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Circular Arc Ring & Roller Pinion RGD&CPA / RDC&CPC series

<span>Circular Arc Ring & Roller Pinion <br>RGD&CPA / RDC&CPC series</span>

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

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.

  • No need to maintenance for Lubricating grease

    TCG series is Maintenance-free untill the rated life is achieved by applying grease only for the first time.
    *Proven by our evaluation test.
    (Please note that the grease life is affected by various conditions such as the usage environment.)

  • 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.

Model

Roller Pinion

CPA
1
1610B
2
1
3
A
4
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

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: P25, 27）*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: P25, 27）*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 CAD Data Catalog Instruction
Manual
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
(×10-4kg・㎡)		 Mass weight
(kg)		 Rooller pinion /
Circular arc ring		 Connection Jig
Cam ring Roller Pinion ×10-4kg・㎡ kg
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.

Applications

Large Scale Processing Machines
List of Applications

TCG (Trochoid Cam Gear) Line-up

Series List

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

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