.87 25.36
18* *W :12.5 6~16 6~16 6~15 6~13 8~15 8~13 C~G C~G C~F C~F D~F D~F 6~14 6~14 8~16 8~16 6~14 8~17 29.11 28.60 Changes an angle of Machines tapped hole on the side surface of hub side. (QSC, QFC, QTC: 1mm Increment) Machines through hole on the side surface of hub side. (KSC, KFC, KTC: 1mm Increment)
21 36 24 set screw to 90°. EThickness required: minimum 2mm ESpecify KC90 when selecting QFC for Shaft Bore EThickness required: minimum 2mm
(2017 Aluminum Alloy) 19 *L :21 HU 6~16 6~16 6~15 6~15 8~15 8~13 C~G C~G C~F C~F D~F D~F 6~14 6~14 8~16 8~16 6~14 8~17 30.72 30.22 ESpecify KC90 when selecting KFC for
EFor A shape pulley, the A Shape: d+M+4≤QSC(QFC / QTC)≤E-(M+4) specifications P, N and C. A Shape: d+K+4≤KSC(KFC / KTC)≤E-(K+4) Shaft Bore Specifications P, N and C.
ATP 20* 8~19 8~19 8~16 8~15 8~16 8~15 E~G E~G E~G E · F E~G E · F 8~17 8~17 10~19 10~19 8~17 10~19 32.34 31.83
24 40 27 set screw hole is set B Shape: d+M+4≤QSC(QFC / QTC)≤D-(M+4) EThe pilot hole for tapping may go through. B Shape: d+K+4≤KSC(KFC / KTC)≤D-(K+4) XNot applicable to Shaft Bore
BTP 21 P 8~19 8~19 8~18 8~16 8~18 8~16 E~G E~G E~G E~G E~G E~G 8~17 8~17 10~19 10~19 8~17 10~19 33.96 33.45 XNot applicable to Shaft Bore Ed=Z when the Shaft Bore Specifications is V. Specifications F or Y.
22* XL031 8~22 8~22 8~20 8~17 8~20 8~18 E~H E~H E~H E~G E~H E~G 8~20 8~20 10~23 10~23 8~20 10~22 35.57 35.07 at around 90° to keep Ed=Z when the Shaft Bore Specifications is V.
Specifications F or Y. (6 Places) (4 Places) (3 Places) XWhen the Shaft Bore Specifications
KTP 24* *A :9 PU 8~22 8~22 8~22 8~17 8~22 8~18 E~H E~H E~H E~G E~H E~G 8~20 8~20 10~23 10~23 8~20 10~22 38.81 38.30
26 45 30 away from peaks. M×2 (6 Places) (4 Places) (3 Places)
XWhen the Shaft Bore Specifications are P, N or C, KSC is not applicable.
NTP (6QSC
Places) (4QFC
Places) (3QTC
Places) (6 KSC
Places) (4 KFC
Places) KTC
(3 Places)
25* *W :14 8~27 8~26 8~22 8~19 8~22 8~19 E~K E~K E~H E~G E~H E~G 8~25 8~24 10~27 10~26 (For A Shape) 8~25 10~27 40.43 39.92 Spec. M×2 are P, N or C, QSC is not applicable. K (Through Hole Dia.) Selection
26 *L :23 A N 8~27 8~26 8~23 8~20 8~23 8~20 E~K E~K E~J E~H E~J E~H 8~25 8~24 10~27 10~26 2.0≤J≤W-2.0 8~25 10~27 3~8 42.01 41.53
30 48 35 90
° QSC QFC QTC M Selection M3,M4,M5,M6,M8 KSC KFC KTC K4.0~K13.0
(1045 Carbon Steel) Ordering Code QFC28-M4 (0.5mm Increment)
28* B NU 8~32 8~31 8~26 8~25 8~25 8~20 E~L E~K E~K E~J E~J E~H 8~30 8~29 10~32 10~31 (For B Shape) 8~30 10~32 S+T≤W-3 45.28 44.77 90
MTP 30* 10~32 8~31 10~30 8~25 10~30 8~20 F~L E~K F~K E~J F~H E~H 10~30 8~29 12~32 10~31 2.0≤J≤L-2.0 10~30 12~32 48.51 48.00
35 55 40 ° Ordering Code
KSC20-K5
MTPB 32* XL037 *A :11 C 10~37 10~36 10~30 10~30 10~30 10~25 F~M F~M F~K F~K F~K F~J 10~35 10~34 12~37 12~36 10~35 12~37 51.74 51.24
MTPP 34 *W :16 10~38 10~36 10~30 10~30 10~30 10~25 F~M F~M F~K F~K F~K F~J 10~35 10~34 12~37 12~36 10~35 12~37 54.98 54.47
61 45 6−M 4−M 3−M 6−K Through 4−K Through 3−K Through
40 3−K Through
36* *L :25 V 10~42 10~36 10~30 10~30 10~30 10~25 F~P F~M F~K F~K F~K F~J 10~40 10~34 12~42 12~36 10~40 12~42 58.21 57.70 6−M 4−M 3−M 6−K Through 4−K Through
(304 Stainless Steel) 38 67 50
10~43 10~36 10~30 10~30 10~30 10~25 F~S F~M F~K F~K F~K F~J 10~40 10~34 12~42 12~36 10~40 12~42 61.45 60.94
