Ring Gear - Cam Ring&Roller Pinion (Circular Arc Ring)

A circular arc ring-type cam ring with a trochoidal tooth profile. Manufacturing the ring in circular arcs makes it possible to accommodate an infinite radius with the minimum space required, realizing large-diameter hollow shapes.

Its combination with a roller pinion realizes motion transmission via complete rolling, enabling highly accurate positioning and light rotational-fluctuation motions with Zero-Backlash.

Technical Information

TCG Ring(Circular Arc Ring) RGD&CPA RDC&CPC series

Highlights

Zero-Backlash

The teeth always mesh via two or three portions and eliminate backlash when rotated in one or another direction.

Circular Arc Rings and Large Diameter

Ring diameter up to tens of meters can be realized by combining the circular arc rings or can use only the necessary degrees.

High Accuracy

The combination of cam gear and roller pinion makes a positioning accuracy and feeding accuracy (rotation-linearity ratio) as nearly as the ball-screw.

Low noise, Low vibration

Rollers of Pinion supported by bearings roll smoothly on the trochoid gear. Thereby tooth striking noise, rotating noise and also vibration are reduced.

Low dust

Due to the smooth rotation, the structure dispenses with a least amount of heat and dust generated and cope with a clean room operation.

No need for applying the lubricant

Combined with the TCG lubrication supply system TLS, No need for applying the lubricant, completely maintenance-free are realized.

Roller Pinion

CPA	1
1610B	2
1	3
A	4
L	5

1.Product Name	CPA / CPC series
2.Frame number	CPA:1010B,1210B,1610B,2010B,2510B,3212B CPC:3212A,4012B
3.Surface treatment	1:No surface treatment (standard) 2:Black chromium plating 3:Fluorine black chromium plating *Models 10 and 12 are 1 and 2 only.
4.Accuracy	A:Standard grade B:Premium grade
5.TLS TCG Lubrication Systems	No sign：None L：Yes TLS Technical Information

Circular Arc Rings

RGD	1
1610A	2
1	3
A	4
C
140	5
A
72	6

1.Product Name	RGD / RDC series
2.Frame number	RGD:1010A,1210A,1610A,2010A,2510A,3212A RDC:3212A,4012A
3.Surface treatment	1:No surface treatment (standard) 2:Black chromium plating
4.Accuracy	A:Standard grade B:Premium grade
5.Number of tooth	Please refer to the specification table or outline dimensional drawing.(Catalog: P31）*The number of teeth and size can be changed to values not specified in the dimension table.
6.Ring of angle	Please refer to the specification table or outline dimensional drawing.(Catalog: P31）*Angle can be changed to values not specified in the dimension table.

Circular Arc Ring Connection Jig

RJ	1
1610B	2
C
140	3

1.Product Name	RJ Series *Multiple rings are required when using a circular arc ring around the entire circumference.
2.Frame number	1610B,2510B,3212B,4012B
3.Number of tooth	Please match with the number of teeth on the circular arc ring you are using.

Specifications

Model
Roller Pinion	Circular Arc Rings

Common spec.			Circular arc ring spec.								Roller pinion spec.			Outline Drawing
Reduction ratio	Diameter of pitch circle		Number of tooth *1	Basic dynamic rated torque (N･m)	Maximum working torque (N･m)	Allowable static rated torque (N･m)	Inertia moment *2		Mass weight *2		Number of tooth	Inertia moment (x10^-4 kg･m²)	Mass weight (kg)	Rooller pinion / Circular arc ring	Connection Jig
	Cam ring	Roller Pinion					x10^-4 kg･m²		kg
	Cam ring	Roller Pinion					K1	K2	K1	K2

