Tsubaki Products

Double Pitch sprocket Fit bore

Finished shaft bore, keyway and tapped holes are machined by us before shipping.
Can immediately be used as is with no additional troublesome finishing.
You can freely select from a set of machining contents.

Features

・The content of shaft bore and keyway machining is coded with the product model name, so that the customer's requirements can be accurately transferred.
・Fit Bore drawing library allows customers to check the contents of their requirements in advance with drawings. (You can see it from the banner above. )
・Shaft bore, keyway and tapped holes have already been machined, so the product can be used as is after arrival at the customer's premises.

Note) When selecting sprocket specifications

・It is necessary to select a sprocket specification that corresponds to the customer's operating environment and the chain specification used. For details, please refer to the compatibility table for each chain and sprocket.

ベアリング穴加工をご要望の場合はこちら If you require a material or surface treatment other than steel or stainless steel, please contact us as this will be made-to-order product.

Catalogs ・Instruction Manuals

Model No. examples

Double Pitch sprocket

RF2060S-1B1100T

030

M06

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Main Body Code

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Shaft Bore Diameter
mm

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｜
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｜
｜

｜
｜
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Keyway Width
mm

｜
｜
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Tap size

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Surface treatment
(5)

Tooth hardening
None ：Teeth not hardened
Q：hardened teeth specifications

Shaft bore tolerance
(1)

Keyway tolerance
(3)

tap hole machining package
(4)

Shaft bore chamfer
(2)

(1) Shaft bore tolerance	(2) Shaft bore chamfer	(3) Keyway tolerance	(4) tap hole machining package	(5) Surface treatment
H：H7 G：G7 M：M7	N：Tsubaki standard A：C1 B：C2 C：C3	W：None J：New JIS Js9 P：New JIS P9 F：Old JIS F7 E：Old JIS E9		Blank: No treatment B：Coated black K：Electroless nickel phosphorus plating C：Electrogalvanization (Trivalent chromate treatment )

List of Models

Quick delivery models

Since it is an additional machining from the pilot bore type stock item, please check the stock when ordering.

◎…Models to which a surface treatment can be applied 　　○…Models for which shaft bores can be machined 　　　　△…Models for which shaft bores can be machined (Restrictions on the machining content )
The blue part is models with hardened teeth 　　The light blue part is models without hardened teeth 　　The colorless part is models without hardened teeth (but optional teeth hardening can be applied)

Double Pitch sprocket

Roller type Model / Teeth	steel														Stainless
	S							R							S				R
	RF2040S	RF2050S	RF2060S	RF2080S	RF2100S	RF2120S	RF2160S	RF2040R	RF2050R	RF2060R	RF2080R	RF2100R	RF2120R	RF2160R	RF2040S	RF2050S	RF2060S	RF2080S	RF2040R	RF2050R	RF2060R
912T	◎	◎	◎	◎	◎	◎	◎								○	○	○	○
1000T								◎	◎	◎	◎
1012T	◎	◎	◎	◎											○	○	○	○
1100T								◎	◎	◎	◎	◎	○	○					○	○	○
1112T	◎	◎	◎	◎											○	○	○	○
1200T	◎	◎	◎	◎				◎	◎	◎	◎				○	○	○	○	○	○	○
1212T	◎	◎	◎	◎											○	○	○	○
1300T								◎	◎	◎	◎								○	○	○
1400T								◎	◎	◎	◎
1500T								◎	◎	◎	◎
1600T								◎	◎	◎	◎

Sprockets for Double Plus Free Flow Chains

Model / Teeth	steel
Model / Teeth	RF2030VRP	RF2040VRP	RF2050VRP	RF2060VRP	RF2080VRP
10T	○	○	○	○	△

Sprockets

Number of teeth	steel							Stainless
Number of teeth	TT	TTP	TTU	TTUP	TPF	TPUSR	TPUN	TPUSR
800T							◎
1000T				◎			◎
1012T	◎	◎	◎	◎	◎
1013T
1100T				◎
1112T	◎	◎	◎	◎	◎
1200T				◎			◎
1212T	◎	◎	◎	◎	◎
1300T				◎
1500T						◎		○

Machining contents

※Click the name for more information.