STP 40* XL050 F 10~50 10~36 10~30 10~30 10~30 10~25 F~S F~M F~K F~K F~K F~J 10~48 10~34 12~50 12~36 10~48 12~50 64.68 64.17 Price Adder Free QSC:7.00 QFC, QTC:5.00 KSC:10.00 KFC, KTC:7.00
74 58
42 *A :14 10~50 10~36 10~30 10~30 10~30 10~25 F~S F~M F~K F~K F~K F~J 10~48 10~34 12~50 12~36 10~48 12~50 67.91 67.41
44 *W :19 Y 10~52 10~36 10~30 10~30 10~30 10~25 F~S F~M F~K F~K F~K F~J 10~50 10~34 12~52 12~36 10~50 12~52 71.15 70.64 40 Alterations Boss Cut No Flange Single Flange Flange Cut Tapped Hole Dimensions Set Screw Length
80 60
46 *L :28 10~55 10~36 10~30 10~30 10~30 10~25 F~S F~M F~K F~K F~K F~J 10~50 10~34 12~52 12~36 10~50 12~52 74.38 73.87 Code BC NFC RFC / LFC FC TPC SLH
48 10~59 10~36 10~30 10~30 10~30 10~25 F~S F~M F~K F~K F~K F~J 10~57 10~34 12~59 12~36 10~57 12~59 77.62 77.11 87 67
50 10~59 10~36 10~30 10~30 10~30 10~25 F~S F~M F~K F~K F~K F~J 10~57 10~34 12~59 12~36 10~57 12~59 80.85 80.34 87 67
Cuts the hub length in 0.5mm increment. Flange is not installed. Flange installed on the hub Lowers flange by cutting. Changes the tapped hole dimension. Changes the length of the included set screws.
EShaft Bore specification H, V, F: 3≤BC≤L-W (Flange included) side (RFC) or the opposite FC: 0.5mm Increment EApplicable to Shaft Bore specification P, N, C only. EApplicable to Shaft Bore specification P, N, C only.
60 10~76 10~36 10~30 10~30 10~30 10~25 F~S F~M F~K F~K F~K F~J 10~74 10~34 12~76 12~36 10~74 12~76 97.01 96.51 40 104 84 EShaft Bore specification P, N, C: M+3≤BC≤L-W side (LFC) only. XNot applicable to Stainless Steel Type. XNot applicable to Stainless Steel Type.
72 10~80 10~36 10~30 10~30 10~30 10~25 F~S F~M F~K F~K F~K F~J 10~80 10~34 12~94 12~36 10~75 12~94 116.43 115.92 123 102 ESame on A Shape ENo surface treatment applied on flange circumference. Set Screw SLH
Ordering Code BC6.5 M TPC
EFor inch hole dimensions detail information refer to next page. XShaft Bore Dia. 8, 9, 11, 13, 14, 17, 20~30 are not available for Shaft Bore specification C. BC/2 EClear anodized products may M3 M4 M3x3 6
ESTP is available for * marked No. of teeth only. XShaft Bore Dia. 9 is not available for Shaft Bore specification N. Spec. not have surface treatment on M4 M3 / M5 M4x3 5, 8
EA Shape with 15 or less teeth and nominal width 025 is not available for shaft bore specification P, and no tapped holes for shaft bore specifications N and C. the embossed plane. RFC LFC M5 M4 / M6 M5x4 6, 10
EZ-d≥2 for Shaft Bore Specification V. EQ(R)-d≥2 for shaft bore specification Y. XNot available for A Shape. EFC≥(O.D.)+2 M6 M5 M6x5 10

FC
F
EShaft Bore Dia. 6.35 is selectable for Shaft Bore specifications H, P, V and F.Q (R)-d≥2 for shaft bore specification Y. BC EFC≤F-2
ESelect NK10 when New JIS Keywayed Bore + Tap with shaft bore diameter of 10 and keyway width 4.0mm (height 1.8mm) is requested.DP.1096 Ordering Code FC35 Ordering Code SLH10
Ordering Code TPC5

Part Number - Pulley Shape - Shaft Bore Spec. / Inner Dia. - Z - J - Q - R - S - T Price Adder 5.00 Free Free 3.00 Free Free
(Shaft Bore : H / P / N / C) ATP24XL037 - B - N10
(Shaft Bore: V / F) ATP60XL050 - A - V20 - Z28 - J16.0
1107 (Shaft Bore: Y) ATP40XL050 - A - Y20 - Q32 - R32 - S7 - T7 1108