CPA1610B	RGD1610A





CPA2510B	RGD2510A





CPA3212B	RGD3212A





CPC3212A	RDC3212A





CPC4012B	RDC4012A

14	690.667	49.333	140	345	585	690	1562	779	1.5	0.73	10	3.93	0.71	PDF	PDF	CAD	PDF	PDF
20	971.429	48.571	200	485	825	970	6048	3019	2.9	1.5
24	1163.520	48.480	240	580	990	1160	9046	4516	3.0	1.5
30	1455.484	48.516	300	725	1230	1450	11039	5508	2.3	1.2
40	1941.463	48.537	400	970	1650	1940	28442	14199	3.3	1.7
9	694.800	77.200	90	760	1080	1520	2667	1331	2.5	1.3	10	25.5	2.1	PDF	PDF
12.5	959.259	76.741	125	1050	1510	2100	8539	4441	4.1	2.2
15	1153.125	76.875	150	1260	1810	2520	13125	6825	4.3	2.3
19	1459.200	76.800	190	1600	2280	3200	18428	9702	3.8	2.0
25	1923.077	76.923	250	2110	3020	4220	38492	20017	4.4	2.3
6.25	732.759	117.241	75	1310	2410	2620	5334	2863	4.7	2.5	12	169	6.4	PDF	PDF
25/3	973.214	116.786	100	1750	3200	3500	12641	6311	6.0	3.0
10	1172.727	117.273	120	2110	3870	4220	20498	10233	6.6	3.3
12.5	1462.963	117.037	150	2630	4810	5260	23907	12812	4.9	2.6
50/3	1954.717	117.283	200	3510	6430	7020	65996	32947	7.4	3.7
6.25	732.759	117.241	75	2150	3800	7200	5344	－	4.7	－	12	169	6.4	PDF	PDF
25/3	973.214	116.786	100	2900	5100	9600	12641	–	6.0	–
10	1172.727	117.273	120	3500	6100	11500	20498	–	6.6	–
12.5	1462.963	117.037	150	4350	7600	14500	23907	–	4.9	–
50/3	1954.717	117.283	200	5800	10000	19000	65996	–	7.4	–
5	736.667	147.333	60	5500	6600	9500	7071	–	6.1	–	12	594	12.4	PDF	PDF
20/3	987.826	148.174	80	7400	8800	12500	18890	–	8.8	–
8	1182.222	147.778	96	8800	10500	15000	28588	–	9.1	–
10	1476.364	147.636	120	11000	13000	18500	34685	–	7.0	–
40/3	1962.791	147.209	160	14500	17500	25000	89584	–	10	–

*1 This is number of tooth in case with used as a full ring.

*2 The number of inertia moment and mass weight are for a piece of a circular arc ring.

TCG (Trochoid Cam Gear) Line-up

TCG Runner,
CRA&CPA / CRC&CPC series

Frame number

CRA&CPA:1010,210,1610,2010,2510,3212

CRC&CPC:3212,4012

Maximum working load（N）

CRA&CPA:250 - 6600

CRC&CPC:10500 - 18000

TCG Runner Stainless-steel type,
CRS&CPS series

Frame number

CRS&CPS：1610,2010,2510,3212,4012

Maximum working load（N）

CRS&CPS：1700-9000

Precision Ball Reducers
for TCG Series 1210-2510, SFP Series

Frame number

70,85,100,125

Reduction ratio

8 - 50

Acceleration peak torque（N･m）

9.5 - 123.4

Precision Differential Reducers
for TCG Series 3212-4012, NSP Series

Frame number

70,85,100,125

Reduction ratio

8-50

Acceleration peak torque（N･m）

9.5-123.4

TCG Ring(Full Ring),
RGF&CPA / RFC&CPC series

Frame number

RGF&CPA:1010,1210,1610,2510,3212

RFC&CPC:3212,4012

Maximum working torque（N･m）

RGF&CPA:11 - 1930

RFC&CPC:1800 - 5300

TCG Ring Internal-gear type
(Full Ring),UGF&CPA/UFC&CPC Series

Frame number

UGF＆CPA:1610,2510,3212

UFC＆CPC:3212,4012

Maximum working torque（N･m）

UGF＆CPA:245-1550

UFC＆CPC:2460-3990

TCG Ring Internal-gear type
(Circular Arc Ring),UGD&CPA/UDC&CPC series

Frame number

UGD＆CPA:1610,2510,3212

UDC＆CPC:3212,4012

Maximum working torque（N･m）

UGD＆CPA:535-9600

UDC＆CPC:6910-32000

Full Ring Unit
RGU series

Frame number

1610,2510

Reduction ratio

40 - 625

Maximum working torque（N･m）

143 - 1496

Circular Arc Ring Unit
RGU series

Frame number

1610,2510

Reduction ratio

150 - 1200

Maximum working torque（N･m）

945 - 2270

Series List

TCG Ring(Circular Arc Ring), RGD&CPA / RDC&CPC series

Highlights

Zero-Backlash

Circular Arc Rings and Large Diameter

High Accuracy

Low noise, Low vibration

Low dust

No need for applying the lubricant

Model

Roller Pinion

Circular Arc Rings

Circular Arc Ring Connection Jig

Specifications

Applications

Large Scale Processing Machines

TCG (Trochoid Cam Gear) Line-up

Please feel free to contact us for product information and technical consultation.