Finishing range

shaft bore machining (L)	Keyway machining (K)	Tap hole machining (D)

・Machined dimensions are integers only in 1mm units Inch dimensions are not applicable ・Machining tolerance ・・・Selectable H7 ・ G7 ・ M7	・Parallel keyway only ・Machining tolerance ・・・Selectable Js9 ・ F7 ・ P9 ・ E9 Keyway width and depth are in accordance with JIS standards	・Machining size Selectable ・Machining location (up to 2 locations) Selectable (See the figure below for the position ) ・With set screw

shaft bore machining (L)

Keyway machining (K)

Tap hole machining (D)

・Machined dimensions are integers only in 1mm units
Inch dimensions are not applicable

・Machining tolerance ・・・Selectable
H7 ・ G7 ・ M7

・Parallel keyway only

・Machining tolerance ・・・Selectable
Js9 ・ F7 ・ P9 ・ E9
Keyway width and depth are in accordance with JIS standards

・Machining size Selectable

・Machining location (up to 2 locations) Selectable
(See the figure below for the position )

・With set screw

tap hole layout

B=A/2
(May differ depending on welding specifications. )

Long tapped holes will
be counterbored.

Set screw package

・Steel cup point set screws with hexagonal hole

・Use plated set screws, or stainless steel screws with stainless steel sprockets

Shaft bore machining dimensions list

For Js9/P9 (new JIS standards)

Applicable Shaft Bore Diameter (mm)	Keyway Width (mm)	Tsubaki standard size	Available sizes
10～12	4	M4	---
12～17	5	M5	M4
17～22	6	M6	M5
22～30	8	M6	M5, M8
30～38	10	M8	M6, M10
38～44	12	M8	M6, M10
44～50	14	M8	M6, M10
50～58	16	M10	M8, M12
58～65	18	M10	M8, M12
65～75	20	M12	M10, M16
75～85	22	M12	M10, M16
85～95	25	M16	M12, M20
95～110	28	M16	M12, M20
110～130	32	M20	M16
130～150	36	M20	M16
150～170	40	M20	M16
170～(200)	45	M24	M20

If there is no keyway, the chamfer size of the shaft hole will be 1/2 of the table below.

For F7/E9 (old JIS standards)

Applicable Shaft Bore Diameter (mm)	Keyway Width (mm)	Tsubaki standard size	Available sizes
10～13	4	M4	---
14～20	5	M5	M4
21～30	7	M6	M5
31～40	10	M8	M6, M10
41～50	12	M8	M6, M10
51～60	15	M8	M6, M10
61～70	18	M10	M8, M12
71～80	20	M12	M10, M16
81～95	24	M12	M10, M16
96～110	28	M16	M12, M20
111～125	32	M20	M16
126～140	35	M20	M16
141～160	38	M20	M16
161～170	42	M20	M16

Tsubaki standard chamfer

If there is no keyway, use half values of the table above.
Chamfering specify is restricted when the specified chamfer overlaps with the Tsubaki standard shaft bore chamfer.
Shaft Bore Diameter	Chamfer amount
10～20	1
21～32	1.2
33～50	1.6
51～80	2.5
81～170	3

Selectable chamfer

Determined from keyway depth (chamfer amount not exceeding keyway depth)
Shaft Bore Diameter	Chamfer code
10～17	N	A	-	-
18～44	N	A	B	-
45～170	N	A	B	C

Double Pitch Chain / Top Chain / Double Plus Chain Sprocket Bore Finishing and Tapped Hole Positions and Details

(Note ) The tap hole angle of TT type (for top chain) may differ from the above table depending on the number of teeth.
	Finishing Category			Double Pitch Chains	TT	For Double Plus Free Flow Chain
	Shaft Bore	Key	Tap	Double Pitch Chains	TT	For Double Plus Free Flow Chain
I		---	0
II			0
III			1
			2
			3
			4
			5
IV		---	1
			2
			3
			4
			5

Surface treatment

In the case of black oxide coating, it is also processed in the additional machining part (shaft bore, keyway, tapped hole). Other two specifications are not processed in the additional machining section.
Code displayed when ordering	Package
B	Coated black
K	Electroless nickel phosphorus plating
C	Electrogalvanized trivalent chromate

others

Limitations

Limitations	Delivery drawings cannot be submitted. (Please use the drawing download service. ) Please contact us for inspection report and mill sheet. (If submission is required, it will be treated as a made-to-order item.

TSUBAKI Power Transmission Products Information Site

Double Pitch sprocket Fit bore

Features

Catalogs ・Instruction Manuals

Model No. examples

List of Models

Quick delivery models

Double Pitch sprocket

Sprockets for Double Plus Free Flow Chains

Sprockets

Machining contents

For Js9/P9 (new JIS standards)

For F7/E9 (old JIS standards)

others