Disc Bobbins - CP2494 Type
The "Float in disc" range of bobbins has been improved and rationalised.
The most obvious changes are the new part numbers, an identification letter marked on the bobbin to identify the length and the removal of the flats on the bobbin head. The head flange thickness has also been increased from 2.0mm to 2.5mm, and the parts will be manufactured from a tougher and more durable material. The new part numbers are the same as the old part numbers but with a suffix added so they are easily recognisable.
CP2494-1341MD & CP2494-1342MM "Float in the Disc" have been added to the range.
CP2494-594 bobbin has been made obsolete, use CP2494-593MB.
Bobbins are also available in kit form. Kit comprises 12 x CP2494-117 nut, 12 x CP2494-118 washer, 12 x CP3845-100, -101 or -102 6Lobe bolts and 12 x relevant bobbin. (see table).
Special Note:
- 'S' suffix on the end of bobbin kit part number denotes shorter (0.875) CP3845-100 bolt included.
- 'L' suffix on the end of bobbin kit part number denotes longer (1.062) CP3845-102 bolt included.
| "Float in the Disc" Bobbins | ||||||
| Old Part Number |
New Part Number |
Letter ID |
Dimension 'L' |
Disc Flange Thickness |
Nominal Float |
Bobbin Kit |
| CP2494- 595 |
CP2494- 595MA |
A | 4.7/4.75mm | 4.3/4.35mm | 0.4mm | CP2494- 595K08S or -595K12 |
| CP2494- 593 |
CP2494- 593MB |
B | 5.2/5.25mm | 4.8/4.85mm | 0.4mm | CP2494- 593K12 |
| CP2494- 592 |
CP2494- 592MC |
C | 5.4/5.45mm | 5.0/5.05mm | 0.4mm | CP2494- 592K12 |
| N/A | CP2494- 1341MD |
D | 5.8/5.85mm | 5.6/5.65mm | 0.2mm | CP2494- 1341K12 |
| CP2494- 591 |
CP2494- 591MH |
H | 5.9/5.95mm | 5.5/5.55mm | 0.4mm | CP2494- 591K12 |
| CP2494- 589 |
CP2494- 589MJ |
J | 6.0/6.05mm | 5.6/5.65mm | 0.4mm | CP2494- 589K12 or K12L |
| CP2494- 626 |
CP2494- 626ML |
L | 6.3/6.35mm | 5.6/5.65mm | 0.7mm | CP2494- 626K12 |
| N/A | CP2494- 1342MN |
M | 6.5/6.55mm | 6.3/6.35mm | 0.2mm | CP2494- 1342K12 |
| CP2494- 504 |
CP2494- 504MP |
P | 6.7/6.75mm | 6.3/6.35mm | 0.4mm | CP2494- 504K12 or K12L |
Download "Float In Disc" Installation Drawing:
CP2494-2000CD
Float in the Bell Mounting
The Float in the bell bobbins are shown in the table below. Kits contain bobbins, bolts, nuts x 12 & washers x 24.
| Part Number | Bell Flange Thickness | Dimension 'L' | Nominal Float | Kit Part Number |
| CP4015-101MA | 8.05/8.00mm | 8.25/8.20mm | 0.25/0.15mm | CP2494-29 |
| CP4015-106MB | N/A | 8.05/8.00mm | N/A | N/A |
| CP4015-107MC | N/A | 7.95/7.90mm | N/A | N/A |
Download:- "Float In The Bell" Installation Drawing: CP2494-2020CD
Note: Disc mounting tightening torque - 14Nm (10.5lb/ft)